OSTEOPOROSIS
Outlines
what is Osteoporosis?
is a chronic, progressive disease of multifactorial etiology and it is
the most common bone Metabolic disease in humans.
Characterized by:
◦ Low bone mass
◦ Microarchitectural deterioration
◦ Compromised bone strength
◦ Increased risk for fracture
◦ normal minarlization
◦ “Silent disease” until complicated by fractures
Epidemiology
incidence
Globally, osteoporosis is by far the most common metabolic bone disease, estimated to
affect over 200 million people worldwide.
1.5 million osteoporotic fractures occur each year:
700,000 are vertebral fractures
300,000 are hip fractures
200,000 are wrist fracture
-The risk for osteoporosis increases with age as BMD declines. Senile osteoporosis is most
common in persons aged 70 years or older.
-Secondary osteoporosis, however, can occur in persons of any age.
-male: female ratio is 1:4 postmenopausal woman
-Men have a higher prevalence of secondary osteoporosis, with an estimated 45-60% of cases
being a consequence of hypogonadism, alcoholism, or glucocorticoid excess.
-Osteoporosis can occur in persons of all races and ethnicities. In general, however, whites
(especially of northern European descent) and Asians are at increased risk .
Nonmodifiable risk factors include the following:
- Personal history of fracture as an adult
- History of fracture in a first-degree relative
- White race
- Advanced age?
- Female sex
- Poor health or fragility
24 September 2021
Cont…
Potentially modifiable risk factors include the following:
- Current cigarette smoking
- Low body weight (< 127 lb)
- Estrogen deficiency such as that caused by early menopause (age <
45 years) or - - bilateral ovariectomy and prolonged premenopausal
amenorrhea (>1 year)
- Low lifelong calcium intake
- Alcoholism
- Inadequate physical activity
- Poor health or frailty
24 September 2021
Risk Factors
Major
History of fracture as an adult
Fragility fracture in first degree
relative
Caucasian/Asian
postmenopausal woman
Low body weight
Current smoking
Use of oral corticosteroids >
3mo.
Additional
Estrogen deficiency at early age
(< 45 YO)
Poor health/frailty
Recent falls
Low calcium intake (lifelong)
Low physical activity
> 2 alcoholic drinks per day
Medical Conditions Associated with Increased
Risk of Osteoporosis
COPD
Cushing’s syndrome
Eating disorders
Hyperparathyroidism
Hypophosphatasia
IBS
RA, other autoimmune
connective tissue disorders
Insulin dependent diabetes
Multiple sclerosis
Multiple myeloma
Stroke (CVA)
Thyrotoxicosis
Vitamin D deficiency
Liver diseases
Not an inclusive list
Drugs Associated with
Reduced Bone Mass
Aluminum
Anticonvulsants
Cytotoxic drugs
Glucocorticosteroids
(oral/high dose inhaled)
Immunosuppresants
Gonadotropin-releasing
hormone (e.g. Lupron)
Lithium
Heparin (chronic use)
Supraphysiologic thyroxine
doses
Aromatase inhibitors
Depo-Provera
Not an inclusive list
POSTMENOPAUSAL OSTEOPOROSIS
Osteoporosis in men !?
Osteoporosis in men
risk factor !?
Juvenile osteoporosis
A potentially useful mnemonic for osteoporotic risk factors
is OSTEOPOROSIS, as follows:
LOw calcium intake
Seizure meds (anticonvulsants)
Thin build
Ethanol intake
HypOgonadism
Previous fracture
ThyrOid excess
Race(white, Asian)
Other relatives with osteoporosis
Steroids
Inactivity
Smoking
•age bracket
•wrist fractures occur most commonly at age 50-60 years
•vertebral fractures occur most commonly at age 60-70
years
Bone undergoes both radial and longitudinal growth and is continually
remodeled throughout our lives in response to microtrauma. Bone remodeling
renews bone strength and mineral, preventing the accumulation of damaged
bone.
Bone remodeling occurs at discrete sites within the skeleton and proceeds in
an orderly fashion, and bone resorption is always followed by bone formation,
a phenomenon referred to as coupling.
‫توضيحية‬ ‫فيديوهات‬
Alterations in bone formation and resorption
Estrogen deficiency
Calcium, vitamin D, and PTH help maintain bone homeostasis.
Insufficient dietary calcium or impaired intestinal absorption of calcium
due to aging or disease can lead to secondary hyperparathyroidism.
PTH is secreted in response to low serum calcium levels. It increases
calcium resorption from bone decreases renal calcium excretion, and
increases renal production of 1,25-dihydroxyvitamin D (1,25[OH]2 D)—
an active hormonal form of vitamin D that optimizes calcium and
phosphorus absorption, inhibits PTH synthesis, and plays a minor role
in bone resorption.
Classification of osteoporosis:
Primary osteoporosis
Secondary osteoporosis
Type of Primary Osteoporosis Characteristics
Juvenile osteoporosis
Usually occurs in children or young
adults of both sexes
Normal gonadal function
Age of onset: usually 8-14 years
Hallmark characteristic: abrupt bone
pain and/or a fracture following trauma.
Idiopathic osteoporosis
Postmenopausal osteoporosis
(type I osteoporosis)
Occurs in women with estrogen
deficiency
Characterized by a phase of accelerated
bone loss, primarily from trabecular
bone Fractures of the distal forearm and
vertebral bodies common.
Age-associated or senile
osteoporosis (type II osteoporosis)
Occurs in women and men as BMD
gradually declines with aging
Represents bone loss associated with
aging Fractures occur in cortical and
trabecular bone Wrist, vertebral, and hip
fractures often seen
primary osteoporosis
Secondary osteoporosis
Secondary osteoporosis occurs when an underlying disease, deficiency, or drug
causes osteoporosis
Cause Examples
Genetic/congenital
Renal hypercalciuria – one of the most important secondary causes
of osteoporosis; can be treated with thiazide diuretics
Cystic fibrosis
Ehlers-Danlos syndrome
Glycogen storage disease
Gaucher disease
Marfan syndrome
Menkes steely hair syndrome
Riley-Day syndrome
Osteogenesis imperfecta
Hemochromatosis
Homocystinuria
Idiopathic hypercalciuria
Hypogonadal states
Hypogonadal
states
Androgen insensitivity
Anorexia nervosa/bulimia nervosa
Female athlete triad
Hyperprolactinemia
Panhypopituitarism
Premature menopause
Turner syndrome
Klinefelter syndrom
endocrine
disorders
Cushing syndrome
Diabetes mellitus
Acromegaly
Adrenal insufficiency
Estrogen deficiency
Growth hormone deficiency
Hypercortisolism
Hyperparathyroidism
Hyperthyroidism
Hypogonadism
Hypophosphatasia
Pregnancy
Porphyria
Prolactinoma
Deficiency states
and malabsorption
syndromes
Alcoholism
Anorexia nervosa
Calcium deficiency
Magnesium deficiency
Protein deficiency
Vitamin D deficiency [56, 57]
Bariatric surgery
Celiac disease
Cystic fibrosis
Gastrectomy
Malnutrition
Parenteral nutrition
Chronic liver disease
Inflammatory
diseases
Inflammatory bowel disease/Crohn disease
Ankylosing spondylitis
Rheumatoid arthritis
Systemic lupus erythematosus
Hematologic and
neoplastic
disorders
Hemochromatosis
Hemophilia
Leukemia
Lymphoma
Multiple myeloma
Sickle cell anemia
Systemic mastocytosis
Thalassemia
Metastatic disease
Medications
Anticonvulsants
Antipsychotic drugs
Antiretroviral drugs
Aromatase inhibitors
Chemotherapeutic/transplant drugs: cyclosporine, tacrolimus,
platinum compounds, cyclophosphamide, ifosfamide, high-dose
methotrexate [58]
Furosemide
Glucocorticoids and corticotropin [59] : prednisone (≥5 mg/day for ≥3
mo) [60]
Heparin (long term)
Hormonal/endocrine therapies: gonadotropin-releasing hormone
(GnRH) agonists, luteinizing hormone-releasing hormone (
HOW the patients will come to
you?
