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Updated: Jan 28, 2026

Three-Dimensional Reconstruction of Orbital Fractures
Published on: May 16, 2025
A four-dimensional-CT study of in vivo scapholunate rotation axes: possible implications for scapholunate ligament
Marieke G A de Roo1,2, Marijn Muurling3, Johannes G G Dobbe2
11 Plastic, Reconstructive and Hand Surgery, University of Amsterdam, Amsterdam UMC, The Netherlands.
Abstract:
Additional fixation of the palmar scapholunate interosseous ligament has been advocated to improve the long-term results of dorsal scapholunate interosseous ligament reconstruction. To investigate the validity of this approach, we determined normal scapholunate motion patterns and calculated the location of the scapholunate rotation axis. We hypothesized that the optimal location of the scapholunate interosseous ligament insertion could be determined from the scapholunate rotation axis. Four-dimensional computerized tomography was used to study the wrist motion in 21 healthy participants. During flexion-extension motions, the scaphoid rotates 38° (SD 0.6°) relative to the lunate; the rotation axis intersects the dorsal ridge of the proximal pole of the scaphoid and the dorsal ridge of the lunate. Minimal scapholunate motion is present during radioulnar deviation. Since the scapholunate rotation axis runs through the dorsal proximal pole of the scaphoid, this is probably the optimal location for attaching the scapholunate ligament during reconstructive surgery.
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