Three-dimensional architecture of the great toe muscles: functional implications in hallux valgus

Authors : Valera CASTANOV, Maxine VİENNEAU, Takamitsu ARAKAWA, S HASSAN, Anne AGUR, Diane TYCZYNSKİ

Pages : 77-85

View : 19 | Download : 15

Publication Date : 2020-08-31

Article Type : Research Paper

Abstract :Objectives: Imbalance of great toe musculature has been identified as a factor in the development of hallux valgus. The musculoaponeurotic architecture, an important determinant of function, has not been investigated volumetrically in the great toe musculature. The purpose of this study was to reconstruct the abductor halluces insert ignore into journalissuearticles values(ABDH);, adductor halluces insert ignore into journalissuearticles values(ADH);, flexor hallucis brevis medial insert ignore into journalissuearticles values(FHBM); and lateral insert ignore into journalissuearticles values(FHBL); heads volumetrically and to quantify and compare their architectural parameters and functional characteristics. Methods: Ten formalin-embalmed specimens were dissected, digitized and modelled insert ignore into journalissuearticles values(Autodesk Maya®);. Fiber bundle length insert ignore into journalissuearticles values(FBL); and physiological cross-sectional area insert ignore into journalissuearticles values(PCSA); of the muscles were compared using descriptive and parametric statistics. Results: The spatial arrangement of aponeuroses insert ignore into journalissuearticles values(AP); / fiber bundles insert ignore into journalissuearticles values(FB); and architectural parameters varied throughout the volume of each muscle. The PCSA of the medial insert ignore into journalissuearticles values(ABDH/FHBM); and lateral insert ignore into journalissuearticles values(ADH/FHBL); musculature was similar; however, the medial musculature had significantly greater mean FBL. Conclusion: Each muscle had varying AP/FB arrangement. The similar PCSA of the medial and lateral musculature suggests that their relative force generating capabilities are balanced in asymptomatic individuals.
Keywords : fiber bundle lenght, great toe, hallux valgus, muscle architecture, PCSA, pennation angle, volume