触觉振动反馈系统对单侧小腿假肢穿戴者平衡及行走功能的影响

Effects of Tactile Vibration Feedback System on Balance Function and Walking Ability of Unilateral Transtibial Amputees with Prostheses

目的观察触觉振动反馈系统对单侧小腿假肢穿戴者的平衡和行走功能的影响。方法 2019年10月至2020年11月,选取本院门诊和住院治疗的小腿截肢后穿戴假肢者11例,受试者佩戴本科自行研制的触觉振动反馈系统装置,进行日常活动3 h。分别于佩戴前和日常活动后采用Tinetti平衡与步态量表(POMA)、步态分析和室外1000 m复杂路面行走测试对受试者进行评定。结果与穿戴前相比,受试者POMA的平衡评分升高(Z=-2.264, P <0.05),步态评分和总分显著升高(|t|>6.249, P <0.001);步态分析中,受试者患侧肢体步长改善,双侧肢体步长时间和双支撑相时间缩短,行走速度提高(|t|> 2.250,|Z|> 2.756, P <0.05);室外1000 m复杂路面行走测试显示,受试者步数、耗能和用时均降低(|t|> 2.412,|Z|> 2.045, P <0.05)。所有受试者均完成试验,未出现不适。结论本触觉振动反馈系统可安全、有效地改善小腿假肢穿戴者平衡和行走功能。

Objective To observe the effect of the tactile vibration feedback system on the balance and walking function of the unilateral transitional amputees with prostheses.Methods From October,2019 to November 2020,eleven unilateral transtibial amputees with prostheses were selected from our hospital.They performed daily activities for three hours wearing tactile vibration feedback system designed by our department.The patients were evaluated by Performance Oriented Mobility Assessment(POMA),gait analysis and outdoor 1000 meters complex road walking test before and after treatment.Results The balance score of the POMA improved(Z=-2.264,P<0.05),the gait score and total score of the POMA increased significantly(|t|>6.249,P<0.001)after treatment.Gait analysis showed that the step length of the affected side improved,the bilateral step time and double support phase shortened,and the walking speed increased(|t|>2.250,|Z|>2.756,P<0.05)after installation.The outdoor 1000 meters complex road walking test showed that the total steps,energy consumption and time decreased(|t|>2.412,|Z|>2.045,P<0.05).All the patients finished the trail,and no discomfort appeared.Conclusion The tactile vibration feedback system could safely and effectively improve the balance and walking function of the unilateral transtibial amputees with prostheses.