Uberon definition : The psoas major is a long fusiform muscle placed on the side of the lumbar region
of the vertebral column and brim of the lesser pelvis. It joins the iliacus muscle
to form the iliopsoas. In less than 50 per cent of subjects the psoas major is accompanied
by the psoas minor. [WP,unvetted].;
The psoas major is a long fusiform muscle placed on the side of the lumbar region
of the vertebral column and brim of the lesser pelvis. It joins the iliacus muscle
to form the iliopsoas. In less than 50 per cent of subjects the psoas major is accompanied
by the psoas minor. [WP,unvetted].