Effects of heel lifting on transtibial amputee gait before and after treadmill walking: a case study.

Abstract:

BACKGROUND:Prosthetic alignment is usually unchanged once optimized. However, a previous study indicated that long-distance walking significantly altered gait patterns, suggesting some alignment adjustments after walking are required. This study investigated the effects of alignment changes (by inserting a heel lift) on gait of a transtibial amputee before and after treadmill walking. CASE DESCRIPTION AND METHODS:The subject walked, without heel lifts, on a treadmill until perception of fatigue. Gait changes upon heel lifting at the prosthetic side were studied before and after the treadmill walking FINDINGS AND OUTCOMES:For this subject before the treadmill walking, heel lifting induced drop-off with increased prosthetic-side knee flexion at mid-stance and pre-swing. The sound limb outreached to stabilize the gait. After the treadmill walking, the same heel lift did not induce drop-off. It reduced the plantar flexor power generation, potentially delaying its fatigue. CONCLUSION:After walking prosthetic-side heel lifting could be beneficial. CLINICAL RELEVANCE:Many lower-limb amputees have difficulties in long-distance walking due to muscle fatigue. This case study proposes that appropriate alignment changes after some walking potentially relieve fatigue and encourage them to walk longer distances.

journal_name

Prosthet Orthot Int

authors

Yeung LF,Leung AK,Zhang M,Lee WC

doi

10.1177/0309364612461521

subject

Has Abstract

pub_date

2013-08-01 00:00:00

pages

317-23

issue

4

eissn

0309-3646

issn

1746-1553

pii

0309364612461521

journal_volume

37

pub_type

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