1- A woman at or near the menopause develops back
pain and increased thoracic kyphosis; she, or someone
in the family, may have noticed that her height has
diminished .(This is the typical picture) .
2-low-energy fracture of the distal radius (Colles’ fracture), the hip or the ankl .
3-in routine DXA screening it is usually reserved for
women with multiple risk factors and particularly those
with suspected oestrogen deficiency .
Fracture is the main complain.
History:
Keep in mind that osteoporosis occurs in many people who have few or no risk factors for this
condition. Often, patients who have not sustained a fracture do not report symptoms that
would alert the clinician to suspect a diagnosis of osteoporosis; thus, this disease is a "silent
thief" that generally does not become clinically apparent until a fracture occurs.
So the history should focus in:
- Age (> 50 years), sex (female), and race (white or Asian)
- Family history of osteoporosis, particularly maternal history of fractures.
- Reproductive factors, especially regarding early menopause and estrogen replacement
therapy.
- ypogonadal states: men with hypogonadism secondary to any genetic or other conditions
are at higher risk.
24 September 2021 by nadeer alassadi
Osteoporosis Clinical Presentation
Cont…
- Smoking: smokers are at higher risk
- Alcohol consumption
- Low levels of physical activity: immobility increases the risk [65] ; spinal
cord injury and stroke cause physical impairment and are common causes
of immobility.
- Strenuous exercise that results in amenorrhea (such as that which occurs
in marathon runners)
- Calcium and vitamin D intake
- History of low-trauma "fragility" fracture in patients aged 40 years or
older.
-Coexisting medical conditions associated with bone
loss:hyperparathyroidism, hypogonadism, leukemia, rheumatoid arthritis,
celiac disease, and Cushing syndrome.
- Medications associated with bone loss: examples are glucocorticoids,
cyclosporine,anticonvulsant.
24 September 2021 by nader al_ assadi
Physical Examination
Patients with suspected osteoporosis should undergo a
comprehensive physical examination.
•The physical examination should begin with an inspection of the patient. Height
measurement with a stadiometer at each visit may be useful.
• Examination of active and passive range of motion (ROM) assists in determining
whether spine, hip, wrist, or other osseous pathology may be present.
•Athorough neurologic examination is essential to rule out spinal cord and/or
peripheral nerve compromise.
•Sign of fracture (eg:Patients with vertebral compression fractures may have point
tenderness over the involved vertebrae and demonstrate a thoracic kyphosis with
an exaggerated cervical lordosis.
•signs of collagen defects : Patients with osteoporosis may have physical findings
consistent with subtle collagen defects. These include a short fifth digit,
hyperlaxity, hearing loss.
•Balance difficulties :Patients with osteoporosis are known to have decreased
balance, possibly secondary to differences in balance control strategies and sway
amplitude. Patients may have difficulty performing tandem gait and performing
single limb stance. Poor balance may be noted particularly in patients with severe
kyphosis resulting from vertebral compression fractures because their altered
center of gravity makes ambulation with a stable base of support difficult for them.
lap
- 25 hydroxyvitamin D level - low 25 hydroxy cholecalciferol levels (25 hydroxy vit D) in patients sustaining low energy.
- --Serum calcium, phosphates and
-alkaline phosphatase .
-Total plasma proteins and plasma albumin -
.Collagen cross link polyptide .
-IMAGE
Radiographs
indications
• suspicion of fracture
• loss of height
• pain in thoracic or lumbar spine
• recommended views
• lateral spine radiograph
• AP pelvis or hip
• findings
• thinned cortices
• loss of trabecular bone
• kyphosis
• codfish vertebra
Radiographic findings can suggest the presence of osteopenia, or bone loss, but
cannot be used to diagnose osteoporosis. Osteopenia is suggested by a cortical width
that is less than the medullary width. Radiographs may also show fractures.
Plain radiography is not as accurate as BMD testing. Because osteoporosis
predominantly affects trabecular bone rather than cortical bone, radiography does
not reveal osteoporotic changes until they affect the cortical bone. Cortical bone is
not affected by osteoporosis until more than 30% of bone loss has occurred.
Approximately 30-80% of bone mineral must be lost before radiographic lucency
becomes apparent on radiographs. Thus, plain radiography is an insensitive tool for
diagnosing osteoporosis.
1-Plain x ray
Singh's index
Singh's index
2dual-energy x-ray absorptiometry (DXA
dual-energy x-ray absorptiometry (DXA
The 2020 update of the American Association of Clinical
Endocrinologists (AACE) guidelines provides the following
criteria for the diagnosis of osteoporosis in postmenopausal
women :
1-
Quantitative Computed
Tomography
QCT scanning of the spine is the most sensitive method for
diagnosing osteoporosis, because it measures trabecular
bone within the vertebral bon.
1- QCT is a very sensitive technique when repeated
measurements are needed to detect small changes in
BMD,
2- modern three-dimensional (3D) QCT acquisition has a
scan time less than 10 seconds for the lumbar spine or
proximal femur.
3- and there is no interference by osteophytes.
Single-photon emission computed
tomography (SPECT)
represents a tomographic (CT-like) bone imaging
technique that offer:
1- better image contrast
2- more accurate lesion localization than planar bone
scanning.
3- PECT scanning is helpful when accurate localization of
skeletal lesions within large and/or anatomically complex
bony structures is required.(no bone overlap)
Quantitative Ultrasonography
Quantitative ultrasonography (QUS) of the calcaneus is a low-cost
portable screening tool. It has the advantage of not involving
radiation, but it is not as accurate as other imaging methods.
Ultrasonography cannot be used for monitoring skeletal changes over
time, nor can it be used to monitor the response to treatment,
because of its lack of precision.
Magnetic Resonance Imaging
These osteoporotic fractures demonstrate characteristic changes in
the bone marrow that distinguish them from other uninvolved parts of
the skeleton and the adjacent vertebra.
Bone Scanning
one scans assesses the function and tissue metabolism of organs by
using a radionuclide (technetium-99m [99m Tc]) that emits radiation in
proportion to its attachment to a target structure.
