Accession Number:



A Pilot Clinical Trial to Assess the Effect of Transfemoral Socket Design on Hip Muscle Function

Descriptive Note:

[Technical Report, Annual Report]

Corporate Author:


Personal Author(s):

Report Date:


Pagination or Media Count:



The purpose of the proposed research is to evaluate how prosthetic socket design influences hip muscle function in transfemoral prosthesis users. The scope of the proposed research includes evaluating hip muscle function and its contribution to balance and mobility in unilateral lower limb prosthesis users, and testing whether walking with a sub-ischial socket alters hip muscle function in unilateral lower limb prosthesis users. This is to be accomplished by conducting cross-sectional aim 1 and longitudinal aim 2 studies to evaluate hip muscle function in lower limb prosthesis users aim 1, and test whether it can be influenced by socket design in transfemoral prosthesis users aim 2. To date we have made completed recruitment, enrollment, and data collection for aim 1 14 transfemoral, 14 transtibial, and 28 age- and sex-matched controls. We have recruited and enrolled 6 of 8 transfemoral prosthesis users for aim 2. Prospective data collection baseline, follow up 1 and follow up 2 has been completed for 1 participant. Two other participants have completed baseline and follow up 1, with follow up 2 scheduled for Dec 2021. The remaining three participants have completed baseline testing and are scheduled for follow up 1 and 2 prior to the end of the NCE. Dissemination efforts have resulted in the publication of one manuscript Hewson et al., 2020, and the submission of a conference abstract Dent et al., 2020. Two other manuscripts are in preparation. Notable findings from this research to date include ithe normalization of hip muscle strength by appropriate body parameters alters our understanding of its relationship to balance ability, and reveals between limb differences, and ii in contrast to popular opinion, residual limb hip muscles are not weaker, but rather stronger than intact hip muscles in unilateral transfemoral prosthesis users.

Subject Categories:

  • Anatomy and Physiology
  • Medicine and Medical Research

Distribution Statement:

[A, Approved For Public Release]