Gholizadeh H, Baddour N, Dudek N, Lemaire E D
Department of Mechanical Engineering, University of Ottawa, Ottawa, Canada.
AMPOS Orthopaedics Inc, Ottawa, Canada.
Can Prosthet Orthot J. 2024 Jun 30;7(1):43034. doi: 10.33137/cpoj.v7i1.43034. eCollection 2024.
While waiting to receive a prosthesis, individuals with amputations could benefit from using a temporary training prosthesis to expedite the rehabilitation process and prepare them for subsequent walking with their prosthesis.
To design and build a temporary training prosthesis for people with a transtibial amputation.
Various temporary training prostheses were designed and simulated using SolidWorks software, followed by fabricating and testing multiple prototypes. Initial tests were conducted on five able bodied subjects without amputation to evaluate comfort, ensure the prototype functioned as intended, and to refine the design. The final prototype design had no weight-bearing on the residual limb end and required the person to wear a shrinker or silicone liner.
SolidWorks simulations showed that the device could tolerate up to 200 kg load. Subjective feedback indicated that body weight is primarily supported by the thigh section, while partially utilizing the patellar tendon and tibial flares. The thigh section can be shifted 5 cm up or down and 2.5 cm to the front or back from the knee joint center (to enhance knee stability or function). Additionally, the thigh angle can be adjusted to 0, 5, 10, or 15 degrees to accommodate hip flexion contracture. The shank section width is adjustable and can be shifted up or down based on the residual limb shape. All five able-bodied participants successfully walked with the non-amputee version of the temporary prosthesis prototype and the device withstood walking, sitting, and standing loads.
An adjustable temporary training prosthesis was successfully designed, and pilot tested by five able-bodied individuals. Future testing will involve five experienced prosthetic users before conducting trials with individuals with a new transtibial amputation.
在等待接受假肢期间，截肢者使用临时训练假肢可能有助于加快康复进程，并为后续使用假肢行走做好准备。
为胫骨截肢者设计并制造一种临时训练假肢。
使用SolidWorks软件设计并模拟了各种临时训练假肢，随后制造并测试了多个原型。首先在五名非截肢的健全受试者身上进行测试，以评估舒适度、确保原型按预期运行并优化设计。最终的原型设计中，残肢末端不负重，要求使用者佩戴收缩套或硅胶内衬。
SolidWorks模拟显示该装置可承受高达200千克的负荷。主观反馈表明，体重主要由大腿部分支撑，同时部分利用髌腱和胫骨髁。大腿部分可在膝关节中心上方或下方移动5厘米，在膝关节中心前方或后方移动2.5厘米（以增强膝关节稳定性或功能）。此外，大腿角度可调整为0度、5度、10度或15度，以适应髋关节屈曲挛缩。小腿部分宽度可调，可根据残肢形状上下移动。所有五名健全参与者都成功地使用了非截肢版临时假肢原型行走，该装置经受住了行走、坐立和站立时的负荷。
成功设计了一种可调节的临时训练假肢，并由五名健全个体进行了初步测试。未来的测试将在五名经验丰富的假肢使用者身上进行，然后再对新的胫骨截肢者进行试验。
