Monoarticular arthropathy

Monoarticular arthropathy can result from a number of causes:

Commonest :

• gout (15-27%)
• septic arthritis (8-27%)
• osteoarthritis (5-17%)
• rheumatoid arthritis (RA)(11-16%)

Less common :

• traumatic arthritis
• HADD (hydroxyapatite deposition disease)
• reactive arthritis 
• avascular necrosis
• lupus arthritis 
• psoriatic arthritis 
• pigmented villonodular synovitis (PVNS)
• synovial osteochondromatosis
• osteochondritis dissecans