Source:http://linkedlifedata.com/resource/umls/id/C0085221
MSH: A powerful flexor of the thigh at the hip joint (psoas major) and a weak flexor of the trunk and lumbar spinal column (psoas minor). Psoas is derived from the Greek "psoa", the plural meaning "muscles of the loin". It is a common site of infection manifesting as abscess (PSOAS ABSCESS). The psoas muscles and their fibers are also used frequently in experiments in muscle physiology.,NCI: Muscles of the lower back whose actions involve the flexion of the hips and lumbar spine. The term may refer to psoas major muscle and psoas minor muscle, both located in the lower back. (NCI),NCI: Muscles of the lower back whose actions involve the flexion of the hips and lumbar spine. The term may refer to psoas major muscle and psoas minor muscle, both located in the lower back.