Article

People with severe degenerative conditions, such as osteoarthritis (OA), have
been shown to have altered movement patterns during sit-to-stand. However it
remains unclear whether such alterations exist in people with early OA, in the
absence of pain. This study aimed to determine if a novel seat could be used to
discriminate people with early OA compared with controls. The sit-to-stand task
was performed by 20 people with early medial knee OA and 20 age and
gender-matched control subjects, using an instrumented seat. OA subjects showed
altered weight distribution in the transition phase from sit to stand, in that
they placed more load through their unaffected side. Task duration was
significantly longer for OA subjects, and ground reaction force integrals were
significantly greater for both legs of OA subjects. OA subjects had significantly
higher knee flexion and adduction moments in their unaffected compared with
affected side. This study has demonstrated that a novel instrumented seat can be
used to discriminate people with early medial knee OA during the sit-to-stand
activity. These results may be relevant for early interventions to delay or
prevent changes in muscle function of the affected limb as well as contralateral
knee or hip osteoarthritis in these patients.
CI - Copyright (c) 2013 Elsevier B.V. All rights reserved.

Langue : ANGLAIS