The psoas minor is a reasonably modest-sized muscle that lies on the entrance facet of the bigger psoas main muscle. It acts as a weak flexor of the trunk, serving to an individual bend ahead.
The psoas minor originates through attachment to the T12 and L1 vertebrae, within the mid-to-low again. This refers back to the thoracic and lumbar backbone and the intervertebral disc between them. It then travels down and attaches to the iliopubic eminence (the junction of the pubis with the ilium on the entrance facet of the pelvis) with a protracted tendon.
The nerve that controls the psoas minor is the anterior main rami of L1.
Oddly sufficient, about 50 % of individuals do not have a psoas minor muscle. Somebody that has the muscle and strains it, nonetheless, can expertise a 50 % discount in vary of hip movement.