Article

The Sit-To-Stand (STS) transition is a mechanically demanding task that may pose
particular challenges for individuals with lower limb osteoarthritis (OA).
Biomechanical features of STS have been investigated in patients with OA, but not
in patients with early stage hip OA. The purpose of this study was to explore
inter-limb weight-bearing asymmetries (WBA) and selected kinematic and kinetic
variables during STS in patients with mild-to-moderate hip OA compared with healthy controls. Twenty-one hip OA patients and 23 controls were included in the
study. Sagittal and frontal plane kinematic and kinetic data were collected using
an eight-camera motion analysis system synchronized with two force plates
embedded in the floor. There were no distinctive biomechanical alterations in
sagittal or frontal plane kinematics or kinetics, movement time, or time to reach
peak ground reaction force (GRF) in hip OA patients compared with controls.
However, the hip OA patients revealed a distinct pattern of WBA compared with the
controls, in unloading their involved limb by 18.4% at peak GRF. These findings
indicate that patients with early stage hip OA are not yet forced into a
stereotypical movement strategy for STS; however, the observed pattern of WBA
requires clinical attention.
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Langue : ANGLAIS