Scapholunate Interosseous Ligament and Dorsal Intercarpal Ligament Repair: A Two-Tailed Tendon Graft Repair for Scapholunate Ligament Dissociation_Crimson Publishers
Scapholunate Interosseous Ligament and Dorsal Intercarpal Ligament Repair: A Two-Tailed Tendon Graft Repair for Scapholunate Ligament Dissociation by Lisa L Lattanza* in Crimson Publishers: Peer Reviewed Orthopedic Research Journals
Injuries to the scapholunate ligament are common, and complete tears can lead to scapholunate (SL) dissociation, which is described as a loss of linkage between the scaphoid and the lunate. A history of a fall or sudden load on the wrist in extension usually precedes the complaint of pain on the radial side of the wrist localized over the scapholunate interval [1]. Stability of the scapholunate complex is dependent on extrinsic capsular ligaments and the scapholunate interosseous ligament (SLIL). With a deficient SLIL, the scaphoid flexes and rotates away from the lunate while the lunate extends, as the lunotriquetral ligament is still intact. This combination produces a dorsal intercalated segment instability (DISI deformity), which is characteristic of scapholunate dissociation [2]. If not corrected acutely, these altered kinematic loads through the radiocarpal joint lead to progressive deterioration of the secondary scaphoid stabilizers, which progresses to overall carpal dysfunction and further scaphoid malalignment. There is typically progression to further instability, leading to debilitating patterns of arthritis in the radiocarpal and midcarpal joints known as scapholunate advanced collapse (SLAC) [3].
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