psoas minor muscle
Psoas minor muscle is a thin muscle with a long tendon and is functionally insignificant compared to psoas major. It is present in ~60% (range 50-67%) of the population .
- origin: T12 and L1 vertebral bodies and intervening IV disc
- insertion: passes behind the inguinal ligament to insert into the iliopubic eminence
- nerve supply: L1 nerve root
- action: lumbar spine flexion