Although weight transfer is an important component of gait rehabilitation, the biomechanical strategy underlying the vertical ground reaction force loading/unloading in individuals with unilateral transfemoral amputation between intact and prosthetic limbs remains unclear. We investigated weight transfer between limbs at different walking speeds in 15 individuals with unilateral transfemoral amputation and 15 individuals without amputation as controls, who walked on an instrumented treadmill. The normalized unloading and loading rates were calculated as the slope of decay and rise phase of the vertical ground reaction force, respectively. We performed linear regression analyses for trailing limb’s unloading rate and leading limb’s loading rate between the prosthetic, intact, and control limbs. While loading rate increased with walking speed in all three limbs, the greatest increase was observed in the intact limb. In contrast to the other limbs, the prosthetic limb unloading rate was relatively insensitive to speed changes. Consequently, the regression line between trailing prosthetic and leading intact limbs deviated from other relationships. These results suggest that weight transfer is varied whether the leading or trailing limb is the prosthetic or intact side, and the loading rate of the leading limb is partially affected by the unloading rate of the contralateral trailing limb.

尽管重量转移是步态康复的重要组成部分，但在完整肢体和假肢之间进行单侧经股截肢的个体中垂直地面反作用力加载/卸载的生物力学策略仍不清楚。我们调查了 15 名单侧经股截肢患者和 15 名未截肢患者在装有仪器的跑步机上行走时以不同步行速度在四肢之间进行的重量转移。归一化卸载和加载速率分别计算为垂直地面反作用力的衰减斜率和上升阶段。我们对假肢、完整肢和控制肢之间的后肢卸载率和前肢加载率进行了线性回归分析。虽然负荷率随着所有三个肢体的行走速度而增加，但在完整的肢体中观察到最大的增加。与其他肢体相比，假肢卸载率对速度变化相对不敏感。因此，尾部假肢和前部完整肢体之间的回归线偏离了其他关系。这些结果表明，无论前肢或后肢是假肢还是完好侧，重量转移都是不同的，并且前肢的加载率部分受对侧后肢卸载率的影响。尾部假肢和前部完整肢体之间的回归线偏离了其他关系。这些结果表明，无论前肢或后肢是假肢还是完好侧，重量转移都是不同的，并且前肢的加载率部分受对侧后肢卸载率的影响。尾部假肢和前部完整肢体之间的回归线偏离了其他关系。这些结果表明，无论前肢或后肢是假肢还是完好侧，重量转移都是不同的，并且前肢的加载率部分受对侧后肢卸载率的影响。