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Relationship between Hip Strength and Trunk, Hip, and Knee Kinematics during a Jump-Landing Task in Individuals with Patellofemoral Pain

Authors: Boling M, Padua D

Decreased strength of the hip musculature and altered mechanics of the lower extremity have been identified in individuals with patellofemoral pain (PFP). The aim of this study was to determine if a relationship exists between hip muscle strength and transverse and frontal plane motion at the hip and knee, and ipsilateral trunk flexion during a jump-landing task in individuals with PFP. The results of this study demonstrated decreased eccentric isokinetic strength of the hip external rotators and abductors which were significantly correlated to increased frontal plane motion at the hip and trunk, respectively (P<0.05). Therefore, based on these findings, eccentric strengthening exercises for the hip musculature may be an important component for clinicians to include when rehabilitating individuals with PFP who display increased frontal plane motion at the hip and trunk.

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