Evaluation of a quasi-passive biarticular prosthesis to replicate gastrocnemius function in transtibial amputee gait.
Evaluation of a quasi-passive biarticular prosthesis to replicate gastrocnemius function in transtibial amputee gait.
复制标题
半被动双关节假体在经胫骨截肢者步态中复制腓肠肌功能的评价。
DOI：
10.1016/j.jbiomech.2021.110749
复制
发表时间：
2021-12-02
影响因子：
2.4
通讯作者：
Aubin, Patrick M.
中科院分区：
文献类型：
--
作者：
Willson, Andrea M.;Richburg, Chris A.;Anderson, Anthony J.;Muir, Brittney C.;Czerniecki, Joseph;Steele, Katherine M.;Aubin, Patrick M.
下肢截肢者经历步态障碍，部分原因是假肢的限制和缺乏功能性双关节腓肠肌（GAS）肌肉。储能假脚恢复比目鱼肌的功能，但不能恢复GAS。我们提出了一种经胫骨假体，实现了弹簧机制复制GAS。对7名单侧经胫骨截肢的参与者进行了原型双关节假体（BP）测试。参与者在装有运动捕捉的跑步机上行走，首先使用规定的假肢，然后在四种不同的弹簧刚度条件下使用BP。一个定制的OpenSim肌肉骨骼模型，包括BP，用于估计运动学，关节扭矩和肌肉力量。通过比较踝关节、膝关节和髋关节的截肢和完整角度来评估运动对称性。将BP膝关节和踝关节扭矩与完整GAS进行比较。最后，计算踝关节和膝关节处BP弹簧所做的功。运动对称性条件之间没有显著差异，表明BP的性能与规定的假体相似。当比较BP扭矩与完整GAS时，较高的弹簧刚度更好地接近峰值GAS扭矩，但这些峰值发生在步态周期的早期。BP弹簧对膝关节作正功，对踝关节作负功，并且随着BP弹簧刚度的增加，该功也增加。BP有可能改善与双关节GAS功能缺乏相关的截肢者步态补偿，这可能会减少他们的行走努力并改善生活质量。
Lower limb amputees experience gait impairments, in part due to limitations of prosthetic limbs and the lack of a functioning biarticular gastrocnemius (GAS) muscle. Energy storing prosthetic feet restore the function of the soleus, but not GAS. We propose a transtibial prosthesis that implements a spring mechanism to replicate the GAS. A prototype Biarticular Prosthesis (BP) was tested on seven participants with unilateral transtibial amputation. Participants walked on an instrumented treadmill with motion capture, first using their prescribed prosthesis, then with the BP in four different spring stiffness conditions. A custom OpenSim musculoskeletal model, including the BP, was used to estimate kinematics, joint torques, and muscle forces. Kinematic symmetry was evaluated by comparing the amputated and intact angles of the ankle, knee, and hip. The BP knee and ankle torques were compared to the intact GAS. Finally, work done by the BP spring was calculated at the ankle and knee. There were no significant differences between conditions in kinematic symmetry, indicating that the BP performs similarly to prescribed prostheses. When comparing the BP torques to intact GAS, higher spring stiffness better approximated peak GAS torques, but those peaks occurred earlier in the gait cycle. The BP spring did positive work on the knee joint and negative work on the ankle joint, and this work increased as BP spring stiffness increased. The BP has the potential to improve amputee gait compensations associated with the lack of biarticular GAS function, which may reduce their walking effort and improve quality of life.
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DOI：
10.1016/j.apmr.2004.04.034
发表时间：
2005-03-01
影响因子：
4.3
作者：
Norvell, DC;Czerniecki, JM;Weiss, NS
通讯作者：
Weiss, NS
影响因子：
2.4
作者：
Dingwell, JB;Marin, LC
通讯作者：
Marin, LC
影响因子：
4.3
作者：
Malcolm, Philippe;Galle, Samuel;De Clercq, Dirk
通讯作者：
De Clercq, Dirk
影响因子：
3.3
作者：
Russ, DW;Vandenborne, K;Binder-Macleod, SA
通讯作者：
Binder-Macleod, SA
影响因子：
2.4
作者：
Vrieling, A. H.;van Keeken, H. G.;Postema, K.
通讯作者：
Postema, K.