Scapholunate advanced collapse (SLAC)

Discussion:

SLAC (scapholunate advanced collapse) refers to a specific pattern of osteoarthritis and subluxation which results from untreated chronic scapholunate dissociation or from chronic scaphoid non-union. In the case example the likely culprit is chronic scaphoid non-union. The pattern of sequential degenerative arthritis of the wrist includes: arthritis between the scaphoid, lunate, and radius (57%), arthritis between scaphoid, trapezium, and trapezoid (27%) and a combination of these two patterns (15%).1

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