1) Acute pyogenic arthritis is a bacterial infection of the synovial membrane that leads to purulent effusion in the joint capsule. It is considered a rheumatologic emergency as joint destruction can occur rapidly.
2) Common causative organisms are Staphylococcus and Streptococcus bacteria. The knee is the most commonly infected joint. Clinical features include fever, pain, swelling and reduced range of motion in the affected joint.
3) Treatment involves antibiotics, drainage of purulent material from the joint, and physiotherapy. Without prompt treatment, complications can include joint damage, deformity and ankylosis. Prognosis depends on factors like the infected joint, age and delay in treatment.
I upload for my future reference.
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Feel free to download if you need a fast reference or feel free to edit and improve if you need to do your presentations.
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Acute pyogenic arthritis by dr ashutosh
1. Presented By-
Dr. Ashutosh Kumar
AP Dept. Of Orthopaedics
Rohilkhand Medical collage & hospital Bareilly UP.
Acute Pyogenic Arthristis
2. DEFINITION
Inflammation of a synovial membrane with purulent effusion into the joint
capsule, often due to bacterial infection
Considered as a rheumatologic emergency as joint destruction occurs rapidly and
can lead to significant morbidity and mortality.
3. INTRODUCTION
• Caused by pyogenic organism
• Present as an acute painful arthritis
• Can be subacute or chronic
• Pyogenic arthritis = Infective arthritis = Suppurative
arthritis
• Most dangerous and destructive monoarthritis
• Can destroy cartilage within days
• Mortality 7-15 % despite antibiotic use
4. AIMS
• To list the main differentials for acute monoarthritis
• To understand the pathogenesis of pyogenic arthritis
• To list the main organisms that cause pyogenic arthritis
• To recognize the symptoms and signs
• To understand the key risk factors and how this affects subsequent investigation
• To describe the anatomy and method for needle aspiration
• To describe empirical antibiotic therapy and approaches for joint aspiration
5. Risk Factors
• Age over 80yrs
• DM
• RA
• Recent joint surgery
• Hip or knee prosthesis
• Skin infection
• Skin infection + joint prosthesis
• HIV
• IV drug abuse
• Alcoholism
• IA steroid injection
6. AETIOPATHOGENESIS
1. HEMATOGENOUS – commonest, through pyoderma, throat
infection, septicemia.
2. SECONDARY TO NEARBY OSTEOMYELITIS – common in joint with intra articular metaphysis ; hip, shoulder.
3. PENETRATING WOUNDS – knee being superficial joint.
4. IATROGENIC – following intra articular steroid injection / femoral artery puncture for blood collection.
5. UMBILICAL CORD SEPSIS – infants.
9. • Can be bacterial, fungal, mycobacterial or viral
• Bacterial divided into gonococcal and nongonococcal
• Gonococcal more common but less morbidity and mortality
• Staphylococcus
• Streptococcus
Causative Organisms
10. Common sites susceptible to infection
Knee: 55%
Ankle: 10%
Wrist: 9%
Shoulder: 7%
Hip: 5%
Elbow: 5%
SC: 5%- IV drug
abuser
SI: 2%- IV drug abuser
Foot joints: 2%
11. Clinical features
Infants Septicaemia >joint pain
- Irritable
- Refused to feed
- Rapid pulse
- Fever
Check :
- Joints carefully
- Umbillicalcord
- Inflammed IV site
- Chest’s, spine, abdomen
Children Acute pain – single large joint Ex: knee and hip
- Reluctance to move (pseudoparesis)
- Rapid pulse, Swinging fever
- Overlying skin – red, Local warmth
- Superficial joint swell obvious
- All movement restricted
12. Adult Superficial joints
(knee, wrist, finger, ankle or toe)
- Painful
- Swollen
- Inflamed
- Movement restricted
*questioned and examination for:
- Gonococcal infection
- Drug abuse
- Rheumatoid arthritis
14. Symptoms
• Pain in affected joint 85%
• Swelling in affected joint 78%
• Large joint (knee or hip 60%)
• Wrists and ankles also common
• Sweats 27%
• Rigors 19%
• May be subacute- especially TB and prosthetic joints
• More than 1 joint affected in 22% cases
• Underlying RA or overwhelming sepsis
16. DIFFERENTIAL
• Infection- bacterial, mycobacterial, fungal
• Gout
• Pseudogout
• Reactive arthritis
• Osteoarthritis
• Haemarthrosis
• Lyme disease
• SLE
• RA
• 2-9 / 100 000 person years
• 8-27% patients presenting to ED with acute arthritis
INCIDENCE
17. Imaging
• Ultrasound
– most reliable method
• revealing joint effusion
– widening of space between capsule and bone >2cm
• X-ray
– Search for signs:
• Soft tissue swelling
• Loss of tissue plane
• Widening of radiographic ‘joint space’
• Slight sublaxation
– Late features?
• Narrowing and irregularity of joint space
18.
19. INVESTIGATIONS
• Blood
– Neutrophilic leucocytosis
– Increase ESR, elevated CRP
• Joint aspiration
– Quickest and best method
Arthrocentesis
Usually purulent with increased count (50,000 to150,000 cells/mm3)
The synovial fluid glucose is often depressed and lactic acid concentration is elevated.
