Scapholunate Advanced Collapse (SLAC) Wrist

SLAC.jpg

SLAC.jpg

Findings

The scapholunate space is widened. There is proximal migration of the capitate. Radiocarpal joint is narrowed. Osteophytosis and subchondral sclerosis are seen along the triscaphe joint. Small ossicle projects over lunotriquetral joint.

Discussion

Scapholunate advanced collapse (SLAC) wrist can result from several conditions, which include scapholunate dissociation, osteoarthritis, scaphoid nonunion, avascular necrosis of lunate (Kienbock disease) or avascular necrosis of scaphoid (Preiser disease), and inflammatory and crystal deposition arthropathies.