This technique detects an increase in osteoblastic activity (as seen in
compression fractures.
Bone Biopsy and Histologic Features.
Bone biopsy can help to exclude underlying pathologic conditions,
such as mastocytosis, that may be responsible for presumed
osteoporotic fracture. Typically, iliac crest biopsy is performed either
in the minor procedure suite or in the operating room.
Histologic examination of osteoporotic bone may reveal generalized
thinning of trabeculae and irregular perforation of trabeculae,
reflecting unbalanced osteoclast-mediated bone resorption.
.
The principle objectives of treatment are :
- alleviation of pain .
- prevention of fracture .



Regular Weight-Bearing Exercise
Defined as those in which bones and muscles work
against gravity as feet and legs bear the body’s weight
-Include walking, stair climbing, dancing, tennis, yoga.
-Improve agility, strength, balance.
-May increase bone density modestly, reduce fall risk,
enhance muscle strength, improve balance.
Avoidance of Tobacco and Alcohol
Tobacco products detrimental to skeleton, overall health
.NOF National Osteoporosis Foundation (strongly
encourages tobacco cessation programs as osteoporosis
intervention) .
Avoidance of Tobacco and Alcohol
Excessive alcohol
intake also
detrimental to
bone health and
requires
treatment.
Adequate Intake of Calcium/Vitamin D
Adequate intakes of dietary calcium and vitamin D,
including supplements if necessary
◦ Elemental calcium per day at least 1200 -1500 mg.
◦ Vitamin D3 per day 800 -1000 international units (IU).
Vitamin D3 (cholecalciferol) plays major role in Ca
absorption Controlled clinical trials have demonstrated
the combination reduces fracture risk Inexpensive, well-
tolerated.
Calcium/D Product Selection
Product (% elemental
Ca)
Elemental
Calcium
(mg)
Vitamin
D (units)
Comments
Calcium carbonate
(40)
-Tums Ultra
-Caltrate 600 Plus
-Oscal Plus D
-Viactiv Chews
400
600
500
500
200
125
100
Requires acidic environment for dissolution and
disintegration. Best to take with meals.
Greater risk for constipation with carbonate
form.
Calcium citrate (24)
-Citracal Plus D
- Citracal Petites with
VitD
315
200
200
200
Take without regard to meals. Serving size
usually equals 2 capsules so label can be
misleading to patients.
Vitamin D
-Multivitamin (D3)
-Vitamin D
120-450 400
100-400
Vitamin D and Fall Risk
In addition to its effect on BMD, may contribute to reduction in fracture risk
◦ Improved muscle function(o+R+c)
◦ Reduction in risk for falls
Vitamin D deficiency prevalent in older adult population
◦ Inadequate sun exposure, use of sunscreen
◦ Homebound, institutionalized
◦ Maintain 25-hydroxyvitamin D3 at least > 40 ng/mL
◦ Treatment: 50,000 IU vitD weekly x 6-8 weeks, then assess need for chronic
monthly therapy
High protein diet
.
Pharmacological treatment
Who Should Be Treated?
NOF Recommendations – 2008
Initiate therapy to reduce fractures in
postmenopausal women/men > 50 with:
1. BMD T-scores < -2.5 at hip or spine
2. Prior vertebral or hip fracture
3. Low bone mass (T-scores -1.0 to -2.5 at hip or spine) when:
– 10-year probability of hip fracture is > 3%
– 10-year probability of major osteoporosis-related fracture is > 20%
– Based on US-adapted WHO algorithm
www.nof.org
FDA-Approved Drugs for Osteoporosis
Bisphosphonates
◦ Alendronate, Alendronate plus
D (Fosamax®
, Fosamax Plus D®
)
◦ Risedronate, Risedronate with
Calcium (Actonel®
)
◦ Ibandronate (Boniva®
)
Selective Estrogen Receptor
Modulators (SERMs)
◦ Raloxifene (Evista®
)
Calcitonin (Miacalcin®
,
Fortical®
, Calcimar®
)
Parathyroid Hormone [PTH
(1-34), teriparatide]
◦ Forteo®
Estrogen/Hormone Therapy
(ET/HT)
◦ Premarin®
, Estrace®
, Prempro®
Bisphosphonates – Antiresorptive Agents
Agents FDA-approved for:
◦ Prevention and treatment of osteoporosis in postmenopausal women
◦ Treatment to increase bone mass in men with osteoporosis
◦ Treatment of glucocorticoid-induced osteoporosis in men and women
receiving glucocorticoids
◦ Treatment of Paget’s disease of bone in men and women
Mechanism: inhibits bone resorption by attaching to bony surfaces
undergoing active resorption and inhibiting action of osteoclasts
◦ Leads to increases in bone density and reduced fracture risk
Bisphosphonates
Very well tolerated in patients who adhere to proper
administration techniques
Proper patient counseling for correct administration is
KEY to reduce risk of adverse effects and increase
tolerability
Place in Therapy: should be considered first-line for
prevention/treatment of osteoporosis in patients with
no contraindications.
Bisphosphonates – Clinical
Efficacy
Controlled clinical trials indicate over 3-4 year period, alendronate ↑ bone mass
and ↓ incidence of vertebral, hip, and all non-vertebral fractures by 50%
Controlled clinical trials indicate risedronate ↑ bone mass and ↓ risk of
vertebral fractures by 40% and non-vertebral fractures by 30% over 3-year
period
Ibandronate has been shown in controlled clinical trials to ↑ BMD and reduce
the risk of vertebral fracture by 50% over 3-year period
Alendronate appears to be well tolerated and effective for at least ten years
Zolendronic Acid (Reclast®)
Approved for treatment of osteoporosis in postmenopausal
women in August 2007
Single 5 mg infusion given IV over > 15 minutes, once yearly
Should still supplement with calcium/vitamin D
May be ideal for those with GI contraindications to the oral
formulations.
SERMs – Raloxifene
FDA-approved for:
◦ Prevention and treatment of osteoporosis in postmenopausal women
Mechanism: tissue-selective activity, acts as an estrogen agonist on bone
◦ Estrogen antagonist on breast, uterus.
Raloxifene
Place in Therapy: considered first-line in women who
cannot tolerate bisphosphonates and have no
contraindications to therapy.
Combination therapy (usually a bisphosphonate with a
non-bisphosphonate) can provide additional small
increases in BMD when compared to monotherapy.
Impact of combination therapy on fracture rate unknown
Estrogen/Hormone Therapy
(ET/HT)
FDA approved for:
◦ Prevent osteoporosis
◦ Treatment of moderate/severe vasomotor symptoms of
menopause
◦ Treatment of moderate/severe symptoms of vulvar and vaginal
atrophy associated with menopause
◦ Consider topical preparations to treat vaginal symptoms rather
than oral ET/HT
FDA Recommendations –
ET/HT
When prescribing medications for osteoporosis,
physicians should consider all non-estrogen therapies
first.
When prescribing ET/HT, use smallest dose for shortest
amount of time to achieve treatment goals.
