Carpal Instability
A 28-year-old female presents with wrist pain and a "clunking" sensation during ulnar deviation. She denies specific trauma but notes generalized joint laxity. Examination reveals a positive midcarpal shift test with a palpable clunk during ulnar deviation with axial load. Radiographs appear normal. The surgeon suspects midcarpal instability. Regarding midcarpal instability (MCI):
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Midcarpal instability occurs at the MIDCARPAL joint between the proximal and distal carpal rows; it ...
The MIDCARPAL SHIFT TEST (clunk test) is pathognomonic: the examiner stabilizes the forearm in prona...
Midcarpal instability is classified as Carpal Instability Dissociative (CID) because the scaphoid an...
Etiology includes: generalized ligamentous laxity (most common), malunited distal radius fractures a...
Radiographic findings: STATIC radiographs are often NORMAL (dynamic instability); stress views or fl...
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Click T (True) or F (False) for each option