This document discusses degenerative diseases of the joints, spine, and their presentation and management. It notes that degenerative joint disease (osteoarthritis) is a common condition affecting older adults, especially weight-bearing joints like the hips and knees, causing pain and stiffness. Degenerative spine disease also increases with age and can result in back pain, nerve root compression, and spinal cord issues. Management involves exercises, weight control, medications, and possibly surgery to relieve symptoms from joint and spine degeneration.
Osteoarthritis: It covers all the aspects of Osteoarthritis such as definition, etiology, pathophysiology, management such as pharmacotherapy, and non-pharmacological treatment.
Osteoarthritis: It covers all the aspects of Osteoarthritis such as definition, etiology, pathophysiology, management such as pharmacotherapy, and non-pharmacological treatment.
Osteoporosis is a chronic, progressive disease of multifactorial etiology.
It is most frequently recognized in particularly in elderly people and does occur in sexes, all races, and all age groups.
Osteoporosis is a preventable disease that can result in disturbing physical, psychosocial, and economic consequences.
Osteoporosis is a systemic skeletal disease characterized by low bone mass and micro architectural deterioration of bone tissue.
Osteoporosis is a chronic, progressive disease of multifactorial etiology.
It is most frequently recognized in particularly in elderly people and does occur in sexes, all races, and all age groups.
Osteoporosis is a preventable disease that can result in disturbing physical, psychosocial, and economic consequences.
Osteoporosis is a systemic skeletal disease characterized by low bone mass and micro architectural deterioration of bone tissue.
Tom Selleck Health: A Comprehensive Look at the Iconic Actor’s Wellness Journeygreendigital
Tom Selleck, an enduring figure in Hollywood. has captivated audiences for decades with his rugged charm, iconic moustache. and memorable roles in television and film. From his breakout role as Thomas Magnum in Magnum P.I. to his current portrayal of Frank Reagan in Blue Bloods. Selleck's career has spanned over 50 years. But beyond his professional achievements. fans have often been curious about Tom Selleck Health. especially as he has aged in the public eye.
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Introduction
Many have been interested in Tom Selleck health. not only because of his enduring presence on screen but also because of the challenges. and lifestyle choices he has faced and made over the years. This article delves into the various aspects of Tom Selleck health. exploring his fitness regimen, diet, mental health. and the challenges he has encountered as he ages. We'll look at how he maintains his well-being. the health issues he has faced, and his approach to ageing .
Early Life and Career
Childhood and Athletic Beginnings
Tom Selleck was born on January 29, 1945, in Detroit, Michigan, and grew up in Sherman Oaks, California. From an early age, he was involved in sports, particularly basketball. which played a significant role in his physical development. His athletic pursuits continued into college. where he attended the University of Southern California (USC) on a basketball scholarship. This early involvement in sports laid a strong foundation for his physical health and disciplined lifestyle.
Transition to Acting
Selleck's transition from an athlete to an actor came with its physical demands. His first significant role in "Magnum P.I." required him to perform various stunts and maintain a fit appearance. This role, which he played from 1980 to 1988. necessitated a rigorous fitness routine to meet the show's demands. setting the stage for his long-term commitment to health and wellness.
Fitness Regimen
Workout Routine
Tom Selleck health and fitness regimen has evolved. adapting to his changing roles and age. During his "Magnum, P.I." days. Selleck's workouts were intense and focused on building and maintaining muscle mass. His routine included weightlifting, cardiovascular exercises. and specific training for the stunts he performed on the show.
Selleck adjusted his fitness routine as he aged to suit his body's needs. Today, his workouts focus on maintaining flexibility, strength, and cardiovascular health. He incorporates low-impact exercises such as swimming, walking, and light weightlifting. This balanced approach helps him stay fit without putting undue strain on his joints and muscles.
Importance of Flexibility and Mobility
In recent years, Selleck has emphasized the importance of flexibility and mobility in his fitness regimen. Understanding the natural decline in muscle mass and joint flexibility with age. he includes stretching and yoga in his routine. These practices help prevent injuries, improve posture, and maintain mobilit
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As flu season approaches, health officials in Bangalore, Karnataka, are urging residents to get their flu vaccinations. The seasonal flu, while common, can lead to severe health complications, particularly for vulnerable populations such as young children, the elderly, and those with underlying health conditions.
Dr. Vidisha Kumari, a leading epidemiologist in Bangalore, emphasizes the importance of getting vaccinated. "The flu vaccine is our best defense against the influenza virus. It not only protects individuals but also helps prevent the spread of the virus in our communities," he says.
