Department of Biomechanics, Poznan University of Physical Education, Poznań, Poland.
Kinesiology Lab, The Children's Memorial Health Institute, Warsaw, Poland.
Acta Bioeng Biomech. 2020;22(1):111-117.
The main purpose was to determine the values of spatio-temporal parameters and ground reaction forces during the swingthrough crutch gait.
Eighteen male patients with unilateral injury within the foot, ankle or shank (age: 25.4 ± 7.7 years, body height: 1.79 ± 0.06 m, body mass: 76.1 ± 11.5 kg) participated in the study. In the experiment, 6-camera optoelectronic motion capture system and force platform were used. The measurements of spatio-temporal parameters and ground reaction force (GRF) were performed for uninjured lower extremity (ULE), crutch on the ULE side (CrU) and crutch on the injured lower extremity side (CrI).
Analysis demonstrated a significantly longer stance phase and a significantly shorter swing phase for ULE than crutches ( p < 0.05), and a significantly longer first, compared to the second, double support phase ( p < 0.05). Comparisons showed also significantly higher maximum values of the vertical GRF and extreme values of the horizontal antero-posterior GRF for ULE than crutches ( p < 0.05) as well as for CrI than CrU ( p < 0.05).
The present study provides biomechanical data related to the spatio-temporal parameters and GRFs for the swing-through crutch gait in patients with the lower extremity injuries.
主要目的是确定摆动式拐杖步态中时空参数和地面反作用力的数值。
18 名单侧足部、踝部或小腿受伤的男性患者（年龄：25.4±7.7 岁，身高：1.79±0.06 m，体重：76.1±11.5 kg）参与了这项研究。实验中使用了 6 摄像机光电运动捕捉系统和力台。对未受伤下肢（ULE）、受伤下肢侧拐杖（CrU）和拐杖侧受伤下肢（CrI）的时空参数和地面反作用力（GRF）进行了测量。
分析表明，与拐杖相比，ULE 的站立相明显更长，摆动相明显更短（p<0.05），并且第一双支撑相明显长于第二双支撑相（p<0.05）。比较还表明，与拐杖相比，ULE 的垂直 GRF 最大值和水平前后 GRF 的极值更高（p<0.05），与 CrI 相比，CrU 也更高（p<0.05）。
本研究提供了与下肢损伤患者摆动式拐杖步态时空参数和 GRF 相关的生物力学数据。
