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- Title
Anticipatory Postural Adjustments During Lateral Step Motion in Patients With Hip Osteoarthritis.
- Authors
Tateuchi, Hiroshige; Ichihashi, Noriaki; Shinya, Masahiro; Oda, Shingo
- Abstract
Patients with hip osteoarthritis (OA) have difficulty with mediolateral postural control. Since the symptom of hip OA includes joint pain, which mostly occurs upon initial movement, patients with hip OA might have disabling problems with movement initiation. This study aimed to identify the movement strategy during the anticipatory postural adjustments in the lateral step motion in patients with hip OA. We studied 18 female subjects with unilateral hip OA and 10 healthy subjects, and measured temporal, kinetic, and kinematic variables. Patients with hip OA required a longer duration of anticipation phase than the control subjects, the total duration of lateral stepping was not different between the groups. Displacement of the center of mass to the supporting (affected) side during the anticipation phase was not different between the two groups. These findings suggest that, in patients with hip OA, the center of mass slowly moved to the affected side. Furthermore, patients with hip OA showed greater shift of the trunk to the supporting side than did the control subjects. These movement characteristics might contribute to the achievement of both protection of the affected hip joint and quickness in the subsequent lateral step in patients with hip OA.
- Subjects
ANALYSIS of variance; BODY weight; COMPUTER software; STATISTICAL correlation; DYNAMICS; GAIT in humans; KINEMATICS; OSTEOARTHRITIS; PEOPLE with disabilities; POSTURE; REACTION time; RESEARCH funding; STATURE; DATA analysis; CASE-control method; SYMPTOMS
- Publication
Journal of Applied Biomechanics, 2011, Vol 27, Issue 1, p32
- ISSN
1065-8483
- Publication type
Article
- DOI
10.1123/jab.27.1.32