Synovial fluid culture
21. Radionuclide bone scans:
technetium-99m , methyldiphosphonate
increase in isotope accumulation in areas of osteoblasts and increased
vascularity
Computed tomography (CT), or magnetic resonance imaging (MRI) are far more
sensitive than plain films in early septic arthritis.
MRI:
Synovial enhancement and the presence of a joint effusion & perisynovial soft tissue
edema.
22. Treatment
general
supportive
care
• The first priority is to aspirate the joint and examine the fluid. If aspirate
looks purulent, joint drainage should be done neglecting the lab results
splintage
AntibioticsDrainage
aftercare
23. • General Supportive care
• Analgesics for pain and IV fluids for dehydration
• Splintage
• joint should be rest, light splintage for neonates and infants.
• For hip infection, joint should be abduct ,30 degrees flexed to prevent
dislocation.
24. TREATMENT
IV antibiotics: for initial 1-2wks followed by oral antibiotics for 3-4 wks.
Concurrent systemic corticosteroids are also supposed to shorten
duration of illness with less residual joint damage and dysfunction.
25. • Drainage
– under anaesthesia small incisions was made , drained and washed out with physiological
saline, small catheter is place and the wound is closed, suction continue for 2-3 days
– This policy are advisable for
• In very young patients
• when hip is invovle
• if the aspirated pus is thick
– in older children with symptoms less than 3 days ,
we can do closed aspiration of the joint
29. Physiotherapy management
Reduce pain
Restore and maintain physiological function
Patient education about exercise and management of their condition.
Immobilization
control pain as it is often too painful to bear weight.
Mobilization can begin if the patient is responding well following 5 days of gentle treatment. PT
needs to consists of allowing the joint to be in its functional position and positioning the joint to
allow passive range of motion activities
• Aftercare
30. • Aftercare
– Mobility after no longer painful is necessary to prevent stiffness of the
joint
31. Cont….
Electrotherapy-ice
hydrotherapy, heat and TENS, IFT, Ultrasound to manage
pain and joint stiffness.
NB: heat modalities are not supposed to be used in the acute
phase or before initiation of antibiotic treatment.
33. FOLLOW UP
• Once general condition is satisfactory and the joint is no longer painful or warm, further
damage is unlikely.
• If articular cartilage has been preserved, gentle and gradually increase active movements.
• If articular cartilage has been destroyed the aim is splinting to keep the joint immobile while
ankylosis is awaited.
• If deformity is present, subsequent osteotomy should be planned to correct it.
34. Complications
Highest incidence occurs for infants below 6 months, most of which affect the hip
– obvious risk are
• delay diagnosis and treatment >4d
• concomitant osteomyelitis of proximal femur .
• Subluxation /dislocation of the hip /instability of the knee
– prevented by appropriate posturing or splintage
• Damage to the cartilaginous or epiphysis
– Sequelae include retarded growth, complete or partial damage to
epiphysis, joint deformity, bone necrosis, acetabular dysplasia and pseudarthrosis of the hip.
• articular cartilage erosions
– may cause restricted movements or complete ankylosis of the joints.
35. ACUTE PYOGENIC ARTHRITIS IN INFANCY
• Acute pyogenic arthritis of the hip
• Cartilaginous head of femur completely destroyed
• Rapid abscess formation, which burst out and heals rapidly
• Child complaint of limp without pain
– Examination
• Unstable gait, shorter leg, hip movement increased in all direction
• Xray : absence head and neck of femur
• Closely resemble cdh, how to differ (xray above and normally develop round of
acetabulum)
36. TOM SMITH ARTHRITIS
Septic arthritis of hip in infancy
Results in complete destruction of cartilaginous femoral head.
Presentation is a child in his preschool age with painless limp
Affected limb is shorter
X-ray shows complete absence of head and neck of
femur.
37. GONOCOCCAL ARTHRITIS
• Nisseria gonnorrhea is the commonest cause of acute
pyogenic athritis in sexually active adults and poor
population
38. • Clinical features
– disseminated gonococcal infection
• triad of polyarthritis, tenosynovitis and dermatitis
– septic arthritis of a single joint
• usually the knee, ankle, shoulder, wrist or hand
• Investigation
– ESR and WBC count will be raised.
– If get suspected, the patient should be questioned about possible contacts during the previous days or weeks and they should
be examined for other signs of genitourinary infection (e.g. a urethral discharge or cervicitis).
– Joint aspiration : high white cell count and typical Gram-negative organisms.
• Treatment
– third-generation cephalosporin iv im
– Ass with chlamydial infection : quinolone antibiotics (ciprofloxacin and ofloxacin)
– If organism is found to be sensitive to penicillin, treatment with ampicillin,
amoxicillin or clavulanic acid is also effective
39. Prognosis
The best outcome for individuals with acute pyogenic arthritis is immediate treatment.
Mortality ranges from 19-25% permanent joint disability occurs in 25-
50% of the cases.
Fifty percent of adults with acute pyogenic arthritis have significant decreased ROM or
chronic pain after the infection.
Poor outcome predictors in prognosis of acute pyogenic arthritis include the following:
Age older than 60, infection of the hip or shoulder joints, underlying rheumatoid arthritis,
positive findings on synovial fluid cultures after 7 days of therapy, delay of 7 days or longer in
beginning treatment