Prescribe ET/HT products only when benefits believed to
outweigh risks for a specific patient.
Calcitonin
FDA-approved for:
◦ Treatment of osteoporosis in women who are > 5 years
postmenopausal
◦ Treatment of Paget’s disease of bone.
◦ Adjunctive therapy for hypercalcemia.
Mechanism:
◦ Peptide composed of 32 amino acids which binds to
osteoclasts and inhibits bone resorption .
◦ Promotes the renal excretion of calcium, phosphate, sodium,
magnesium and potassium by decreasing tubular reabsorption.
Calcitonin – Clinical Efficacy
Has been shown to increase spinal bone mass and may
decrease risk of vertebral fracture .
Conflicting data on efficacy of calcitonin at sites other
than the spine.
Less effective than bisphosphonates in treatment of
osteoporosis.
Beneficial, short-term effect on acute bone pain after
osteoporotic fracture (vertebral).
Calcitonin
Valid option for treatment of established osteoporosis,
especially when accompanied by fracture pain
Place in therapy: because of cost, adverse effects,
inconvenience of nasal administration, recommend using
calcitonin until pain is no longer a problem and then
switching to a bisphosphonate for long-term therapy
Parathyroid Hormone [PTH (1-34)]
Anabolic agent
FDA-approved for:
◦ Treatment of osteoporosis in postmenopausal women at high risk for
fracture
◦ previous osteoporotic fracture, multiple risk factors for fracture, extremely low
BMD (< -2.5), or failed/intolerant to previous treatment
◦ Treatment of primary or hypogonadal osteoporosis in men at high risk of
fracture
Mechanism: recombinant formulation of endogenous
parathyroid hormone (PTH)
◦ stimulates osteoblast function, increases gastrointestinal calcium
absorption, increases renal tubular reabsorption of calcium
◦ Enhances bone turnover by initiating greater bone formation
Guidelines from the American Association of Clinical Endocrinologists
(AACE), updated in 2020, include the following recommendations for
choosing drugs to treat osteoporosis in postmenopausal women :
- First-line agents for most high fracture risk patients: alendronate,
risedronate, zoledronate,Denosumab.
- First-line agents for high fracture risk patients unable to use oral
therapy: abaloparatide, denosumab, romosozumab, teriparatide, and
zoledronate.
- First-line agents for spine-specific indications in select patients:
ibandronate and raloxifene
- Sequential agents: anabolic agents (eg, abaloparatide,
romosozumab, teriparatide) should be followed with a bisphosphonate
or denosumab.
Combination therapy with two or more agents has not been shown to
have a greater effect on fracture reduction than single therapy .
Approaches to Monitoring Therapy
Always important to ask patients about adherence, encourage
continuation of therapies to reduce fracture risk
Monitoring of therapy should be considered, as up to 1/6 of
women taking effective therapies continue to lose bone, especially
if they smoke
May measure bone mineral density at a single site after one year
of therapy, but results may be misleading; usually done every 2
years
Drugs may decrease a patient’s risk for fracture even when there is
no apparent increase in BMD.
Bracing: Prophylactic bracing of the spine by
using an brace or Taylor brace may be useful in prevention of
pathological fractures in a severely osteoporotic spine .
Complication of osteoporosis
1-vertebral compression fractures often occur with minimal stress, such as
coughing, lifting, or bending.
2- Hip fractures are the most devastating and occur most commonly at the femoral
neck and intertrochanteric regions . Hip fractures are associated with falls. The
likelihood of sustaining a hip fracture during a fall is related to the direction of the
fall. Fractures are more likely to occur in falls to the side because less subcutaneous
tissue is available to dissipate the impact.
3-Fractures can cause further complications, including chronic pain from vertebral
compression fractures and increased morbidity and mortality secondary to
vertebral compression fractures and hip fracture. They are also at risk for the
complications associated with immobility, including deep vein thrombosis (DVT)
and pressure ulcers. Respiratory compromise can occur in patients with multiple
vertebral fractures that result in severe kyphosis.
4- patients with osteoporosis develop spinal deformities and a dowager's hump,
and they may lose 1-2 inches of height by their seventh decade of life. These
patients can lose their self-esteem and are at increased risk for depression.
Prevention of Osteoporosis
primary prevention of osteoporosis starts in childhood. Patients require adequate
calcium intake, vitamin D intake, and weight-bearing exercis .
beyond this, prevention of osteoporosis has two:
behavior modification
Patients should be counseled on :
1- smoking cessation
2- moderation(stop) of alcohol intake.
3- Regular weight-bearing exercise and back extensor strengthening
help delay bone loss.
4- sunbath 15 minute
pharmacologic interventions
1- calcium supplementation and
2-administration of raloxifene or
3-bisphosphonates (alendronate or risedronate).
*Bisphosphonates should be considered as first-line agents for the
prevention of osteoporosis.
Osteoporosis Osteomalacia
Definition Reduced bone mass, normal mineralization Bone mass variable, reduced mineralization
Age Post menopausal (Type I) or elderly (Type II) Any age
Etiology
Endocrine abnormality, age, idiopathic,
inactivity, alcohol, calcium deficiency
Vit D deficiency or abnormal vit D pathway,
hypophosphatemia, hypophosphatasia,
renal tubular acidosis
Symptoms and
signs
Pain and tenderness at fracture site Generalized bone pain and tenderness
Xray Axial fracture predominance
Appendicular fracture predominance,
symmetric, includes pseudofractures (Looser
zones)
Serum Ca Normal Low or normal
Serum PO4 Normal Low or normal
ALP Normal Elevated (except hypophosphatasia)
Urinary Ca High or normal Normal or low (high in hypophosphatasia)
Bone biopsy Tetracycline labeling normal Tetracycline labeling abnormal
DONT FORGIT !
References
1) American Association of Clinical Endocrinologists medical guidelines
for clinical practice for the prevention and treatment of
postmenopausal osteoporosis: 2020 update. Endocr Pract.
May2020; 26(Suppl 1):1-46. (2) Kelman A, Lane NE. The management of
secondary osteoporosis. Best Pract Res Clin
Rheumatol. Dec 2005;19(6):1021-37.
MEDSCape Author: Rachel Elizabeth Whitaker Elam, MD, MSc; Chief
Editor: Herbert S Diamond, MD
References
Actonel®
Prescribing Information (www.actonel.com)
Ann Intern Med 1990;112:352
Ann Intern Med 2006;144:753
Boniva®
Prescribing Information (www.boniva.com)
Clinical Reviews in Bone and Mineral Metabolism 2004;2(4):291
Evista®
Prescribing Information (www.evista.com)
Forteo®
Prescribing Information (www.forteo.com)
Fortical®
Prescribing Information (www.fortical.com)
Fosamax®
Prescribing Information (www.fosamax.com)
References
JAMA 2004;291(16):1999
J Clin Densitom 2004;7(1):1-6
J Am Acad Orthop Surg 2006;14:347
Miacalcin®
Prescribing Information (www.miacalcin.com)
Reclast®
Prescribing Information (www.reclast.com)
National Osteoporosis Foundation (http://www.nof.org)
NEJM 2003;348:1187
NEJM 2004;350(12):1189-99
Osteoporosis Int 1998;8:1
osteoporosis.pdf

osteoporosis.pdf

  • 1.
