Movement of the Knee in osteoarthritis: the use of electrogoniometry to assess function

C.M. Walker, C.M. Myles, R.W. Nutton, P.J. Rowe

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    Abstract

    We used electrogoniometers to measure the range of movement (ROM) of the knee during various activities, comparing 50 patients with osteoarthritis of the knee (OA) with 20 healthy age- and sex-matched subjects. The minimum and maximum joint angles and the ranges of excursion of the patient and control groups were tested for significant differences, using an unrelated Student's t-test with pooled variance. Knee flexion in patients with OA was significantly reduced during all activities (p < 0.05), but differences in knee extension were not significant except when patients negotiated stairs. We believe that this reduction in ROM is caused by inhibition due to pain when load-bearing. Static non-load-bearing measurements of the ROM poorly reflected the functional ROM, with a coefficient of determination (r2) of 0.59 in the patient group and 0.60 in the control group. Electrogoniometry of the ROM of the knee provides a reliable, accurate and objective measurement of knee function.
    Original languageEnglish
    Pages (from-to)195-198
    Number of pages3
    JournalJournal of Bone and Joint Surgery, British Volume
    Volume83
    Issue number2
    Publication statusPublished - 2001

    Keywords

    • electrogoniometry
    • osteoarthritis
    • knee
    • biomaterials
    • bioengineering

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