Turkish Journal of Physical Medicine and Rehabilitation 2015 , Vol 61 , Num 4
Effects of isokinetic, isometric and aerobic exercise on clinical parameters and knee cartilage volume assessed by magnetic resonance imaging in patients with osteoarthritis
Esin Benli Küçük 1 ,Özden Özyemisci Taşkıran 2 ,Nil Tokgöz 3 ,Jale Meray 3
1 Niğde Bor Physical Medicine and Rehabilitation Hospital, Physical Medicine and Rehabilitation, Niğde, Turkey
2 Koç University, Department of Physical Medicine and Rehabilitation, İstanbul, Turkey
3 Gazi University, Department of Radiology, Ankara, Turkey
DOI : 10.5606/tftrd.2018.795 Objective: The aim of this study is evaluate the effect of various exercise protocols on pain, disability, physical function and articular cartilage in osteoarthritis.

Patients and methods: Forty-five women with primary knee osteoarthritis were divided into 3 study groups; isokinetic, aerobic and isometric exercise groups. Exercise protocols were performed 5 days a week for 4 weeks. Before and after the interventions, pain assessments, Western Ontario and McMaster Universities Osteoarthritis (WOMAC) and Lequesne Index were performed and isokinetic knee muscle strength measurements were also obtained. Patellar and femoral cartilage volumes were analyzed by magnetic resonance imaging.

Results: Pain, WOMAC, Lequesne scores and peak torque values of knee extension improved in all groups, with the largest improvement being observed in the isokinetic group. For knee flexion peak torque values, improvements were significant only in the isokinetic group at both velocities. No significant change in femoral cartilage volume was observed in any group after the interventions. However, patellar cartilage volume increase was significant in the isometric group (p=0.036).

Conclusions: A 4-week isokinetic, aerobic and isometric training program improved pain and functional capacity in patients with knee osteoarthritis. Isokinetic exercise led to increments in muscle strength with better maintenance of the quadriceps/hamstring ratio. Only isometric exercise increased patellar cartilage volume. Keywords : Cartilage, Knee Osteoarthritis, Exercise, Magnetic resonance imaging.