Sonoelastography of Multifidus, Piriformis, Quadratus Lumborum, and Gluteus Medius Muscles in Patients with Unilateral Discogenic Lumbar Pain and Healthy Subjects: A Reliability Study.

The results revealed that sonoelastography seemed to be a reliable instrument to measure MF, P, QL, and GM muscle strain ratios in healthy subjects and patients with unilateral lumbar radicular pain. However, further studies are recommended to support the findings of the present study in other patients.