Fifth Stage
Orthopedics
Dr. Haider – Lecture 9
1
Septic arthritis
Definition:
Pathogenesis:
Causes
2
Physical Examination
Position of rest
:
Minimal intrasynovial pressure
3
Investigations
Diagnosis:
Arthrocentesis
o Usually purulent with increased count (50,000 to 150,000 cells/mm3)
o The synovial fluid glucose is often depressed and lactic acid concentration is elevated.
o Synovial fluid culture
Imaging:
Treatment
Surgical management
Surgical drainage
Arthroscopic debridement and copious irrigation with normal saline – more frequently in
knee joint septic arthritis.
4
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