Article

Increases in spinal loading have been related to altered movements of the lower
back during gait among persons with lower limb amputation, movements which are
self-perceived by these individuals as contributing factors in the development of
low back pain. However, the relationships between altered trunk kinematics and
associated changes in lumbosacral kinetics during sit-to-stand and stand-to-sit
movements in this population have not yet been assessed. Three-dimensional
lumbosacral kinetics (joint moments and powers) were compared between 9 persons
with unilateral transfemoral amputation (wearing both a powered and passive knee
device), and 9 uninjured controls, performing five consecutive sit-to-stand and
stand-to-sit movements.
During sit-to-stand movements, lumbosacral joint moments
and powers were significantly larger among persons with transfemoral amputation
relative to uninjured controls. During stand-to-sit movements, lumbosacral joint
moments and powers were also significantly larger among persons with transfemoral
amputation relative to uninjured controls, with the exception of sagittal joint
powers. Minimal differences in kinetic measures were noted between the powered
and passive knee devices among persons with transfemoral amputation across all
conditions. Altered lumbosacral kinetics during sitting and standing movements,
important activities of daily living, may play a biomechanical role in the onset
and/or recurrence of low back pain or injury among persons with lower-limb amputation.
CI - Copyright (c) 2015 Elsevier B.V. All rights reserved.

Langue : ANGLAIS