Gait asymmetry in patients with limb length discrepancy

Scandinavian Journal of Medicine and Science in Sports - Tập 14 Số 1 - Trang 49-56 - 2004
Jarmo Perttunen1, Esa Anttila2, Jerker Södergård2, Juhani Merikanto3, Paavo V. Komi1
1Neuromuscular Research Center, Department of Biology of Physical Activity, University of Jyväskylä, Jyväskylä, Finland
2Central Hospital of Central Finland, Jyväskylä, Finland
3University Hospital of Tampere, Tampere, Finland

Tóm tắt

Foot loading patterns and neuromuscular function of both limbs during walking were investigated on 25 patients with limb length discrepancy. Plantar pressures and 2‐D ground reaction forces were recorded simultaneously with electromyographic activities at two different walking speeds. Bilateral comparison indicated that moderate limb length discrepancies resulted in asymmetrical gait patterns. The duration of the stance phase was reduced in the short limb in both walking speeds. The vertical ground reaction force (F) in the push‐off phase was greater in the long limb both at normal (1.33 (SO, 0.05 BW) vs. 1.29 (SD, 0.09 BW)) (P=0.0027) and fast walking speed (1.55 (SD, 0.11) vs. 1.48 (SD, 0.15 BW)) (P=0.001). Peak plantar pressures were higher under the big toe in the long leg and the heel‐off occurred faster. The push‐off phase was initiated earlier in the short leg. The maximum isometric torque of the long limb was considerably greater (673 Nm vs. 239 Nm) (P=0.026). The results imply that the loading of the long limb is greater and the foot loading patterns shifted more to the forefoot in the long, limb to compensate walking disturbances caused by limb length discrepancies.

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Thông tin xuất bản

Scandinavian Journal of Medicine and Science in Sports

Tập 14 Số 1

49-56

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