Lu C L, Yu B, Basford J R, Johnson M E, An K N
Orthopedic Biomechanics Laboratory, Mayo Clinic, Rochester, MN 55905, USA.
J Rehabil Res Dev. 1997 Jan;34(1):91-100.
The purpose of this study was to investigate the influence of cane length on the standing and walking stability of stroke patients. Ten stroke patients were used as subjects and evaluated by using two different cane lengths based on the measurements of the distance from distal wrist crease to the ground (WC cane), and the distance from greater trochanter to ground (GT cane). Force plates were used to determine the center of pressure (COP). The maximum sways, the total travel distances, and the mean travel speeds of the COP were analyzed for each patient standing and walking with and without canes. It was found that the total travel distance and the mean travel speed of the COP in the medial-lateral (M-L) direction were significantly lower when standing with a cane than when standing without one. It was also found that the values of these parameters and the maximum sways of the COP in both anterior-posterior (A-P) and M-L directions were significantly lower when standing with the WC cane than when standing with the GT cane. No significant difference was found in the maximum M-L sway, the total travel distance, and the mean travel speed of the COP in walking. These results suggest that the standing stability of stroke patients is improved by using canes, especially by using a WC cane, although no significant influence of using canes on the walking stability was detected. Based on the results of this study, the vertical distance from the wrist crease to ground is recommended as the appropriate cane length for stroke patients.
本研究的目的是调查手杖长度对中风患者站立和行走稳定性的影响。选取10名中风患者作为研究对象，根据腕部远端横纹至地面的距离（WC手杖）和大转子至地面的距离（GT手杖）测量结果，使用两种不同长度的手杖对患者进行评估。使用测力台确定压力中心（COP）。分析了每位患者在使用和不使用手杖的情况下站立和行走时COP的最大摆动幅度、总移动距离和平均移动速度。结果发现，使用手杖站立时，COP在内外侧（M-L）方向的总移动距离和平均移动速度显著低于不使用手杖时。还发现，使用WC手杖站立时，这些参数的值以及COP在前后（A-P）和M-L方向的最大摆动幅度均显著低于使用GT手杖时。在行走时，COP的最大M-L摆动幅度、总移动距离和平均移动速度未发现显著差异。这些结果表明，使用手杖，尤其是使用WC手杖，可改善中风患者的站立稳定性，尽管未检测到使用手杖对行走稳定性有显著影响。基于本研究结果，建议将腕部横纹至地面的垂直距离作为中风患者合适的手杖长度。