This year, the flu season is expected to coincide with a potential increase in other respiratory illnesses. The Karnataka Health Department has launched an awareness campaign highlighting the significance of flu vaccinations. They have set up multiple vaccination centers across Bangalore, making it convenient for residents to receive their shots.
To encourage widespread vaccination, the government is also collaborating with local schools, workplaces, and community centers to facilitate vaccination drives. Special attention is being given to ensuring that the vaccine is accessible to all, including marginalized communities who may have limited access to healthcare.
Residents are reminded that the flu vaccine is safe and effective. Common side effects are mild and may include soreness at the injection site, mild fever, or muscle aches. These side effects are generally short-lived and far less severe than the flu itself.
Healthcare providers are also stressing the importance of continuing COVID-19 precautions. Wearing masks, practicing good hand hygiene, and maintaining social distancing are still crucial, especially in crowded places.
Protect yourself and your loved ones by getting vaccinated. Together, we can help keep Bangalore healthy and safe this flu season. For more information on vaccination centers and schedules, residents can visit the Karnataka Health Department’s official website or follow their social media pages.
Stay informed, stay safe, and get your flu shot today!
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1. Enlist the non-respiratory functions of the respiratory tract
2. Briefly explain how these functions are carried out
3. Discuss the significance of dead space
4. Differentiate between minute ventilation and alveolar ventilation
5. Describe the cough and sneeze reflexes
Study Resources:
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2. Chapter 34, Ganong’s Review of Medical Physiology, 26th edition
3. Chapter 17, Human Physiology by Lauralee Sherwood, 9th edition
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1. DEGENERATIVE DISEASE OF
JOINTS AND SPINE
PRESENTER: DR.ABDULMAJID H. SAID (RESIDENT)
FACILITATOR: DR.ANTHONY ASSEY (SENIOR LECTURER & CONSULTATNT
SPINE & OT )
2. Degenerative joints disease
• Degenerative joint disease, also known as osteoarthritis (OA), is a
common “wear and tear” disease.
• Most of the people who have OA are older than age 45,and women
are more commonly affected than men.
3. Definition
• Is a chronic joint disorder in which there is progressive softening and
disintegration of articular cartilage accompanied by new growth of
cartilage and bone at the joint margins (osteophytes), and capsular
fibrosis
4. • As defined by the American College of Rheumatology (ACR),OA is a
heterogenous group of condition that leads to joint signs and
symptoms which are associated with defective integrity of articular
cartilage in addition to related changes in the underlying bone at the
joint margins.
5. Epidemiology
• Age > 65years
80% have radiographic features.
25-30% have symptoms
• More common in women
• Weight bearing joints e.g knee & hip joints
• Familial tendency
13. Progressive loss of articular cartilage thickness
Subarticular cyst formation and sclerosis;
Re-modelling of the bone ends and osteophyte formation;
Synovial irritation; and
Capsular fibrosis.
15. Pathogenesis
• Initiated by a mixture of systemic predisposing factors interacting
with local mechanical influences that affect the site and severity of
the OA changes, but the changes themselves are chemically
mediated.
16. • A lot of current work revolves around the generation of local cytokines and
proteolytic enzymes within the joint, and cell signalling pathways that link
chondrocyte activity to changes in the subchondral bone, synovium and
capsule
• The early changes in cartilage appear to result from collagenase enzymes
disrupting the integrity of the type II collagen matrix which encloses the
hydrophilic proteoglycans, leading to swelling and softening; subsequently,
more proteolysis and damage to proteoglycans, as well as collagen, results
in the fissuring and loss of volume.
• It is less clear how the changes at the tidemark and in subchondral bone
are mediated, where increased calcification and angiogenesis are switched
on, and trabecular thickening is seen, perhaps in part as a result of
subchondral micro-fractures of trabeculae
17. Clinical Features
• Pain
Activity & weight bearing
Variable over time
Only one or few joints involved
• Morning stiffness only brief < 30 minutes
• Restricted functionality
Capsular thickening
Blocking by osteophytes
18. Clinical findings in knee O/A
• Targets patella-femoral & medial tibio-femoral compartments of knee
• Pain is localized to anterior or medial aspect of knee & upper tibia
• Jerky gait
• Varus deformity
• Joint line &/or periarticular tenderness
• Weakness and wasting of quadriceps muscle.
• Restricted extension & flexion
• Bony swelling around joint
19. Clinical Findings in Hip joint
• Targets mostly superior aspect & less commonly medial aspect of
joint.
