Patients with hip dysplasia are less physical active prior to PAO mainly due to groin pain. A decreased physical activity level is likely to have a negative impact on the muscles acting close to the hip joint with a possible increased risk of sustaining further acetabular labrum injury and/or overuse related to soft tissue pathology. After surgery, the risk of overuse related soft tissue pathology might be further increased due to surgery impact on muscles and tendons. If it is possible to demonstrate pathology of the hip muscles and tendons applying clinical tests, muscle strength tests, and ultrasonography, as it has been found in sports-active people with groin pain, it will make sense to plan and test a specific training program focusing on the pathological soft tissue pathology.