Elsevier

Clinical Biomechanics

Volume 13, Issue 3, April 1998, Pages 176-181
Clinical Biomechanics

Paper
Rising from chair after total knee arthroplasty

https://doi.org/10.1016/S0268-0033(97)00039-9Get rights and content

Abstract

Objective. This study was performed to determine the biomechanics of chair rising by patients after successful total knee arthroplasty (TKA).

Design. Relative full body joint positions and ground reaction forces were measured by a motion analysis system and two force plates.

Background. Chair-rise produces increased joint forces and moments compared with level walking, and it is difficult to rise from a chair for most patients with neurological or musculoskeletal abnormalities. Previous motion studies of patients after TKA had focused on gait analysis and stair climbing.

Methods. Twelve patients after successful TKA were studied while performing sit-to-stand transfer from a chair at four chair heights without the use of arm rests. The results of this group were compared with those of 12 healthy elderly subjects and 14 osteoarthritic patients before TKA.

Results. Compared with the healthy elderly group during chair rising, the patients after TKA had increased horizontal mass center velocity, increased vertical hip joint forces, the maximum sound-side hip extension moment, but decreased vertical mass center velocity.

Conclusion. Compensatory mechanisms of chair rising were adopted by the arthritic patients before and after TKA. The mechanisms include increased forward body bending and more weight shift on the sound side.

References (12)

  • M. Ellis et al.

    Forces in the knee joint whilst rising from a seated position

    J Biomedical Eng

    (1984)
  • M.W. Rodosky et al.

    The influence of chair height on lower limb mechanics during rising

    J Orthop Res

    (1989)
  • K.A. Lai et al.

    Biomechanics of chair rising

    Chinese J Med Biolog Eng

    (1992)
  • T.Y. Liao

    Biomechanics of chair rising for patients with gonarthrosis of the knee

  • R.G. Burdete et al.

    Biomechanical comparison of rising from two types of chairs

    Physical Therapy

    (1985)
  • B.B. Seedhom et al.

    Knee forces during the activity of getting out of a chair with and without the use of arms

    Biomedical Eng

    (1976)
There are more references available in the full text version of this article.

Cited by (0)

View full text