Can a reduction approach predict reliable joint contact and musculo-tendon forces?

JOURNAL OF BIOMECHANICS

卷:95

Article

Dumas, Raphael¹  Barre, Arnaud²  Moissenet, Florent^3,4  Aissaoui, Rachid^5,6 

[1] Univ Lyon, Univ Claude Bernard Lyon 1, LBMC UMR T9406, IFSTTAR,LBMC, F-69622 Lyon, France

[2] Moveck Solut Inc, Quebec City, PQ, Canada

[3] Univ Geneva Hosp, Willy Taillard Lab Kinesiol, Geneva, Switzerland

[4] Univ Geneva, Geneva, Switzerland

[5] CHUM, Ctr Rech, Lab Rech Imagerie & Orthopedie, Montreal, PQ, Canada

[6] Ecole Technol Super, Dept Genie Syst, Montreal, PQ, Canada

关键词: Musculoskeletal model;    Joint loadings;    Lower limb;    Gait;    Instrumented prosthesis;    Validation;   

DOI  :  10.1016/j.jbiomech.2019.109329

来源: Elsevier

【 摘 要 】

Musculoskeletal models generally solve the muscular redundancy by numerical optimisation. They have been extensively validated using instrumented implants. Conversely, a reduction approach considers only one flexor or extensor muscle group at the time to equilibrate the inter-segmental joint moment. It is not clear if such models can still predict reliable joint contact and musculo-tendon forces during gait. Tibiofemoral contact force and gastrocnemii, quadriceps, and hamstrings musculo-tendon forces were estimated using a reduction approach for five subjects walking with an instrumented prosthesis. The errors in the proximal-distal tibiofemoral contact force fell in the range (0.3-0.9 body weight) reported in the literature for musculoskeletal models using numerical optimisation. The musculo-tendon forces were in agreement with the EMG envelops and appeared comparable to the ones reported in the literature with generic musculoskeletal models. Although evident simplifications and-limitations, it seems that the reduction approach can provided quite reliable results. It can be a useful pedagogical tool in biomechanics, e.g. to illustrate the theoretical differences between inter-segmental and contact forces, and can provide a first estimate of the joint loadings in subjects with limited musculoskeletal deformities and neurological disorders. (C) 2019 Elsevier Ltd. All rights reserved.

【 授权许可】

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