Monoarticular arthritis

Septic Arthritis

1. Gonococcal Arthritis
2. Nongonococcal Arthritis
3. Arthritis-Dermatitis Syndrome

Crystal-Induced Monoarthritis

1. Gout
2. Pseudogout

Traumatic

1. Fracture
2. ligamentous
3. Overuse

Ischemic

1. Avascular necrosis
2. Decompression illness
3. Spontaneous osteonecrosis
4. pain in abscence of trauma
5. femoral head, medial conyle of knee

Hemorrhagic

1. Posttraumatic
   1. Joint aspiration if tense
   2. RICE
2. Hemophilia
3. Systemic anticoagulation

Neoplastic

1. Mets
2. Osteochondroma
3. Osteoid osteoma
4. Pigmented villonodular synovitis

Systemic Disease

1. Remote infxn, infectious endocarditis
2. Rheumatic fever
3. Seronegative (no RF) spondyloarthropathies (AS, IBS, psoriatic, reactive or Reiter's)
4. Rheumatoid arthritis, SLE
5. Sarcoidosis, amyloidosis

Periarticular

these conditions mimic joint involvement...

1. Cellulitis
2. Tendonitis
3. Bursitis

Pediatric

1. Acute Transient Synovitis
   1. Children 3-10yo
   2. 1-3 wks after viral illness
   3. Self-limited
2. Slipped Capital Femoral Epiphysis (SCFE) (portly pubescent)
3. Legg Calve Perthes Disease (young school-age children)

See Also

Pseudogout

Gout

Septic Arthritis (Hip)

Septic Arthritis (General)

Source

H-N