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Journal of the Korean Academy of Rehabilitation Medicine 1994;18(2):17.
Isokinetic Test in Patients with Degenerative Joint Disease of Knee
Tai Ryoon Han, M.D. , Moon Suk Bang, M.D.
Department of Rehabilitation Medicine, Seoul National University College of Medicine
슬관절 퇴행성 관절염 환자의 등속성 근력 평가
한태륜, 방문석
서울대학교 의과대학 재활의학교실

This study was done to determine the imbalance of weakness between knee flexor and extensor by isokinetic test in degenerative joint disease (DJD), the efficacy of quadriceps isometric strengthening and to know whether the result of isokinetic test correlated with radiologic grade, visual analogue scale (VAS), duration of pain or body mass index.

51 patients with degenerative joint disease of knee who met the clinical criteria of American Rheumatology Association and the Kellgren's radiologic grade II or more, were evaluated with Cybex II+ isokinetic dynamometer. VAS, duration of pain and body mass index of them were measured, too.

In isokinetic test result, the torque values were significantly lower in DJD patients than normal and the hamstring to quadriceps ratio (H/Q ratio) was significantly higher in DJD patients than normal; 62.3% vs. 51.6% in 6th decade. 5 of 7th decade and 4 of 8th decade showed no measurable torque value at angular velocity 180 degree/sec. Radiologic grade, VAS and duration of pain showed no significant correlation with the result of isokinetic testing.

In conclusion, we think that, in DJD patients strengthening of knee musculature, especially knee extensor should be emphasized. In 7th decade or more, it would be better to measure the isokinetic torque value at low angular velocity of measure the isometric torque for measuring the strength of knee musculature.

Key Words: Degenerative joint disease of knee, Isokinetic test, Hamstring to quadriceps ratio (H/Q ratio)


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