  • 2.
  • 3.
    what is Osteoporosis? isa chronic, progressive disease of multifactorial etiology and it is the most common bone Metabolic disease in humans. Characterized by: ◦ Low bone mass ◦ Microarchitectural deterioration ◦ Compromised bone strength ◦ Increased risk for fracture ◦ normal minarlization ◦ “Silent disease” until complicated by fractures
  • 4.
    Epidemiology incidence Globally, osteoporosis isby far the most common metabolic bone disease, estimated to affect over 200 million people worldwide. 1.5 million osteoporotic fractures occur each year: 700,000 are vertebral fractures 300,000 are hip fractures 200,000 are wrist fracture -The risk for osteoporosis increases with age as BMD declines. Senile osteoporosis is most common in persons aged 70 years or older. -Secondary osteoporosis, however, can occur in persons of any age. -male: female ratio is 1:4 postmenopausal woman -Men have a higher prevalence of secondary osteoporosis, with an estimated 45-60% of cases being a consequence of hypogonadism, alcoholism, or glucocorticoid excess. -Osteoporosis can occur in persons of all races and ethnicities. In general, however, whites (especially of northern European descent) and Asians are at increased risk .
  • 6.
    Nonmodifiable risk factorsinclude the following: - Personal history of fracture as an adult - History of fracture in a first-degree relative - White race - Advanced age? - Female sex - Poor health or fragility 24 September 2021
  • 7.
    Cont… Potentially modifiable riskfactors include the following: - Current cigarette smoking - Low body weight (< 127 lb) - Estrogen deficiency such as that caused by early menopause (age < 45 years) or - - bilateral ovariectomy and prolonged premenopausal amenorrhea (>1 year) - Low lifelong calcium intake - Alcoholism - Inadequate physical activity - Poor health or frailty 24 September 2021
  • 8.
    Risk Factors Major History offracture as an adult Fragility fracture in first degree relative Caucasian/Asian postmenopausal woman Low body weight Current smoking Use of oral corticosteroids > 3mo. Additional Estrogen deficiency at early age (< 45 YO) Poor health/frailty Recent falls Low calcium intake (lifelong) Low physical activity > 2 alcoholic drinks per day
  • 9.
    Medical Conditions Associatedwith Increased Risk of Osteoporosis COPD Cushing’s syndrome Eating disorders Hyperparathyroidism Hypophosphatasia IBS RA, other autoimmune connective tissue disorders Insulin dependent diabetes Multiple sclerosis Multiple myeloma Stroke (CVA) Thyrotoxicosis Vitamin D deficiency Liver diseases Not an inclusive list
  • 10.
    Drugs Associated with ReducedBone Mass Aluminum Anticonvulsants Cytotoxic drugs Glucocorticosteroids (oral/high dose inhaled) Immunosuppresants Gonadotropin-releasing hormone (e.g. Lupron) Lithium Heparin (chronic use) Supraphysiologic thyroxine doses Aromatase inhibitors Depo-Provera Not an inclusive list
  • 11.
  • 12.
  • 13.
  • 14.
  • 17.
    A potentially usefulmnemonic for osteoporotic risk factors is OSTEOPOROSIS, as follows: LOw calcium intake Seizure meds (anticonvulsants) Thin build Ethanol intake HypOgonadism Previous fracture ThyrOid excess Race(white, Asian) Other relatives with osteoporosis Steroids Inactivity Smoking
  • 19.
    •age bracket •wrist fracturesoccur most commonly at age 50-60 years •vertebral fractures occur most commonly at age 60-70 years
  • 21.
    Bone undergoes bothradial and longitudinal growth and is continually remodeled throughout our lives in response to microtrauma. Bone remodeling renews bone strength and mineral, preventing the accumulation of damaged bone. Bone remodeling occurs at discrete sites within the skeleton and proceeds in an orderly fashion, and bone resorption is always followed by bone formation, a phenomenon referred to as coupling.
  • 24.
  • 25.
    Alterations in boneformation and resorption Estrogen deficiency
  • 26.
    Calcium, vitamin D,and PTH help maintain bone homeostasis. Insufficient dietary calcium or impaired intestinal absorption of calcium due to aging or disease can lead to secondary hyperparathyroidism. PTH is secreted in response to low serum calcium levels. It increases calcium resorption from bone decreases renal calcium excretion, and increases renal production of 1,25-dihydroxyvitamin D (1,25[OH]2 D)— an active hormonal form of vitamin D that optimizes calcium and phosphorus absorption, inhibits PTH synthesis, and plays a minor role in bone resorption.
  • 27.
    Classification of osteoporosis: Primaryosteoporosis Secondary osteoporosis
  • 28.
    Type of PrimaryOsteoporosis Characteristics Juvenile osteoporosis Usually occurs in children or young adults of both sexes Normal gonadal function Age of onset: usually 8-14 years Hallmark characteristic: abrupt bone pain and/or a fracture following trauma. Idiopathic osteoporosis Postmenopausal osteoporosis (type I osteoporosis) Occurs in women with estrogen deficiency Characterized by a phase of accelerated bone loss, primarily from trabecular bone Fractures of the distal forearm and vertebral bodies common. Age-associated or senile osteoporosis (type II osteoporosis) Occurs in women and men as BMD gradually declines with aging Represents bone loss associated with aging Fractures occur in cortical and trabecular bone Wrist, vertebral, and hip fractures often seen primary osteoporosis
  • 29.
    Secondary osteoporosis Secondary osteoporosisoccurs when an underlying disease, deficiency, or drug causes osteoporosis Cause Examples Genetic/congenital Renal hypercalciuria – one of the most important secondary causes of osteoporosis; can be treated with thiazide diuretics Cystic fibrosis Ehlers-Danlos syndrome Glycogen storage disease Gaucher disease Marfan syndrome Menkes steely hair syndrome Riley-Day syndrome Osteogenesis imperfecta Hemochromatosis Homocystinuria Idiopathic hypercalciuria Hypogonadal states Hypogonadal states Androgen insensitivity Anorexia nervosa/bulimia nervosa Female athlete triad Hyperprolactinemia Panhypopituitarism Premature menopause Turner syndrome Klinefelter syndrom
  • 30.
    endocrine disorders Cushing syndrome Diabetes mellitus Acromegaly Adrenalinsufficiency Estrogen deficiency Growth hormone deficiency Hypercortisolism Hyperparathyroidism Hyperthyroidism Hypogonadism Hypophosphatasia Pregnancy Porphyria Prolactinoma Deficiency states and malabsorption syndromes Alcoholism Anorexia nervosa Calcium deficiency Magnesium deficiency Protein deficiency Vitamin D deficiency [56, 57] Bariatric surgery Celiac disease Cystic fibrosis Gastrectomy Malnutrition Parenteral nutrition Chronic liver disease
  • 31.
