Origin
Vertebrae T12-L5.
Insertion
Femur – lesser trochanter.
Blood supply
Iliolumbar artery.
Nerve supply
L1, L2, L3 nerves.
Action
Psoas major muscle provides strength and flexibility to hip joint and helps to turn around and rotate. It also helps to bend the upper body forward and backward.
Disease/Injury
When psoas major muscle gets injured, the person experiences lower back pain. You may also feel pain while sitting and standing or while moving leg forward.
Muscle Exercise
To strengthen psoas major muscle, you can perform leg raises. Lie on your back and raise your right leg up until it is at 90 degrees to your trunk. Hold and bring it down slowly, but do not touch the floor. A few inches above the floor, raise the leg again. Do 15 repetitions and repeat the same with the other leg.
Interesting facts
NA
