 People with anterior knee pain have significant hip abductor muscle weakness compared to healthy people Prins, 2009. Hip abductor weakness has a strong correlation with impaired lower extremity mechanics and increased pain with functional activity Stickler et al. 2014. A study by Roach et al in 2013 found that 97 of patients with anterior knee pain had a trigger point in their gluteus medius muscle, while only 23 of healthy controls had trigger points. Trigger points alter normal muscle activity and increase pain in patients Lucas, 2010, Ibarra et al 2011. Hip abduction strengthening has been found to significantly decrease pain and improve function in patients with anterior knee pain Earl, 2011. By decreasing trigger points in the gluteus medius the investigators may be able to increase hip abduction strength reducing pain and dysfunction in patients with anterior knee pain. 