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Mobility and perceived function after total knee arthroplasty.

Mark D Rossi1, Scott Hasson, Mohamed Kohia

  • 1Department of Physical Therapy, Florida International University, Miami, Florida 33199, USA.

The Journal of Arthroplasty
|February 1, 2006
PubMed
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Total knee arthroplasty (TKA) patients showed slower mobility on the Timed Up and Go (TUG) test compared to controls. TUG performance was moderately linked to self-reported physical function after TKA.

Area of Science:

  • Orthopedics
  • Rehabilitation Science
  • Gerontology

Background:

  • Total knee arthroplasty (TKA) is a common procedure for severe knee osteoarthritis.
  • Limited understanding exists regarding the relationship between post-TKA mobility and patient-reported outcomes.
  • Assessing mobility and function is crucial for optimizing recovery and quality of life after TKA.

Purpose of the Study:

  • To compare Timed Up and Go (TUG) test performance between individuals post-TKA and age-sex-matched controls.
  • To explore the correlations between TUG-measured mobility and self-reported physical function using the Western Ontario McMaster Universities Osteoarthritis Index (WOMI) in the TKA group.

Main Methods:

  • A case-control study design was employed.
  • Participants included individuals (n=11) who underwent TKA and age-sex-matched healthy controls (n=11).

Related Experiment Videos

  • Mobility was assessed using the Timed Up and Go (TUG) test. Perceived pain, stiffness, and physical function were measured using the Western Ontario McMaster Universities Osteoarthritis Index (WOMSI).

    • Main Results:

    • The TKA group demonstrated significantly slower TUG test times, completing the test 28% slower than controls (P < .05).
    • Individuals post-TKA reported difficulties with challenging tasks, indicating functional limitations.
    • The TUG test showed moderate correlations with the physical function subscale (r=0.63) and the overall WOMSI score (r=0.59) in the TKA group.

    Conclusions:

    • Individuals post-TKA exhibit impaired mobility compared to healthy controls, as evidenced by TUG test performance.
    • Mobility, assessed by the TUG test, is moderately associated with perceived physical function and overall joint status in patients after TKA.
    • These findings highlight the importance of addressing mobility deficits to improve functional outcomes following total knee arthroplasty.