gms | German Medical Science

14th Triennial Congress of the International Federation of Societies for Surgery of the Hand (IFSSH), 11th Triennial Congress of the International Federation of Societies for Hand Therapy (IFSHT)

17.06. - 21.06.2019, Berlin

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In Vivo Length Changes of Scapholunate Interosseous Ligament during Wrist Flexion-Extension

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  • presenting/speaker Shuguo Xing - Affiliated Hospital of Nantong University, Nantong, China
  • Tian Mao - Affiliated Hospital of Nantong University, Nantong, China
  • Guheng Wang - Affiliated Hospital of Nantong University, Nantong, China

International Federation of Societies for Surgery of the Hand. International Federation of Societies for Hand Therapy. 14th Triennial Congress of the International Federation of Societies for Surgery of the Hand (IFSSH), 11th Triennial Congress of the International Federation of Societies for Hand Therapy (IFSHT), 11th Triennial Congress of the International Federation of Societies for Hand Therapy (IFSHT). Berlin, 17.-21.06.2019. Düsseldorf: German Medical Science GMS Publishing House; 2020. DocIFSSH19-1856

doi: 10.3205/19ifssh0965, urn:nbn:de:0183-19ifssh09658

Published: February 6, 2020

© 2020 Xing et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 License. See license information at http://creativecommons.org/licenses/by/4.0/.

Outline

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Objectives/Interrogation: Objectives: To investigate the changes in the length of the palmar, proximal and dorsal subregions of the scapholunate interosseous ligament (SLIL) in healthy human subjects during the wrist flexion-extension in vivo.

Methods: We obtained computed tomography scans in six wrists of healthy volunteers. The scans were performed with the wrist at 5 positions, from 60° of flexion to 60° of extension, 30° increments. We reconstructed three-dimensional images of scaphoid and lunate with software. The paths of three different fibers of SLIL were modeled. Each subregions of SLIL are divided into three beams. The lengths of each beams of SLIL between their respective origin and insertion points were measured and compared among different positions of wrist flexion-extension.

Results and Conclusions: From neutral position to flexion of 60°, the plamar and proximal subregions of SLIL lengthened significantly. From neutral position to extension of 60°, the intermediate and dorsal beams of proximal subgions lengthened significantly. From neutral position to flexion of 30° and extension of 30°, the distal beam of plamar subregions lengthened significantly.

During the wrist flexion-extension, the length of the palmar and proximal subregions of the SLIL changed substantially, but the dorsal subregions changed minimally.