Monoarticular arthritis causes

Common causes

 * Avascular necrosis of bone


 * Crystals:
 * Monosodium urate
 * Calcium pyrophosphate dihydrate
 * Apatite
 * Calcium oxalate


 * Hemarthrosis


 * Infectious arthritis
 * Bacteria
 * Fungi
 * Mycobacteria
 * Viruses
 * Lyme disease


 * Internal derangement
 * Osteoarthritis
 * Osteomyelitis
 * Overuse
 * Trauma

Less Common Causes

 * Bone malignancies
 * Bowel-disease–associated arthritis
 * Hemoglobinopathies
 * Juvenile rheumatoid arthritis
 * Loose body
 * Psoriatic arthritis
 * Rheumatoid arthritis
 * Reactive arthritis
 * Sarcoidosis

Rare Causes

 * Amyloidosis
 * Behçet’s syndrome
 * Familial Mediterranean Fever
 * Foreign-body synovitis
 * Hypertrophic Osteoarthropathy
 * Intermittent hydrarthrosis
 * Pigmented villonodular synovitis
 * Relapsing polychondritis
 * Still’s disease
 * Synovioma
 * Synovial metastasis
 * Vasculitic syndromes

Complete Differential Diagnosis of the Causes of Monoarticular arthritis
(By organ system)