The Role of the Quadriceps in Controlling Impulsive Forces around Heel Strike

Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine - Tập 204 Số 1 - Trang 21-28 - 1990
R J Jefferson1, James J. Collins1, Michael W. Whittle1, Eric L. Radin2, John O’Connor3
1Oxford Orthopaedic Engineering Centre, Nuffield Orthopaedic Centre, Headington, Oxford
2Department of Orthopaedic Surgery, West Virginia University School of Medicine, Morgantown, West Virginia, USA
3Department of Engineering Science, University of Oxford

Tóm tắt

The damaging effect of transient loads on joints has been observed in vitro and in vivo, and may be an aetiological factor in osteoarthrosis. The events around heel strike, when the velocity of the foot is brought rapidly to zero, may be a source of such loads in normal activity. By modifying the rate at which the limb descends to the ground, quadriceps action influences the magnitude of the heel strike transient. Experiments were carried out to analyse the occurrence of these transients, and a two-dimensional mathematical model of the knee joint and lower leg was used to calculate the forces developed at the knee in response to them. Paralysis of the quadriceps resulted in a large increase in the heel strike transient.

Từ khóa


Tài liệu tham khảo

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Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine

Tập 204 Số 1

21-28

Thông tin tác giả