    Inflammatory diseases Inflammatory bowel disease/Crohndisease Ankylosing spondylitis Rheumatoid arthritis Systemic lupus erythematosus Hematologic and neoplastic disorders Hemochromatosis Hemophilia Leukemia Lymphoma Multiple myeloma Sickle cell anemia Systemic mastocytosis Thalassemia Metastatic disease Medications Anticonvulsants Antipsychotic drugs Antiretroviral drugs Aromatase inhibitors Chemotherapeutic/transplant drugs: cyclosporine, tacrolimus, platinum compounds, cyclophosphamide, ifosfamide, high-dose methotrexate [58] Furosemide Glucocorticoids and corticotropin [59] : prednisone (≥5 mg/day for ≥3 mo) [60] Heparin (long term) Hormonal/endocrine therapies: gonadotropin-releasing hormone (GnRH) agonists, luteinizing hormone-releasing hormone (
  • 32.
    HOW the patientswill come to you? 1- A woman at or near the menopause develops back pain and increased thoracic kyphosis; she, or someone in the family, may have noticed that her height has diminished .(This is the typical picture) . 2-low-energy fracture of the distal radius (Colles’ fracture), the hip or the ankl . 3-in routine DXA screening it is usually reserved for women with multiple risk factors and particularly those with suspected oestrogen deficiency . Fracture is the main complain.
  • 33.
    History: Keep in mindthat osteoporosis occurs in many people who have few or no risk factors for this condition. Often, patients who have not sustained a fracture do not report symptoms that would alert the clinician to suspect a diagnosis of osteoporosis; thus, this disease is a "silent thief" that generally does not become clinically apparent until a fracture occurs. So the history should focus in: - Age (> 50 years), sex (female), and race (white or Asian) - Family history of osteoporosis, particularly maternal history of fractures. - Reproductive factors, especially regarding early menopause and estrogen replacement therapy. - ypogonadal states: men with hypogonadism secondary to any genetic or other conditions are at higher risk. 24 September 2021 by nadeer alassadi Osteoporosis Clinical Presentation
  • 34.
    Cont… - Smoking: smokersare at higher risk - Alcohol consumption - Low levels of physical activity: immobility increases the risk [65] ; spinal cord injury and stroke cause physical impairment and are common causes of immobility. - Strenuous exercise that results in amenorrhea (such as that which occurs in marathon runners) - Calcium and vitamin D intake - History of low-trauma "fragility" fracture in patients aged 40 years or older. -Coexisting medical conditions associated with bone loss:hyperparathyroidism, hypogonadism, leukemia, rheumatoid arthritis, celiac disease, and Cushing syndrome. - Medications associated with bone loss: examples are glucocorticoids, cyclosporine,anticonvulsant. 24 September 2021 by nader al_ assadi
  • 35.
    Physical Examination Patients withsuspected osteoporosis should undergo a comprehensive physical examination. •The physical examination should begin with an inspection of the patient. Height measurement with a stadiometer at each visit may be useful. • Examination of active and passive range of motion (ROM) assists in determining whether spine, hip, wrist, or other osseous pathology may be present. •Athorough neurologic examination is essential to rule out spinal cord and/or peripheral nerve compromise. •Sign of fracture (eg:Patients with vertebral compression fractures may have point tenderness over the involved vertebrae and demonstrate a thoracic kyphosis with an exaggerated cervical lordosis. •signs of collagen defects : Patients with osteoporosis may have physical findings consistent with subtle collagen defects. These include a short fifth digit, hyperlaxity, hearing loss. •Balance difficulties :Patients with osteoporosis are known to have decreased balance, possibly secondary to differences in balance control strategies and sway amplitude. Patients may have difficulty performing tandem gait and performing single limb stance. Poor balance may be noted particularly in patients with severe kyphosis resulting from vertebral compression fractures because their altered center of gravity makes ambulation with a stable base of support difficult for them.
  • 37.
    lap - 25 hydroxyvitaminD level - low 25 hydroxy cholecalciferol levels (25 hydroxy vit D) in patients sustaining low energy. - --Serum calcium, phosphates and -alkaline phosphatase . -Total plasma proteins and plasma albumin - .Collagen cross link polyptide . -IMAGE Radiographs indications • suspicion of fracture • loss of height • pain in thoracic or lumbar spine • recommended views • lateral spine radiograph • AP pelvis or hip • findings • thinned cortices • loss of trabecular bone • kyphosis • codfish vertebra
  • 39.
    Radiographic findings cansuggest the presence of osteopenia, or bone loss, but cannot be used to diagnose osteoporosis. Osteopenia is suggested by a cortical width that is less than the medullary width. Radiographs may also show fractures. Plain radiography is not as accurate as BMD testing. Because osteoporosis predominantly affects trabecular bone rather than cortical bone, radiography does not reveal osteoporotic changes until they affect the cortical bone. Cortical bone is not affected by osteoporosis until more than 30% of bone loss has occurred. Approximately 30-80% of bone mineral must be lost before radiographic lucency becomes apparent on radiographs. Thus, plain radiography is an insensitive tool for diagnosing osteoporosis. 1-Plain x ray
  • 43.
  • 45.
  • 47.
  • 48.
  • 50.
    The 2020 updateof the American Association of Clinical Endocrinologists (AACE) guidelines provides the following criteria for the diagnosis of osteoporosis in postmenopausal women : 1-
  • 51.
    Quantitative Computed Tomography QCT scanningof the spine is the most sensitive method for diagnosing osteoporosis, because it measures trabecular bone within the vertebral bon. 1- QCT is a very sensitive technique when repeated measurements are needed to detect small changes in BMD, 2- modern three-dimensional (3D) QCT acquisition has a scan time less than 10 seconds for the lumbar spine or proximal femur. 3- and there is no interference by osteophytes.
  • 52.
    Single-photon emission computed tomography(SPECT) represents a tomographic (CT-like) bone imaging technique that offer: 1- better image contrast 2- more accurate lesion localization than planar bone scanning. 3- PECT scanning is helpful when accurate localization of skeletal lesions within large and/or anatomically complex bony structures is required.(no bone overlap)
  • 53.
    Quantitative Ultrasonography Quantitative ultrasonography(QUS) of the calcaneus is a low-cost portable screening tool. It has the advantage of not involving radiation, but it is not as accurate as other imaging methods. Ultrasonography cannot be used for monitoring skeletal changes over time, nor can it be used to monitor the response to treatment, because of its lack of precision.
  • 54.
    Magnetic Resonance Imaging Theseosteoporotic fractures demonstrate characteristic changes in the bone marrow that distinguish them from other uninvolved parts of the skeleton and the adjacent vertebra.
  • 55.
    Bone Scanning one scansassesses the function and tissue metabolism of organs by using a radionuclide (technetium-99m [99m Tc]) that emits radiation in proportion to its attachment to a target structure. This technique detects an increase in osteoblastic activity (as seen in compression fractures.
  • 56.
