Article

Patients with unilateral dysvascular transtibial amputation (TTA) have a higher
risk of developing low back pain than their healthy counterparts, which may be
related to movement compensations used in the absence of ankle function.
Assessing components of segmental angular momentum provides a unique framework to
identify and interpret these movement compensations alongside traditional
observational analyses.
Angular momentum separation indicates two components of
total angular momentum:
(1) transfer momentum and
(2) rotational momentum. The
objective of this investigation was to assess movement compensations in patients
with dysvascular TTA, patients with diabetes mellitus (DM), and healthy controls
(HC) by examining patterns of generating and arresting trunk and pelvis segmental
angular momenta during gait. We hypothesized that all groups would demonstrate
similar patterns of generating/arresting total momentum and transfer momentum in
the trunk and pelvis in reference to the groups (patients with DM and HC). We
also hypothesized that patients with amputation would demonstrate different
(larger) patterns of generating/arresting rotational angular momentum in the
trunk. Patients with amputation demonstrated differences in trunk and pelvis
transfer angular momentum in the sagittal and transverse planes in comparison to
the reference groups, which indicates postural compensations adopted during
walking. However, patients with amputation demonstrated larger patterns of
generating and arresting of trunk and pelvis rotational angular momentum in
comparison to the reference groups. These segmental rotational angular momentum
patterns correspond with high eccentric muscle demands needed to arrest the
angular momentum, and may lead to consequential long-term effects such as low
back pain.
CI - Copyright (c) 2016 Elsevier B.V. All rights reserved.

Langue : ANGLAIS