Dr. Travell refers to the trigger points in the iliopsoas muscle group as the hidden pranksters of myofascial low back pain complaints, and rightly so. This muscle group lies deep in the abdominal cavity, out-of-sight and out-of-mind for many healthcare practitioners.

Though they rarely present as a single-muscle myofascial pain complaint, the iliopsoas trigger points frequently contribute to chronic low back pain cases, and must be addressed to effect a complete and lasting resolution of these cases.