Incise the radial wall of the fourth compartment and retract the extensor digitorum communis tendons ulnarly.
The dorsal capsule is incised with a radial-based triangular flap to preserve the dorsal intercarpal ligament and dorsal radiocarpal ligaments (Fig. 34-2A,B).
The SL ligament is inspected; typically it has avulsed from the lunate.
Figure 34-1
Figure 34-2
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