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Prosthet Orthot Int. 2013 Oct;37(5):396-403. doi: 10.1177/0309364612473501. Epub 2013 Jan 30.

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

Author information

1
Department of Physical Therapy, Miller School of Medicine, University of Miami, Coral Gables, FL, USA. agrawal.vr@gmail.com

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.

PMID:
23364890
DOI:
10.1177/0309364612473501
[Indexed for MEDLINE]
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