Scapholunate advanced collapse (SLAC) and dorsal intercalated segmental instability (DISI)

Case contributed by Dr Domenico Nicoletti


Pain and functional limitation in trauma outcomes.

Patient Data

Age: 60
Gender: Male

MRI right wrist

Scapholunate ligament tear with scaphoid rotational subluxation and lunate displacement in DISI position; early proximal capitate dislocation between the scaphoid and the distal radial shaft with signs of carpal arthritis (scapholunate advanced collapse).  Normal triangular fibrocartilage. Small amount of joint effusion.

Case Discussion

Scapholunate dissociation refers to the interruption of the mechanical connection between the scaphoid and lunate. Scapholunate is the most common carpal instability and can be isolated or in association with scaphoid fractures. The rotational subluxation of the scaphoid represents an advanced stage of the lesion.


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Case information

rID: 56176
Case created: 16th Oct 2017
Last edited: 17th Oct 2017
Inclusion in quiz mode: Included

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