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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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Postoperative immobilization in forearm pronation protects any scapholunate surgical repair. A kinetic study in cadavers

Meeting Abstract

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  • presenting/speaker Mireia Esplugas - Institut Kaplan Barcelona, Barcelona, Spain
  • Guillem Salva-Coll - Hospital Son Espases, IBACMA, Mallorca, Spain
  • Marc Garcia-Elias - Institut Kaplan Barcelona, Barcelona, Spain
  • Alex Lluch-Bergada - Institut Kaplan Barcelona, Hospital Vall d´Hebrón, Barcelona, Spain
  • Inma Puig De La Bellacasa - Hospital Universitari Mutua Terrassa, Terrassa, Spain
  • Nuria Fernandez - Hospital Universitari Josep Trueta, Girona, Spain
  • Manuel Llusá-Pérez - Càtedra de Anatomia Universitat de Barcelona, Barcelona, Spain

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. DocIFSSH19-65

doi: 10.3205/19ifssh0008, urn:nbn:de:0183-19ifssh00080

Published: February 6, 2020

© 2020 Esplugas 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

Text

Objectives/Interrogation: To analyze:

1.
if there are significant changes in the alignment of the unstable scaphoid relative to the rest of the proximal carpal row alignment during forearm rotations and
2.
if there is one forearm rotation that best reduces scapholunate misalignment.

Methods: The changes in the alignment of both, scaphoid and the tandem lunate-triquetrum, were assessed in 8 fresh cadaver wrists using an electromagnetic motion tracking device. The wrists were isometrically loaded in three forearm rotations: 45º supination, neutral and 45º pronation. The experiment was subsequently repeated after complete scapholunate ligament (SLL) sectioning. The results were assessed using ANOVA with repeated measures. Significance was set at p<0.05.

Results and Conclusions:

Table 1 [Tab. 1], Figure 1 [Fig. 1]

Forearm pronation increases both the scaphoid and triquetrum supination, whereas forearm supination accentuates the scaphoid pronation and the lunate-triquetrum supination/extension tendency seen in wrists where SLL is torn.

Consequently, forearm pronation reduces scapholunate misalignment and protects any type of surgical SLL repair.