Differential Strain of the Axially Loaded Scapholunate Interosseus Ligament

Open Treatment of Acute Scapholunate Instability

“…We continue this restriction, as research has shown that in loaded wrist extension, there is a significant increase in SLIL strain, whereas there is minimal strain in the loaded neutral position. 35 …”

Length changes of scapholunate interosseous ligament at different wrist positions: an in vivo 3-dimension image study

“…We defined the three regions of the SLIL according to their known bone insertions and marked the origin and insertion of these ligaments on the surfaces of the bone reconstructions [1,2,13,19,21] (Fig. 1).…”

“…Upal et al [26] studied the length changes of the SLIL in wrist flexion and extension, as well as radial and ulnar deviation in vivo, and showed that the palmar fibers of the SLIL shortened and the dorsal fibers lengthened with wrist extension and the opposite occurred with wrist flexion. More recently, Lee et al [13] used MRI scans to study the differential strain of the SLIL when applying axial loads on hyperextended wrists, showing that strain is greatest in the palmar and proximal portions of the intact SLIL in wrist extension. In addition, we think that rotation of the forearm may be another important factor causing length changes of the SLIL.…”

Accuracy of simple plain radiographic signs and measures to diagnose acute scapholunate ligament injuries of the wrist

“…They typically result from forced hypertension or fractures of the wrist and, if missed and untreated, expose patients to a high risk of posttraumatic osteoarthritis of the radio-carpal joint. The reported prevalence of SL ligament tears among studies which used wrist arthroscopy as a diagnostic reference standard after trauma ranges from 9 to 32 % [1,2].…”