الفهرس 
Relationship Between Hip abductors, External Rotators Strength and Dynamic Knee Valgus in Jumper’s Knee
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Abstract
Jumper’s knee is a common and noteworthy issue experienced in sports medicine and sports injuries. The relationship between proximal hip muscle strength and dynamic knee valgus would modify the load on the patellar tendon which could cause patellar tendinopathy. Purpose: to investigate the relationship between the isometric strength of the hip abductors, external rotators and dynamic knee valgus angle in subjects with jumper’s knee, and to check out if there’s an association between those factors with pain level and level of disability. Materials and Methods: Forty-five male subjects ranged from 18 to 35 years-old recreationally active people were enrolled to take part in this study. All athletes were evaluated by hand held dynamometer (HHD) to measure the torque of isometric strength of hip abductors and external rotators. And frontal plane projection point (FPPA) was evaluated by Kinovea Computer Program (KCP) video analysis. The level of pain and knee dysfunction level were assessed by VISA-p questionnaire and VAS. Results: {1} No correlations had been reported between the torque of abductors and external rotators isometric strength with VISA-P and VAS. {2} No significant correlations were observed between dynamic knee valgus with VAS and VISA-P score. {3} No significant correlations were observed between dynamic knee valgus and isometric strength of hip abductors and external rotators. Conclusion: In the present study no significant relationship was observed between hip abductors, external rotators and dynamic knee valgus with level of pain and knee disability in jumper’s knee athletes