Palpate deeply at the Lesser Trochanter along the lateral border of the femoral triangle to assess for the distal trigger point of the Iliopsoas.Palpate along the inner border of the Ileum behind the ASIS to locate the trigger points of the Iliacus.
Travell and Simons discuss these trigger points in their book Myofascial Pain and Dysfunction The Trigger Point manual Vol 2. Trigger points are generally the result of the muscle being overloaded following an acute, prolonged, or repetitive incident. In addition, compression of the trigger point may produce referred tenderness as well as an autonomic phenomena. When this muscle area is compressed, it is locally tender and can give rise to referred pain. (1999), a trigger point is associated with a hypersensitive nodule of tissue. A trigger point: a hyper-irritable area of the muscular tissue. We often find Iliopsoas trigger points in women with a history of chronic pelvic pain.