• Pain is maximally deep in groin area.
• Antalgic gait.
• Weakness & wasting of muscles (quadriceps & gluteal)
• Pain & restricted internal rotation with flexion.
29. Introduction.
• Can be defined as a gradual Loss of normal stuctural function of the
spine over time.
• Caused mainly by aging, but also tumours, arthritis or infection.
• Leading to structural failure and compression of the neural structures
within the spinal canal, discs and neuro foramen.
30. • Affects mostly the mobile parts of the spine (cervical and lumbar
spine).
31. Epidermiology.
Degenerative cervical spine disease.
• On the basis of radiologic findings, 90% of men older than 50 years
and 90% of women older than 60 years have evidence of
degenerative changes in the cervical spine.
• Both sexes seem to be affected equally but the presentation is usually
early in males.
32. • No race seem to be more affected by the disease.
• Age seem to be the major factor in cervical spondylosis, with
• 25% of adults under the age of 40,
• 50% of adults over the age of 40, and
• 85% of adults over the age of 60
• Also there is increased incidence those who carry heavy loads on
their heads or shoulders, in dancers and gymnasts, horse back riders.
33. Lumbar degenerative disease.
• Incidence is 27-37% of the asymptomatic lower back pain population.
eg In the United States, 3% of individuals aged 20-29 years and rising
to more than 80% of individuals older than 40 years have lumbar
spondylosis.
• occurs in 6-10% of the general population and has been found to be
as high as 25-60% in athletes.
• The prevalence of radiographic spondylosis increases with age and
become more past the age of 65.
34. • Age is the greatest risk factor, but other possibilities include disc
desiccation, previous injury, joint overload from malalignment and/or
abnormal z-joint orientation, and genetic predisposition.
• Studies evaluating the role of body mass index (BMI), level of activity,
and gender on incidence and severity of lumbar spondylosis do not
show a clear correlation.
38. Intervertebral disc changes.
• Includes, Disc buldge, Annular tear, and Herniation.
• Vacuum Phenomenon
• Brought by decrease in water and proteoglycan content in the annulus
fibrosus.
• Collagen fibres becomes distorted.
• Leading to disc tear, decreased disc height and volume, and loss of
resistance to physiological loads.
39. Disc Buldge.
• Generalized or circumferential disc displacement (involving 50% to
100% of the disc circumference) is known as "bulging", and is not
considered a form of herniation.
• Bulging can be symmetrical (displacement of disc material is equal in
all directions) or asymmetrical (frequently associated with scoliosis)
41. Vertebral body/ Endplate changes.
Modic changes classification consists of 4 types.
• Type 0 - normal disc and vertebral body appearance.
• Type I - presence of bone marrow edema within vertebral body and
hyper-vascularization.
• Type II - fatty replacements of the red bone marrow within vertebral
body.
• Type III - subchondral bone sclerosis.
42. Vertebral osteophites.
• An osteophyte is a fibrocartilage-capped bony outgrowth.
• Can be extraspinal (marginal, central, periosteal, or capsular) or
Vertebral (traction or claw).
44. Facet joints.
• Cartilage lining Losses water content, cartilage wears away, facets
override on each other.
• Leading to abnormal function of motion segment.
• Facet joint Ligaments become thickened and hypertrophic.
• New bone formation around the joint can occur with the development
of osteophytes or “bone spurs.”
45. Ligamentum flavum.
• Loss of elastin fibres which are replaced by collagen fibers.
• Also deposition of Ca2+.
• Ligamentum flavum can lose strength and elasticity, causing it to
thicken and buckle towards the spinal cord and neuroforamina.
53. Cervical degenerative disease.
• Axial neck pain - pain localised to the spinal column.
• Cervical radiculopathy - complaints in a dermatomal or myotomal
distribution often occurring in the arms. May be numbness, pain or
loss of function.
54.
55. • Cervical myelopathy - a cluster of complaints and findings due to
intrinsic damage to the spinal cord itself. Numbness, coordination and
gait issues, grip weakness and bowel and bladder complaints with
associated physical findings may be reported.
56. • Central cord syndrome, in which motor and sensory deficits affected
the upper extremities more severely than the lower extremities.
• Brown-Séquard syndrome, which consisted of ipsilateral motor
deficits with contralateral sensory deficits.
• Brachialgia and cord syndrome, which consisted of radicular pain in
the upper extremity along with motor and/ or sensory long-tract
signs.
