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Cadaveric scapholunate reconstruction using the ligament augmentation and reconstruction system
Kevin Eng1, Michael Wagels2, Stephen K Tham3
1Department of Orthopaedics, Barwon Orthopaedic Research Unit, The Geelong Hospital, Geelong, Victoria, Australia.
Journal of Wrist Surgery
|August 7, 2014
Summary
This study presents a novel technique for treating scapholunate dissociation using a synthetic-autologous graft. The method effectively restored carpal alignment, preventing arthritis progression and maintaining stability after cyclic loading.
Area of Science:
- Orthopedic Surgery
- Biomechanics
- Hand Surgery
Background:
- Untreated scapholunate ligament disruption can lead to wrist arthritis.
- Existing treatments may fail to prevent arthritis due to ligament attenuation or kinematic issues.
Purpose of the Study:
- To evaluate a combined synthetic-autologous technique for treating scapholunate dissociation.
- To assess the efficacy of the Ligament Augmentation & Reconstruction System (LARS) with modified capsulodesis.
Main Methods:
- Scapholunate dissociation was induced in six cadaveric wrists.
- Reconstruction involved LARS and modified Blatt capsulodesis.
- Cyclic passive motion testing and radiological assessment were performed.
Main Results:
- The technique successfully re-established carpal alignment.
- Alignment was maintained after 1000 cycles of flexion and extension.
- No fraying or loosening of the LARS graft was observed.
Conclusions:
- The described technique corrects carpal malalignment in scapholunate dissociation.
- This method provides stable reconstruction, addressing dorsal and palmar ligament components.
- A dorsal wrist approach is suitable for reconstructing these components.
