Archives of Physical Medicine and Rehabilitation
Volume 90, Issue 11 , Pages 1821-1828 , November 2009

Association of Dynamic Joint Power With Functional Limitations in Older Adults With Symptomatic Knee Osteoarthritis

Presented to the Association of Academic Physiatrists, 2008, Anaheim, CA, and the American Geriatrics Society, Washington, DC.

  • Neil A. Segal, MD, MS

      Affiliations

    • Department of Orthopaedics and Rehabilitation, The University of Iowa, Iowa City, IA
    • Corresponding Author InformationReprint requests to Neil A. Segal, MD, MS, Dept of Orthopaedics and Rehabilitation, The University of Iowa, 200 Hawkins Dr, 0728 JPP, Iowa City, IA 52242-1088
    • ,
  • H. John Yack, PT, PhD

      Affiliations

    • Graduate Program in Physical Therapy and Rehabilitation Sciences, The University of Iowa, Iowa City, IA
    • ,
  • Morgan Brubaker, BA

      Affiliations

    • Department of Orthopaedics and Rehabilitation, The University of Iowa, Iowa City, IA
    • ,
  • James C. Torner, PhD

      Affiliations

    • Department of Epidemiology, The University of Iowa, Iowa City, IA
    • ,
  • Robert Wallace, MS, MD

      Affiliations

    • Department of Epidemiology, The University of Iowa, Iowa City, IA

  • Image Result

    Phases and key events of gait by percent of gait cycle.

    Phases and key events of gait by percent of gait cycle.

  • Image Result

    Example gait data for women. (A) High-functioning person with greater negative power at the knee during preswing and initial swing and less negative power at the end of swing phase. (B) Low-functionin

    Example gait data for women. (A) High-functioning person with greater negative power at the knee during preswing and initial swing and less negative power at the end of swing phase. (B) Low-functioning person generating less positive power during midstance (typically associated with moving the pelvis towards a more neutral position).

  • Image Result
    Example gait data for men; same persons in both plates. (A) Low-functioning person demonstrating more of a hip strategy in which greater positive power is generated at the hip to compensate for decrea

    Example gait data for men; same persons in both plates. (A) Low-functioning person demonstrating more of a hip strategy in which greater positive power is generated at the hip to compensate for decreased power generation at the ankle (B).

 Supported by a 2006 Dennis W. Jahnigen Career Development Scholars Award through the American Geriatrics Society and by the following NIH/NIA grants: U01-AG-18832, U01-AG-18820, U01-AG-18947, and U01-AG-19069.

 No commercial party having a direct financial interest in the results of the research supporting this article has or will confer a benefit on the authors or on any organization with which the authors are associated.

PII: S0003-9993(09)00644-3

doi: 10.1016/j.apmr.2009.07.009

Archives of Physical Medicine and Rehabilitation
Volume 90, Issue 11 , Pages 1821-1828 , November 2009

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