Shoulder model validation and joint contact forces during wheelchair activities.
Shoulder model validation and joint contact forces during wheelchair activities.
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DOI：
10.1016/j.jbiomech.2010.05.026
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发表时间：
2010-09-17
影响因子：
2.4
通讯作者：
An, Kai-Nan
中科院分区：
文献类型：
--
作者：
Morrow, Melissa M. B.;Kaufman, Kenton R.;An, Kai-Nan
慢性肩部撞击是手动轮椅使用者的常见问题。与执行日常生活的手动轮椅活动相关的负载是大量的，并且经常处于高频率。肌肉骨骼建模和优化技术可用于估计发生在肩部的关节接触力，以评估活动期间的软组织负荷，并可能识别手动轮椅使用者肩部受伤风险的活动和策略。本研究的目的是验证上肢肌肉骨骼模型，并将该模型应用于轮椅活动的估计关节接触力的分析。上肢运动学和handrim轮椅动力学进行了测量，在三个条件：水平推进，坡道推进，和重量减轻电梯。实验数据被用作输入到特定于受试者的肌肉骨骼模型中，该模型利用优化来预测在所有条件下肩部的关节接触力。使用平均绝对误差计算来验证该模型。模型结果证实，坡道推进和减重升降机的地方，肩关节接触负荷显着高于水平推进。此外，它们表现出较大的上级接触力，这可能导致撞击。这项研究强调了与坡道和减重提升活动相关的潜在碰撞风险。水平推进被证明有一个相对较低的风险，造成伤害，但考虑到推进的频率进行，这一观察是不确定的。
Chronic shoulder impingement is a common problem for manual wheelchair users. The loading associated with performing manual wheelchair activities of daily living is substantial and often at a high frequency. Musculoskeletal modeling and optimization techniques can be used to estimate the joint contact forces occurring at the shoulder to assess the soft tissue loading during an activity and to possibly identify activities and strategies that place manual wheelchair users at risk for shoulder injuries. The purpose of this study was to validate an upper extremity musculoskeletal model and apply the model to wheelchair activities for analysis of the estimated joint contact forces. Upper extremity kinematics and handrim wheelchair kinetics were measured over three conditions: level propulsion, ramp propulsion, and a weight relief lift. The experimental data were used as input to a subject-specific musculoskeletal model utilizing optimization to predict joint contact forces of the shoulder during all conditions. The model was validated using a mean absolute error calculation. Model results confirmed that ramp propulsion and weight relief lifts place the shoulder under significantly higher joint contact loading than level propulsion. In addition, they exhibit large superior contact forces that could contribute to impingement. This study highlights the potential impingement risk associated with both the ramp and weight relief lift activities. Level propulsion was shown to have a low relative risk of causing injury, but with consideration of the frequency with which propulsion is performed, this observation is not conclusive.
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影响因子：
2.4
作者：
Bergmann, G.;Graichen, F.;Westerhoff, P.
通讯作者：
Westerhoff, P.
影响因子：
3.8
作者：
Holzbaur, KRS;Murray, WM;Delp, SL
通讯作者：
Delp, SL
影响因子：
2.4
作者：
Srinivasan, R. C.;Lungren, M. P.;Hughes, R. E.
通讯作者：
Hughes, R. E.
DOI：
10.1115/1.3426197
发表时间：
1978-01-01
影响因子：
1.7
作者：
CROWNINSHIELD, RD
通讯作者：
CROWNINSHIELD, RD
影响因子：
1.8
作者：
Mercer, Jennifer L.;Boninger, Michael;Cooper, Rory
通讯作者：
Cooper, Rory