Inclusion Criteria:  18 to 65 years of age Tender point (or trigger point) in piriformis muscle determined by physical exam  Exclusion criteria:  Less than 45 degrees of active hip flexion, less than 5 degrees of active hip internal rotation or less than 30 degrees of active hip external rotation, on side of affected piriformis Unable to lay prone Non-English speaker Inability to attend 2 sessions within the same month Active cancer Pregnant Diagnosis of lumbar radiculopathy Greater than grade 1 lumbar spondylolisthesis Presence of lumbar region Pars Defect Receiving massage, acupuncture, chiropractic treatments, osteopathic treatments during study period.