    Bone Biopsy andHistologic Features. Bone biopsy can help to exclude underlying pathologic conditions, such as mastocytosis, that may be responsible for presumed osteoporotic fracture. Typically, iliac crest biopsy is performed either in the minor procedure suite or in the operating room. Histologic examination of osteoporotic bone may reveal generalized thinning of trabeculae and irregular perforation of trabeculae, reflecting unbalanced osteoclast-mediated bone resorption.
  • 57.
    . The principle objectivesof treatment are : - alleviation of pain . - prevention of fracture .
  • 58.
  • 59.
    Regular Weight-Bearing Exercise Definedas those in which bones and muscles work against gravity as feet and legs bear the body’s weight -Include walking, stair climbing, dancing, tennis, yoga. -Improve agility, strength, balance. -May increase bone density modestly, reduce fall risk, enhance muscle strength, improve balance.
  • 60.
    Avoidance of Tobaccoand Alcohol Tobacco products detrimental to skeleton, overall health .NOF National Osteoporosis Foundation (strongly encourages tobacco cessation programs as osteoporosis intervention) .
  • 62.
    Avoidance of Tobaccoand Alcohol Excessive alcohol intake also detrimental to bone health and requires treatment.
  • 63.
    Adequate Intake ofCalcium/Vitamin D Adequate intakes of dietary calcium and vitamin D, including supplements if necessary ◦ Elemental calcium per day at least 1200 -1500 mg. ◦ Vitamin D3 per day 800 -1000 international units (IU). Vitamin D3 (cholecalciferol) plays major role in Ca absorption Controlled clinical trials have demonstrated the combination reduces fracture risk Inexpensive, well- tolerated.
  • 64.
    Calcium/D Product Selection Product(% elemental Ca) Elemental Calcium (mg) Vitamin D (units) Comments Calcium carbonate (40) -Tums Ultra -Caltrate 600 Plus -Oscal Plus D -Viactiv Chews 400 600 500 500 200 125 100 Requires acidic environment for dissolution and disintegration. Best to take with meals. Greater risk for constipation with carbonate form. Calcium citrate (24) -Citracal Plus D - Citracal Petites with VitD 315 200 200 200 Take without regard to meals. Serving size usually equals 2 capsules so label can be misleading to patients. Vitamin D -Multivitamin (D3) -Vitamin D 120-450 400 100-400
  • 66.
    Vitamin D andFall Risk In addition to its effect on BMD, may contribute to reduction in fracture risk ◦ Improved muscle function(o+R+c) ◦ Reduction in risk for falls Vitamin D deficiency prevalent in older adult population ◦ Inadequate sun exposure, use of sunscreen ◦ Homebound, institutionalized ◦ Maintain 25-hydroxyvitamin D3 at least > 40 ng/mL ◦ Treatment: 50,000 IU vitD weekly x 6-8 weeks, then assess need for chronic monthly therapy
  • 67.
  • 69.
  • 70.
    Who Should BeTreated? NOF Recommendations – 2008 Initiate therapy to reduce fractures in postmenopausal women/men > 50 with: 1. BMD T-scores < -2.5 at hip or spine 2. Prior vertebral or hip fracture 3. Low bone mass (T-scores -1.0 to -2.5 at hip or spine) when: – 10-year probability of hip fracture is > 3% – 10-year probability of major osteoporosis-related fracture is > 20% – Based on US-adapted WHO algorithm www.nof.org
  • 71.
    FDA-Approved Drugs forOsteoporosis Bisphosphonates ◦ Alendronate, Alendronate plus D (Fosamax® , Fosamax Plus D® ) ◦ Risedronate, Risedronate with Calcium (Actonel® ) ◦ Ibandronate (Boniva® ) Selective Estrogen Receptor Modulators (SERMs) ◦ Raloxifene (Evista® ) Calcitonin (Miacalcin® , Fortical® , Calcimar® ) Parathyroid Hormone [PTH (1-34), teriparatide] ◦ Forteo® Estrogen/Hormone Therapy (ET/HT) ◦ Premarin® , Estrace® , Prempro®
  • 72.
    Bisphosphonates – AntiresorptiveAgents Agents FDA-approved for: ◦ Prevention and treatment of osteoporosis in postmenopausal women ◦ Treatment to increase bone mass in men with osteoporosis ◦ Treatment of glucocorticoid-induced osteoporosis in men and women receiving glucocorticoids ◦ Treatment of Paget’s disease of bone in men and women Mechanism: inhibits bone resorption by attaching to bony surfaces undergoing active resorption and inhibiting action of osteoclasts ◦ Leads to increases in bone density and reduced fracture risk
  • 73.
    Bisphosphonates Very well toleratedin patients who adhere to proper administration techniques Proper patient counseling for correct administration is KEY to reduce risk of adverse effects and increase tolerability Place in Therapy: should be considered first-line for prevention/treatment of osteoporosis in patients with no contraindications.
  • 74.
    Bisphosphonates – Clinical Efficacy Controlledclinical trials indicate over 3-4 year period, alendronate ↑ bone mass and ↓ incidence of vertebral, hip, and all non-vertebral fractures by 50% Controlled clinical trials indicate risedronate ↑ bone mass and ↓ risk of vertebral fractures by 40% and non-vertebral fractures by 30% over 3-year period Ibandronate has been shown in controlled clinical trials to ↑ BMD and reduce the risk of vertebral fracture by 50% over 3-year period Alendronate appears to be well tolerated and effective for at least ten years
  • 75.
    Zolendronic Acid (Reclast®) Approvedfor treatment of osteoporosis in postmenopausal women in August 2007 Single 5 mg infusion given IV over > 15 minutes, once yearly Should still supplement with calcium/vitamin D May be ideal for those with GI contraindications to the oral formulations.
  • 76.
    SERMs – Raloxifene FDA-approvedfor: ◦ Prevention and treatment of osteoporosis in postmenopausal women Mechanism: tissue-selective activity, acts as an estrogen agonist on bone ◦ Estrogen antagonist on breast, uterus.
  • 77.
    Raloxifene Place in Therapy:considered first-line in women who cannot tolerate bisphosphonates and have no contraindications to therapy. Combination therapy (usually a bisphosphonate with a non-bisphosphonate) can provide additional small increases in BMD when compared to monotherapy. Impact of combination therapy on fracture rate unknown
  • 78.
    Estrogen/Hormone Therapy (ET/HT) FDA approvedfor: ◦ Prevent osteoporosis ◦ Treatment of moderate/severe vasomotor symptoms of menopause ◦ Treatment of moderate/severe symptoms of vulvar and vaginal atrophy associated with menopause ◦ Consider topical preparations to treat vaginal symptoms rather than oral ET/HT
  • 79.
    FDA Recommendations – ET/HT Whenprescribing medications for osteoporosis, physicians should consider all non-estrogen therapies first. When prescribing ET/HT, use smallest dose for shortest amount of time to achieve treatment goals. Prescribe ET/HT products only when benefits believed to outweigh risks for a specific patient.
  • 80.
