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Posterolateral Hip Muscle Strengthening Versus Quadriceps Strengthening for Patellofemoral Pain: A Comparative Control Trial

Published:January 21, 2014DOI:https://doi.org/10.1016/j.apmr.2013.12.022

      Abstract

      Objective

      To compare the efficacy of posterolateral hip muscle strengthening versus quadriceps strengthening in reducing pain and improving health status in persons with patellofemoral pain (PFP).

      Design

      Comparative control trial.

      Setting

      Rehabilitation facility.

      Participants

      Persons with a diagnosis of PFP (N=36; 18 men, 18 women).

      Interventions

      Patients were alternately assigned to a posterolateral hip muscle strengthening group (9 men and 9 women) or a quadriceps strengthening group (9 men and 9 women). The posterolateral hip muscle strengthening group performed hip abductor and external rotator strengthening exercises, whereas the quadriceps strengthening group performed quadriceps strengthening exercises (3 times a week for 8wk).

      Main Outcome Measures

      Pain (visual analog scale [VAS]) and health status (Western Ontario McMaster Universities Osteoarthritis Index [WOMAC]) were assessed at baseline, postintervention, and 6-month follow-up.

      Results

      Significant improvements in VAS and WOMAC scores were observed in both groups from baseline to postintervention and baseline to 6-month follow-up (P<.001). Improvements in VAS and WOMAC scores in the posterolateral hip exercise group were superior to those in the quadriceps exercise group postintervention and at 6-month follow-up (P<.05).

      Conclusions

      Although both intervention programs resulted in decreased pain and improved function in persons with PFP, outcomes in the posterolateral hip exercise group were superior to the quadriceps exercise group. The superior outcomes obtained in the posterolateral hip exercise group were maintained 6 months postintervention.

      Keywords

      List of abbreviations:

      ANOVA (analysis of variance), PFP (patellofemoral pain), VAS (visual analog scale), WOMAC (Western Ontario McMaster Universities Osteoarthritis Index)
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