Assessment of Isokinetic Muscle performance of Hip Abductors in Knee Osteoarthritis. | ||
| Benha International Journal of Physical Therapy | ||
| Volume 3, Issue 2, December 2025, Pages 285-293 PDF (910.03 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/bijpt.2025.431119.1122 | ||
| Authors | ||
| Ahmed Farag Mohamed* 1; Salwa F Abd El Magid2; Nesreen F Mahmoud3 | ||
| 1department of Musculoskeletal disorders and its surgery, Faculty of Physical Therapy, Cairo University, Egypt | ||
| 2Professor at department of Musculoskeletal disorders and its surgery, Faculty of Physical Therapy, Cairo University, Egypt | ||
| 3Lecturer at department of Musculoskeletal disorders and its surgery, Faculty of Physical Therapy, Cairo University, Egypt | ||
| Abstract | ||
| Background: Knee osteoarthritis (OA) is characterized by the progressive degeneration of articular cartilage. Emerging evidence suggested that hip muscle strength influences knee joint loading and may contribute to disease progression. Hip abductor strength has been associated with reduced knee adduction moments, potentially decreasing pain and improving function in individuals with knee OA. Isokinetic dynamometry provides a valid and reliable means of assessing joint torque, power, and velocity. Purpose: This study aimed to evaluate differences in the isokinetic performance of the hip abductor muscles between the painful and less painful sides in patients with knee osteoarthritis, and to examine the correlations of these parameters with pain intensity and functional disability. Methods: Thirty-five patients diagnosed with unilateral or bilateral knee OA were recruited from the outpatient clinic of the Faculty of Physical Therapy, Cairo University, Egypt. Isokinetic performance of the hip abductors—including peak power, torque, and work—was evaluated using the Biodex isokinetic dynamometer. Results: Significant differences were observed in hip abductor isokinetic performance between the painful and the less or non-painful sides in both unilateral and bilateral OA cases. In unilateral OA, the p-values were: power = 0.012, torque = 0.002, and work = 0.008. Similarly, in bilateral OA, significant differences were found (power < 0.001, torque < 0.001, and work < 0.001). Conclusion: The painful side exhibited reduced hip abductor performance compared to the less or non-painful side in patient suffered from either unilateral or bilateral knee osteoarthritis. No significant correlations were found between isokinetic parameters and either pain severity or functional disability in patient with chronic knee osteoarthritis. | ||
| Keywords | ||
| Hip abductors; Isokinetic dynamometer; Knee Osteoarthritis; Muscle power; Muscle torque | ||
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