Computational reverse shoulder prosthesis model: Experimental data and verification

JOURNAL OF BIOMECHANICS

卷:48

Article

Martins, A.¹  Quental, C.¹  Folgado, J.¹  Ambrosio, J.¹  Monteiro, J.²  Sarmento, M.² 

[1] Univ Lisbon, Inst Super Tecn, IDMEC, P-1049001 Lisbon, Portugal

[2] Univ Lisbon, Fac Med, P-1049001 Lisbon, Portugal

关键词: Multibody system dynamics;    Musculoskeletal model;    Shoulder joint;    Reverse shoulder prosthesis;    Inverse dynamics;   

DOI  :  10.1016/j.jbiomech.2015.06.031

来源: Elsevier

【 摘 要 】

The reverse shoulder prosthesis aims to restore the stability and function of pathological shoulders, but the biomechanical aspects of the geometrical changes induced by the implant are yet to be fully understood. Considering a large-scale musculoskeletal model of the upper limb, the aim of this study is to evaluate how the Delta reverse shoulder prosthesis influences the biomechanical behavior of the shoulder joint. In this study, the kinematic data of an unloaded abduction in the frontal plane and an unloaded forward flexion in the sagittal plane were experimentally acquired through video-imaging for a control group, composed of 10 healthy shoulders, and a reverse shoulder group, composed of 3 reverse shoulders. Synchronously, the EMG data of 7 superficial muscles were also collected. The muscle force sharing problem was solved through the minimization of the metabolic energy consumption. The evaluation of the shoulder kinematics shows an increase in the lateral rotation of the scapula in the reverse shoulder group, and an increase in the contribution of the scapulothoracic joint to the shoulder joint. Regarding the muscle force sharing problem, the musculoskeletal model estimates an increased activity of the deltoid, teres minor, clavicular fibers of the pectoralis major, and coracobrachialis muscles in the reverse shoulder group. The comparison between the muscle forces predicted and the EMG data acquired revealed a good correlation, which provides further confidence in the model. Overall, the shoulder joint reaction force was lower in the reverse shoulder group than in the control group. (C) 2015 Elsevier Ltd. All rights reserved.

【 授权许可】

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