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Hip Strength in Females With and Without Patellofemoral Pain

2003; American Physical Therapy Association; Volume: 33; Issue: 11 Linguagem: Inglês

10.2519/jospt.2003.33.11.671

1938-1344

Mary Lloyd Ireland, John D. Willson, Bryon T. Ballantyne, Irene Davis,

Hip disorders and treatments

Study Design Cross-sectional. Objectives To determine if females with anterior knee pain are more likely to demonstrate hip abduction or external rotation weakness than a similar, asymptomatic, age-matched control group. Background Diminished hip strength has been implicated as being contributory to lower-extremity malalignment and patellofemoral pain. The identification of reliable and consistent patterns of weakness in this population may assist health care professionals establish a more effective treatment plan. Methods and Measures Hip abduction and external rotation isometric strength measurements were recorded for the injured side of 15 female subjects with patellofemoral joint pain (mean ± SD age, 15.7 ± 2.7 years; age range, 12–21 years). These were compared with strength measurements from the corresponding hip of 15 age-matched female control subjects (mean ± SD age, 15.7 ± 2.7 years; age range, 12–21 years). All strength measurements were made using hand-held dynamometers. Results Subjects with patellofemoral pain demonstrated 26% less hip abduction strength (P<.001) and 36% less hip external rotation strength (P<.001) than similar age-matched controls. Conclusions The results indicate that young women with patellofemoral pain are more likely to demonstrate weakness in hip abduction as well as external rotation than age-matched women who are not symptomatic. J Orthop Sports Phys Ther. 2003;33:671–676.