(A) Evaluation of a complete tear of the scapholunate ligament (SLL). The arthroscope is in the 6R portal, and the probe is in the 3-4 portal. The probe can be introduced between the scaphoid and the lunate. (B) With the arthroscope in the midcarpal ulnar portal and probe in the midcarpal radial portal, the scapholunate instability (Geissler grade III) at the midcarpal joint is evaluated. (C, D) Cleaning of the fibers and scar material and cruentation of the insertion of the SLL on the scaphoid. The arthroscope is in the 6R portal, and the shaver is in the 3-4 portal. A left wrist is shown. (C, capitate; DC, dorsal capsule; L, lunate; S, scaphoid.)