•Discharge Osteoporosis
•Reactionnal Osteoporosis
–Septic joint
–Inflammatory Arthrides
–Villonodular synovitis….
Regional osteoporosis
•Clinical signs of another disease
•Joint space alterations:
–Narrowing à septic joint!
–Erosions à Rhumatoid Arthritis
Differential Diagnosis:
ITOH = No narrowing – No erosion