    Calcitonin FDA-approved for: ◦ Treatmentof osteoporosis in women who are > 5 years postmenopausal ◦ Treatment of Paget’s disease of bone. ◦ Adjunctive therapy for hypercalcemia. Mechanism: ◦ Peptide composed of 32 amino acids which binds to osteoclasts and inhibits bone resorption . ◦ Promotes the renal excretion of calcium, phosphate, sodium, magnesium and potassium by decreasing tubular reabsorption.
  • 81.
    Calcitonin – ClinicalEfficacy Has been shown to increase spinal bone mass and may decrease risk of vertebral fracture . Conflicting data on efficacy of calcitonin at sites other than the spine. Less effective than bisphosphonates in treatment of osteoporosis. Beneficial, short-term effect on acute bone pain after osteoporotic fracture (vertebral).
  • 82.
    Calcitonin Valid option fortreatment of established osteoporosis, especially when accompanied by fracture pain Place in therapy: because of cost, adverse effects, inconvenience of nasal administration, recommend using calcitonin until pain is no longer a problem and then switching to a bisphosphonate for long-term therapy
  • 83.
    Parathyroid Hormone [PTH(1-34)] Anabolic agent FDA-approved for: ◦ Treatment of osteoporosis in postmenopausal women at high risk for fracture ◦ previous osteoporotic fracture, multiple risk factors for fracture, extremely low BMD (< -2.5), or failed/intolerant to previous treatment ◦ Treatment of primary or hypogonadal osteoporosis in men at high risk of fracture Mechanism: recombinant formulation of endogenous parathyroid hormone (PTH) ◦ stimulates osteoblast function, increases gastrointestinal calcium absorption, increases renal tubular reabsorption of calcium ◦ Enhances bone turnover by initiating greater bone formation
  • 84.
    Guidelines from theAmerican Association of Clinical Endocrinologists (AACE), updated in 2020, include the following recommendations for choosing drugs to treat osteoporosis in postmenopausal women : - First-line agents for most high fracture risk patients: alendronate, risedronate, zoledronate,Denosumab. - First-line agents for high fracture risk patients unable to use oral therapy: abaloparatide, denosumab, romosozumab, teriparatide, and zoledronate. - First-line agents for spine-specific indications in select patients: ibandronate and raloxifene - Sequential agents: anabolic agents (eg, abaloparatide, romosozumab, teriparatide) should be followed with a bisphosphonate or denosumab. Combination therapy with two or more agents has not been shown to have a greater effect on fracture reduction than single therapy .
  • 85.
    Approaches to MonitoringTherapy Always important to ask patients about adherence, encourage continuation of therapies to reduce fracture risk Monitoring of therapy should be considered, as up to 1/6 of women taking effective therapies continue to lose bone, especially if they smoke May measure bone mineral density at a single site after one year of therapy, but results may be misleading; usually done every 2 years Drugs may decrease a patient’s risk for fracture even when there is no apparent increase in BMD.
  • 86.
    Bracing: Prophylactic bracingof the spine by using an brace or Taylor brace may be useful in prevention of pathological fractures in a severely osteoporotic spine .
  • 87.
    Complication of osteoporosis 1-vertebralcompression fractures often occur with minimal stress, such as coughing, lifting, or bending. 2- Hip fractures are the most devastating and occur most commonly at the femoral neck and intertrochanteric regions . Hip fractures are associated with falls. The likelihood of sustaining a hip fracture during a fall is related to the direction of the fall. Fractures are more likely to occur in falls to the side because less subcutaneous tissue is available to dissipate the impact. 3-Fractures can cause further complications, including chronic pain from vertebral compression fractures and increased morbidity and mortality secondary to vertebral compression fractures and hip fracture. They are also at risk for the complications associated with immobility, including deep vein thrombosis (DVT) and pressure ulcers. Respiratory compromise can occur in patients with multiple vertebral fractures that result in severe kyphosis. 4- patients with osteoporosis develop spinal deformities and a dowager's hump, and they may lose 1-2 inches of height by their seventh decade of life. These patients can lose their self-esteem and are at increased risk for depression.
  • 89.
    Prevention of Osteoporosis primaryprevention of osteoporosis starts in childhood. Patients require adequate calcium intake, vitamin D intake, and weight-bearing exercis . beyond this, prevention of osteoporosis has two:
  • 90.
    behavior modification Patients shouldbe counseled on : 1- smoking cessation 2- moderation(stop) of alcohol intake. 3- Regular weight-bearing exercise and back extensor strengthening help delay bone loss. 4- sunbath 15 minute
  • 91.
    pharmacologic interventions 1- calciumsupplementation and 2-administration of raloxifene or 3-bisphosphonates (alendronate or risedronate). *Bisphosphonates should be considered as first-line agents for the prevention of osteoporosis.
  • 93.
    Osteoporosis Osteomalacia Definition Reducedbone mass, normal mineralization Bone mass variable, reduced mineralization Age Post menopausal (Type I) or elderly (Type II) Any age Etiology Endocrine abnormality, age, idiopathic, inactivity, alcohol, calcium deficiency Vit D deficiency or abnormal vit D pathway, hypophosphatemia, hypophosphatasia, renal tubular acidosis Symptoms and signs Pain and tenderness at fracture site Generalized bone pain and tenderness Xray Axial fracture predominance Appendicular fracture predominance, symmetric, includes pseudofractures (Looser zones) Serum Ca Normal Low or normal Serum PO4 Normal Low or normal ALP Normal Elevated (except hypophosphatasia) Urinary Ca High or normal Normal or low (high in hypophosphatasia) Bone biopsy Tetracycline labeling normal Tetracycline labeling abnormal
  • 95.
  • 96.
    References 1) American Associationof Clinical Endocrinologists medical guidelines for clinical practice for the prevention and treatment of postmenopausal osteoporosis: 2020 update. Endocr Pract. May2020; 26(Suppl 1):1-46. (2) Kelman A, Lane NE. The management of secondary osteoporosis. Best Pract Res Clin Rheumatol. Dec 2005;19(6):1021-37. MEDSCape Author: Rachel Elizabeth Whitaker Elam, MD, MSc; Chief Editor: Herbert S Diamond, MD
  • 97.
    References Actonel® Prescribing Information (www.actonel.com) AnnIntern Med 1990;112:352 Ann Intern Med 2006;144:753 Boniva® Prescribing Information (www.boniva.com) Clinical Reviews in Bone and Mineral Metabolism 2004;2(4):291 Evista® Prescribing Information (www.evista.com) Forteo® Prescribing Information (www.forteo.com) Fortical® Prescribing Information (www.fortical.com) Fosamax® Prescribing Information (www.fosamax.com)
  • 98.
    References JAMA 2004;291(16):1999 J ClinDensitom 2004;7(1):1-6 J Am Acad Orthop Surg 2006;14:347 Miacalcin® Prescribing Information (www.miacalcin.com) Reclast® Prescribing Information (www.reclast.com) National Osteoporosis Foundation (http://www.nof.org) NEJM 2003;348:1187 NEJM 2004;350(12):1189-99 Osteoporosis Int 1998;8:1