57. • Transverse lesion syndrome, in which the corticospinal,
spinothalamic, and posterior cord tracts were involved with almost
equal severity and which was associated with the longest duration of
symptoms, suggesting that this category may be an end stage of the
disease.
• Motor system syndrome, in which corticospinal tracts and anterior
horn cells were involved, resulting in spasticity
60. Myelopathy.
Conus medularis syndrome.
• Most distal part of the spinal cord situated at level of L1-L2 vertebral
bodies and comprises of sacral segments S1-S5.
• May present with Saddle anasthesia, Absent Bulbocarvenous reflexes,
and absent anal reflexes.
• LMN- at the level of the lesion.
• UMN- below the level of the lesion.
61.
62. • Saddle Anaesthesia: A loss of feeling or numbness between the legs
and/or back passage and/or genitals.
• Bladder Disturbance: Difficulty controlling urination, loss of sensation.
• Bowel Disturbance: Inability to control bowel movements, a loss of
sensation and/or constipation
• Sexual Problems: Inability to maintain erection or ejaculate, loss of
sensation during intercourse
• Nerve Root Pain: Combination of pain, numbness or weakness in back and
legs and/or changing temperature sensations and/or
• spasms in the lower limbs.
63.
64.
65. Spondylolisthesis
• Spondylolisthesis (also known as anterolisthesis) is defined as an
anterior displacement of a vertebra relative to the vertebra below,
whereas the reverse, i.e. when the superior vertebra slips posterior to
that below, is called retrolisthesis
(Butt and Saifuddin 2005).
69. lateral radiograph
important to look for diameter of spinal canal
• a Pavlov ratio of less than 0.8 suggest a congenitally narrow spinal
canal predisposing to stenosis and cord compression
• sagittal alignment
• C2 to C7 alignment
70. MRI
• views
T2 axial imaging gives needed information on the status of the soft
tissues.
• findings
disc degeneration and herniation
foraminal stenosis with nerve root compression (loss of perineural
fat)
central compression with CSF effacement
71. CT without contrast
• complementary information with an MRI, more useful to evaluate
OPLL and osteophytes
CT myelography
• More invasive than an MRI , excellent information on degree of
spinal cord compression
73. Studies
Nerve conduction studies
• high false negative rate
• may be useful to distinguish peripheral from central processes
Selective nerve root corticosteroid injections
• may help confirm level of radiculopathy in patients with multiple level
disease, and when physical exam findings and EMG fail to localize
level .
74. INDICATIONS
Evaluate degree of spinal
cord and nerve root compression
FINDINGS
effacement of CSF indicates functional stenosis
spinal cord signal changes
seen as bright signal on T2 images (myelomalacia)
signal changes on T1-weighted images correlate with a poorer prognosis following
surgical decompression
compression ratio of < 0.4 carries poor prognosis
78. Physical Therapy Modalities:1st Line
• 1.Exercise therapy
2.Ice/ Heat therapy
3.Manual therapy
4.Traction
5.Electrotherapy
Splints and Orthotics
Types of spinal orthotics:CO,CTO,CTLO
79. Pharmacotherapy
Multi-modal pain management
WHO Pain LAdder
Commonly Used medications
NSAIDS:Diclofenac
STEROIDS:Prednisolone
CALCIUM SUPPLEMENTS
VITAMINS:Vitamin B Complex containing 1,6 and 12
MUSCLE RELAXANTS eg Baclofen
ANXIOLYTICS/ANTI-CONVULSANTS: eg Pregabalin,Gabapentin
CAFERGOT+ERGOTAMINE
•
80. Surgery and follow-up reviews
Operative
surgical decompression, restoration of lordosis, stabilization
indications
significant functional impairment and
1-2 level disease
lordotic, neutral or kyphotic alignment
techniques
appropriate procedure depends on
cervical alignment
number of stenotic levels
location of compression
medical conditions e.g., goiter
81. Anterior Decompression and Fusion (ACDF)
indications
mainstay of treatment in most patients with single or two level disease
fixed cervical kyphosis of > 10 degrees
anterior procedure can correct kyphosis
compression arising from 2 or fewer disc segments
pathology is anterior (OPLL, soft discs, disc osteophyte complexes)
approach
uses Smith-Robinson anterior approach
corpectomy and strut graft may be required for multilevel spondylosis
82. Laminoplasty
indications
gaining in popularity
useful when maintaining motion is desired
avoids complications of fusion so may be indicated in
patients at high risk of pseudoarthrosis
contraindications
cervical kyphosis
> 13 degrees is a contraindication to posterior
decompression
83. Laminectomy with posterior fusion
indications
• multilevel compression with kyphosis of < 10 degrees
• > 13 degrees of fixed kyphosis is a contraindication for a posterior procedure
• in flexible kyphotic spine, posterior decompression and fusion may be indicated if
kyphotic deformity can be corrected prior to instrumentation
contraindications
• fixed kyphosis of > 10 degrees is a contraindication to posterior decompression
• will not adequately decompress spinal cord as it is "bowstringing" anterior
84. anterior cervical discectomy and fusion
indications
• persistent and disabling pain that has failed nonoperative modalities
• progressive and significant neurologic deficits .
