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Muscle recovery following knee arthroplasty

Investigators assessed changes in quadriceps and hamstring strength and flexibility through 12 months following total knee arthroplasty.

  • By

  • Kathryn Wighton

  • September 23, 2026

  • 3 min

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  • 1

    Quadriceps and hamstring strength and flexibility decline immediately after total knee arthroplasty.

  • 2

    Strength improvements occur over 1 year, but deficits persist compared to healthy controls.

  • 3

    A study involved 77 patients aged 50 to 80 with severe knee osteoarthritis undergoing total knee arthroplasty.

  • 4

    Mean quadriceps strength increased from 7 lbs at 6 weeks to 43 lbs at 12 months, remaining lower than controls.

  • 5

    The study noted potential biases and limitations, including attrition and lack of blinded outcome assessment.

Original Source(s)

Muscle recovery following knee arthroplasty

  • by Kathryn Wighton

  • September 23, 2026

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