Parziale J R, Daniels J D
Brown University Program in Medicine, Department of Rehabilitation Medicine, Rhode Island Hospital, Providence 02903.
Am J Phys Med Rehabil. 1989 Aug;68(4):192-5. doi: 10.1097/00002060-198908000-00008.
Crutches with the extension post replaced by a spring-loaded post were compared with standard axillary crutches with respect to stresses developed during the stance phase of locomotion. Seven subjects were tested using both standard and spring-loaded crutches. The crutches were fitted with strain gauges; crutch length and grip location were adjusted for each subject using accepted standards. Subjects ambulated using a three-point "swing-through" gait pattern while strain gauge data were recorded. Spring-loaded axillary crutches had 22% smaller shock waves upon initial contact and 24% smaller peak stresses (P less than 0.05). Subjects reported improved endurance and comfort with the spring-loaded crutch. Although larger trials will be necessary, these initial results show promise in reduction of impact-loading of the upper extremity of patients using axillary crutches.
将伸缩杆替换为弹簧加载杆的拐杖与标准腋下拐杖在行走支撑阶段所产生的应力方面进行了比较。七名受试者分别使用标准拐杖和弹簧加载拐杖进行了测试。拐杖安装了应变仪；根据公认标准为每个受试者调整了拐杖长度和握把位置。受试者采用三点“摆动通过”步态模式行走，同时记录应变仪数据。弹簧加载腋下拐杖在初始接触时的冲击波小22%，峰值应力小24%（P<0.05）。受试者报告称使用弹簧加载拐杖时耐力和舒适度有所提高。尽管需要进行更大规模的试验，但这些初步结果表明，在减少使用腋下拐杖患者上肢的冲击负荷方面具有前景。