posterior foraminotomy
indications
• foraminal soft disc herniation causing single level radiculopathy ideal
• may be used in osteophytic foraminal narrowing
cervical total disc replacement
indications (controversial)
• single level disease with minimal arthrosis of the facets .
85. Techniques
Anterior Cervical Discectomy and Fusion (ACDF)
approach
• uses Smith-Robinson anterior approach
techniques
• decompression
• placement of bone graft increases disk height and decompresses the neural foramen through
indirect decompression
• corpectomy and strut graft may be required for multilevel spondylosis
• fixation --- anterior plating functions to increase fusion rates and preserve position of interbody
cage or strut graft .
86. Posterior foraminotomy
approach
• posterior approach
technique
• if anterior disc herniation is to be removed, then superior portion of
inferior pedicle should be removed .
87. Total disc replacement
approach
• uses Smith-Robinson anterior approach
Patient Follow Plan:To review progress of care and to identify
complications
Editor's Notes
some studies estimate that over 80% of people over 55 years of age have osteoarthritis of at least one joint
In a normal joint (a), the loading forces are evenly distributed. Cartilage damage results from: (b) increased stress on some part of the articular surface; (c) a preceding inflammatory disorder which weakens the cartilage and renders it unable to bear even normal loads; or (d) abnormality of the subarticular bone which alters its ability to support the cartilage appropriately
The term bulge refers to a morphologic characteristic and is not correlated with etiology or symptomatology.
Bulging can be physiologic (e.g. in the mid-cervical spine and at L5-S1), can reflect advanced degenerative disc disease, can be associated with bone remodeling (as in advanced osteoporosis), occur with ligamentous laxity, or can be a "pseudo image" due to partial volume averaging
An asymmetrical bulging disc can be associated with scoliosis. Bulging discs are not considered a form of herniation
Concentric tears are circumferential lesions which are found in the outer
layers of the annular wall (Martin et al. 2002). They represent splitting between
adjacent lamellae of the annulus, like onion rings. Concentric tears are most
commonly encountered in the outer annulus fibrosus, and are believed to be of
traumatic origin especially from torsion overload injuries.
Radial tears are characterized by an annular tear which permeates from the
deep central part of the disc (nucleus pulposus) and extends outward toward the
annulus, in either a transverse or cranial-caudal plane.
Transverse tears, also known as "peripheral tears" or "rim lesions," are
horizontal ruptures of fibers, near the insertion in the bony ring apophyses. Their
clinical significance remains unclear. Transverse tears are believed to be traumatically
induced and are often associated with small osteophytes.
Their presence in clients receiving physiotherapy for low back pain may be of significance when discussing prognosis and benefits of exercise therapy.
Proposed risk factors for developing MC include:
Body mass index (BMI) ranking of overweight or obese
Advanced age
Smoking.
Risk factors for development of osteophytes include age, body mass index, physical activity, and other genetic and environmental factors.
Transforming growth factor β plays a role in the pathophysiology of osteophyte formation.
Osteophytes can cause pain, limit range of motion, affect quality of life, and cause multiple symptoms at the spine.
Medical treatment involves the use of bisphosphonates and other non-steroidal anti-inflammatory agents.
Surgical treatment in the form of cheilectomy for impingement syndromes during joint replacement is recommended.
Cervical facet syndrome includes following symptoms:
Axial neck pain (rarely radiating past the shoulders), most common unilaterally
Pain with and/or limitation of extension and rotation
Tenderness upon palpation
Radiating pain locally or into the shoulders or upper back, and rarely radiate in the front or down an arm or into the fingers as a herniated disc might.
Lumbar facet syndrome can be characterised by following symptoms:[6]
Pain or tenderness in lower back.
Local tenderness/stiffness alongside the spine in the lower back.
Pain, stiffness or difficulty with certain movements (such as standing up straight or getting up from a chair.
