Passive muscle tension changes in the biceps femoris long head after biceps femoris short head detachment: A human cadaver study.

Autor: Nakao G; Graduate School of Health Sciences, Sapporo Medical University, Sapporo, Japan; Professional Post-secondary Course (Physical Therapist), Sapporo Medical Technology, Welfare and Dentistry Professional Training College of Nishino Gakuen School Foundation, Sapporo, Japan., Yamagata K; Graduate School of Health Sciences, Sapporo Medical University, Sapporo, Japan., Adachi R; Graduate School of Health Sciences, Sapporo Medical University, Sapporo, Japan., Ishiyama K; Graduate School of Health Sciences, Sapporo Medical University, Sapporo, Japan., Kozawa K; Graduate School of Health Sciences, Sapporo Medical University, Sapporo, Japan., Watanabe K; Department of Physical Therapy, School of Health Sciences, Sapporo Medical University, Sapporo, Japan., Ohsaki Y; Department of Anatomy (I), School of Medicine, Sapporo Medical University, Sapporo Japan., Shiwaku K; Department of Orthopaedic Surger, School of Medicine, Sapporo Medical University, Sapporo, Japan., Hayashi N; Musculoskeletal Functional Anatomy Research Institute, Gifu, Japan., Katayose M; Department of Physical Therapy, School of Health Sciences, Sapporo Medical University, Sapporo, Japan., Taniguchi K; Department of Physical Therapy, School of Health Sciences, Sapporo Medical University, Sapporo, Japan. Electronic address: ktani@sapmed.ac.jp.
Jazyk: angličtina
Zdroj: Journal of biomechanics [J Biomech] 2024 Dec 13; Vol. 179, pp. 112480. Date of Electronic Publication: 2024 Dec 13.
DOI: 10.1016/j.jbiomech.2024.112480
Abstrakt: The functional role of the biceps femoris short head (BFsh) remains unclear. Clarifying the functional role of each biceps femoris head may provide useful insights into the reduction of biceps femoris long head (BFlh) injuries. This study aimed to clarify whether the passive tension in the BFlh would change with BFsh detachment using cadavers. The shear modulus of the BFlh and BFsh was measured using ultrasonic shear wave elastography as an index of passive tension in three tissue processing conditions (intact, removal of all tissues from skin to deep fascia, and BFsh detachment) in four limb positions, with hip [H0°, H90°] and knee [K0°, K90°] joint angles under each tissue processing condition. The measurement site was the distal 30 % of the line connecting the sciatic tuberosity (100 %) and fibular head (0 %). Three-way analysis of variance was conducted with muscles, tissue processing, and positions as factors, which revealed a significant interaction (P < 0.01). The post-test results indicated that the BFlh was significantly higher than the BFsh at H90° and K0° before tissue processing; however, no difference was observed between the muscles after skin and deep fascia removal. After BFsh detachment, the shear modulus of the BFsh decreased, whereas that of the BFlh significantly increased (P < 0.01), suggesting that the BFsh might be involved in the passive tension reduction of the BFlh in a lengthened position, as the shear modulus of the BFlh increased after detachment.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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