Quantitative comparison of weight bearing characteristics for new transtibial amputees during early ambulatory training with and without using an audio biofeedback device

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Quantitative comparison of weight bearing characteristics for new transtibial amputees during early ambulatory training with and without using an audio biofeedback device

 

Author: Cheng, Chris T. K
Title: Quantitative comparison of weight bearing characteristics for new transtibial amputees during early ambulatory training with and without using an audio biofeedback device
Degree: M.Sc.
Year: 1997
Subject: Amputees -- Rehabilitation
Hong Kong Polytechnic University -- Dissertations
Department: Multi-disciplinary Studies
Pages: vii, 129 p. : ill. ; 30 cm
Language: English
InnoPac Record: http://library.polyu.edu.hk/record=b1410595
URI: http://theses.lib.polyu.edu.hk/handle/200/3846
Abstract: Clinically, close monitoring of the weight bearing progression for a new transtibial amputee during early postoperative stage is important for providing a suitable condition for stump recovery. Several monitoring methods have been currently proposed and used in clinical settings. These methods employed subjective criteria for determining the progression of the amount of weight bearing. These criteria include patient's subjective feedback and the practitioner's judgment. It is not uncommon that the practitioner may over-prescribe the amount of weight bearing. This may subsequently affect the rate of wound healing and even cause breakdown of the suture line. Although biofeedback device, in particular an audio biofeedback, was recommended, there was no quantitative information available regarding the effectiveness of such device in controlling the amount of weight bearing. The objective of this study was to compare quantitatively the weight bearing characteristics for new transtibial amputees during early postoperative ambulatory training with and without using an audio biofeedback. Six new transtibial amputees were recruited for this study. The amount of weight bearing during their early ambulatory training was prescribed according conventional guidelines. The subjects were required to replicate the amount of prescribed weight bearing using a bathroom scale method. The actual amount of weight bearing for subjects with and without using an audio biofeedback was continuously monitored using an instrumented tube adaptor and compared with the prescribed load. The results showed that the audio biofeedback could prevent the stump from being overloaded beyond the prescribed load. The ability of the subjects in replicating the prescribed load could be improved by using the audio biofeedback. It was recommended that an audio biofeedback device should be used as an adjunctive modality in postoperative management of amputee. It was also suggested that a weight bearing range, instead of a single load, should be prescribed. Moreover, possible strategies for setting the triggering level of the audio biofeedback were proposed. Further study was recommended to determine the proper weight bearing progression guidelines for new amputees during the early postoperative ambulatory training period.

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