Imaging of the hand: degeneration, impingement and overuse

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Abstract

Degenerative and overuse diseases as well as impingement syndromes of the hand are illustrated and discussed in this review article. Osteoarthritis of the interphalangeal joints as described by Heberden and Bouchard is a ubiquitous articular disease often associated with synovitis and erosive joint destruction. Osteoarthritis of the trapeziometacarpal joint is classified into four stages for proper indication of operation. Overuse can result in stenosing tenosynovitis around the wrist and in synovitis with or without impingement of the flexor or extensor tendons of the digitis or ruptures of the annular and cruciform pulleys. Although diagnosis of these entities is usually made by history and clinical investigation, ultrasound and MRI can be helpful tools in imaging of these diseases. Scapholunate advanced collapse (SLAC) and scaphoid nonunion advanced collapse (SNAC) are the characteristic degeneration pattern of the wrist and represent the degeneration mechanisms in scapholunate insufficiency and nonunion of the scaphoid. SLAC wrist is a gradual degeneration classified in three stages and found in posttraumatic scapholunate rupture, calcium pyrophosphate dehydrate deposition disease (CPPD), rheumatoid arthritis, neuropathic diseases, trauma, and β2-microglobulin associated amyloid deposition. Ulna impaction syndrome is increasingly recognized as a cause of ulnar sided pain and exhibits a characteristic MRI appearance.

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