Pain upon hyperextension
Referred pain from upper lumbar facet joints can extend into the flank, hip and upper lateral thigh
Referred pain from lower lumbar facet joints can penetrate deep into the thigh, laterally and/or posteriorly
L4-L5 and L5-S1 facet joints can refer pain extending into the distal lateral leg, and in rare instances to the foot
In a substantial number of patients, axial neck pain is a result of muscular or ligamentous factors related to
posture, poor ergonomics, stress, and/or chronic muscle fatigue. Neck muscle pain can develop secondarily
as a result of postural adaptations to a primary source of pain in the shoulder,
the craniovertebral junction, or the temporomandibular joint. The physiology of this pain process in the
involved muscles is unclear. Patients with chronic myofascial pain have been shown to have a lower level of
high energy phosphates in the in- volved muscle tissue. It is unclear whether this causes the pain or is a result of the pain.
Raj Rao 2002
Nerve fibers and nerve endings found in the peripheral portions of the disc2,3 offer a possible mechanism by which degenerated cer- vical discs can produce pain directly. The disc is innervated by the sinuver- tebral nerve, formed by branches from the ventral nerve root and the sympa- thetic plexus3 (Fig. 1). Once formed, the nerve turns back into the inter- vertebral foramen along the posterior aspect of the disc, supplying portions of the annulus, the posterior longi- tudinal ligament, the periosteum of the vertebral body and pedicle, and the adjacent epidural veins. A recent re- view of the findings of cervical discog- raphy performed over a twelve-year period suggested that reliable patterns of pain are produced by stimulation
of each cervical disc4 (Fig. 2). The au- thors reported a high percentage of patients in whom multiple discs were concurrently responsible for axial neck pain.
The exact pathogenesis of radicular pain is unclear, but it is generally thought that, in addition to the compression, an inflammatory response of some kind is necessary for pain to develop. Within the compressed nerve root intrinsic blood vessels show increased permeability, which secondarily results in edema of the nerve root. Chronic edema and fibrosis within the nerve root can alter the response threshold and increase the sensitivity of the nerve root to pain. Neurogenic chemical mediators of pain released from the cell bodies of the sensory neurons and non-neurogenic mediators released from disc tissue may play a role in initiating and perpetuating this inflammatory response
Cervical radiculopathy refers to symp- toms in a specific dermatomal distribu- tion in the upper extremity. Patients describe sharp pain and tingling or burning sensations in the involved area. There may be sensory or motor loss cor- responding to the involved nerve root, and reflex activity may be diminished.
Patients typically have severe neck and arm pain that prevents them from getting into a comfortable position. They may hold the arm over the head, typically resting the wrist or forearm on top of the head (the shoulder abduction sign12) and sometimes tilting the head to the contralateral side. The symptoms are usually aggravated by extension or lateral rotation of the head to the side of the pain (the Spurling maneuver).
The anterior-posterior diameter of the sub- axial spine in normal adults measures 17 to 18 mm, and the diameter of the spinal cord is approximately 10 mm in this region. Individuals with an anterior- posterior diameter of the spinal canal of <13 mm are considered to have congenital cervical stenosis. There is a strong association between flattening of the cord within the narrowed spinal canal and the development of cervical myelopathy. Penning et al.13 believed that symptoms of cord compression occurred when the transverse area ofthe cord was <60 mm2. Houser et al. thought that the shape and degree of
flattening of the spinal cord could be an indicator of neurologic deficit; 98% of their patients with severe stenosis and a banana-shaped spinal cord had clinical evidence of myelopathy14. Ono et al. de- scribed an anterior-posterior cord- compression ratio that was calculated by dividing the anterior-posterior di- ameter of the cord by the transverse di- ameter of the cord. Patients with substantial flattening of the cord, suggested by an anterior-posterior ra- tio of <0.40 tended to have worse neu- rologic function. Ogino et al. thought that an increase in this ratio to ≥0.40 or an increase in the transverse area to >40 mm2 was a strong predictor of recovery following surgery16.
The forward slip of the upper vertebra is measured using the
method of Meyerding, or the method described by Taillard.
Using the method of Meyerding, the anteroposterior (AP)
diameter of the superior surface of the lower vertebra is
divided into quarters and a grade of I- IV is assigned to slips
of one, two, three or four quarters of the superior vertebra,
respectively. The other method, described by Taillard,
expresses the degree of slip as a percentage of the AP
diameter of the top of the lower vertebra
(Butt and Saifuddin 2005).