Radiographic Evaluation of the Modified Brunelli Technique Versus the Blatt Capsulodesis for Scapholunate Dissociation in a Cadaver Model

Comparison of Radiographic Stress Views for Scapholunate Dynamic Instability in a Cadaver Model

“…In addition, cadaveric specimens were used to replicate dynamic stress positions, and static weights were used to simulate muscle loads in accordance with methods previously described in the literature. 11,12 The true in vivo scenario is undoubtedly more complex. Also, the relatively small number of specimens used limited the statistical power of the study.…”

“…This type of tendon loading for wrist positioning is consistent with previously described techniques in the literature. 11,12 Views that required specific angles of UD were achieved by manually positioning the wrists at the appropriate angle, as measured using a goniometer. The 20 radiographic positions described later were performed on each specimen after ligamentous sectioning.…”

Chronic Scapholunate Ligament Injuries

“…The modified Brunelli technique (MBT) is superior biomechanically in maintaining SL angle and preventing SL diastasis with physiologic loading. 6 However, Moran and colleagues 7 found similar improvement in SL angle but progressive SL widening at mean follow-up of 36 months in his series of 15 patients with MBT reconstruction.…”

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“…Studies have shown that this procedure provides satisfactory postoperative correction of the SL gap and angle, with acceptable losses in grip strength and range of motion [7,26]. The MBT has compared well against other techniques, as it has demonstrated superiority in restoring normal carpal alignment of the SL interval in a cadaver when compared to the Blatt capsulodesis [27]. It also compares favorably to arthrodesis techniques, which have noted significant complications from altered carpal kinematics in long-range studies [14,16].…”