Scapholunate advanced collapse (SLAC) and dorsal intercalated segmental instability (DISI)
Pain and functional limitation in trauma outcomes.
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Scapholunate dissociation refers to the interruption of the mechanical connection between the scaphoid and lunate due to scapholunate ligament tear (Terry Thomas sign). It is the most common cause of carpal instability and can occur in isolation or in association with scaphoid fractures. Scaphoid rotational subluxation represents an advanced stage of the condition.