Influence of gait training and prosthetic foot category on external work symmetry during unilateral transtibial amputee gait.

Abstract:

BACKGROUND:Prosthetic foot prescription guidelines lack scientific evidence and are concurrent with an amputee's concurrent with an amputee's Medicare Functional Classification Level (K-Level) and categorization of prosthetic feet. OBJECTIVE:To evaluate the influence of gait training and four categories of prosthetic feet (K1, K2, K3, and microprocessor ankle/foot) on Symmetry in External Work for K-Level-2 and K-Level-3 unilateral transtibial amputees. DESIGN:Randomized repeated-measures trial. METHODS:Five K-Level-2 and five K-Level-3 subjects were tested in their existing prosthesis during Session 1 and again in Session 2, following 2 weeks of standardized gait training. In Sessions 3-6, subjects were tested using a study socket and one of four randomized test feet. There was an accommodation period of 10-14 days with each foot. Symmetry in External Work for positive and negative work was calculated at each session to determine symmetry of gait dynamics between limbs at self-selected walking speeds. RESULTS:K-Level-2 subjects had significantly higher negative work symmetry with the K3 foot, compared to K1/K2 feet. For both subject groups, gait training had a greater impact on positive work symmetry than test feet. CONCLUSION:Higher work symmetry is possible for K-Level-2 amputees who are trained to take advantage of K3 prosthetic feet designs. There exists a need for an objective determinant for categorizing and prescribing prosthetic feet.

journal_name

Prosthet Orthot Int

authors

Agrawal V,Gailey R,O'Toole C,Gaunaurd I,Finnieston A

doi

10.1177/0309364612473501

subject

Has Abstract

pub_date

2013-10-01 00:00:00

pages

396-403

issue

5

eissn

0309-3646

issn

1746-1553

pii

0309364612473501

journal_volume

37

pub_type

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