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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Forearm rotation modifies the scapholunate joint muscle control. 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. DocIFSSH19-89

doi: 10.3205/19ifssh0390, urn:nbn:de:0183-19ifssh03900

Veröffentlicht: 6. Februar 2020

© 2020 Esplugas et al.
Dieser Artikel ist ein Open-Access-Artikel und steht unter den Lizenzbedingungen der Creative Commons Attribution 4.0 License (Namensnennung). Lizenz-Angaben siehe http://creativecommons.org/licenses/by/4.0/.

Gliederung

Text

Objectives/Interrogation: Abductor Pollicis Longus (APL), Extensor Carpi Radialis Longus (ECRL) and Extensor Carpi Radialis Brevis (ECRB) are the scapholunate joint stabilizer muscles in neutral forearm rotation. Extensor Carpi Ulnaris (ECU) is the destabilizer one. Forearm rotation modifies these muscles spatial anatomy.

Does forearm rotation modify ECRL, ECRB, APL and ECU scapholunate joint stabilizing role? Is there any forearm rotation in which the muscle-controlled scapholunate joint stability is impaired?

Methods: The changes in the alignment of both, the scaphoid and the triquetrum, were assessed in 8 fresh cadaver wrists using an electromagnetic motion tracking device. APL, ECRL, ECRB, ECU were individually isometrically loaded in three forearm rotations: supination, neutral and pronation. The experiment was subsequently repeated after complete scapholunate ligament (SLL) sectioning. The results were assessed using ANOVA with repeated measures to compare the scaphoid and triquetrum rotation and elevation position data with those in neutral forearm rotation. Significance was set at p<0.05.

Results and Conclusions:

Table 1 [Tab. 1]

  • Forearm rotation modifies the scapholunate joint stabilizing muscles role.
  • Forearm supination impairs the worst the muscle-controlled scapholunate joint stability capacity.
  • The ECU muscle destabilizes the scapholunate joint in all forearm rotations.