Hip strengthening to improve Patellofemoral Pain Syndrome
Dysfunctional hip movement patterns resulting from hip muscle weakness has been proposed as a contributing factor in the development of Patellofemoral Pain Syndrome. This study examined clinical outcomes associated with isolated hip muscle strengthening in those with PFPS.
28 females with PFPS were assigned to an exercise or a no-exercise control group. The exercise group completed bilateral hip abduction and external rotator strengthening 3 times per week for 8 weeks. Pain (visual analog scale), health status (WOMAC), and hip strength (handheld dynamometer) were assessed at baseline and post-intervention. Pain and health status were also evaluated at 6 months post-intervention in the exercise group.
Post intervention testing showed that pain, health status, and bilateral hip strength improved in the exercise group following the 8-week intervention and did not change in the no-exercise group. The improvements in pain and health status were maintained in the 6 month follow-up as well.
A strength program of isolated hip abduction and external rotator strengthening is effective in improving pain and health status in females with PFPS compared to a no-exercise control group. Incorporating hip abduction and external rotation strength exercises should be considered when designing a rehabilitation program for females with PFPS.
Reference: Khayambashi et al. The effects of hip abductor and external rotator muscle strengthening on pain, health status and hip strength in females with patellafemoral pain: A randomized control trial, JOSPT, 2012 January 42;1(1).