Lower Extremity Joint Contributions to Trunk Control During Walking in Persons with Transtibial Amputation.

ABSTRACT: Controlled trunk motion is crucial for balance and stability during walking. Persons with lower extremity amputation often exhibit abnormal trunk motion, yet underlying mechanisms are not well understood nor have optimal clinical interventions been established. The aim of this work was to characterize associations between altered lower extremity joint moments and altered trunk dynamics in persons with unilateral, transtibial amputation (TTA). Full-body gait data were collected from 10 persons with TTA and 10 uninjured persons walking overground (~1.4?m/s). Experimentally-measured trunk angular accelerations were decomposed into constituent accelerations caused by net joint moments throughout the body using an induced acceleration analysis. Results showed persons with TTA had similar ankle moment magnitude relative to uninjured persons (P?>?0.05), but greater trunk angular acceleration induced by the prosthetic ankle which acted to lean the trunk ipsilaterally (P?=?0.003). Additionally, persons with TTA had a reduced knee extensor moment relative to uninjured persons (P?

SUBMITTER: Yoder AJ 

PROVIDER: S-EPMC6706581 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature