Obturator Internus

The obturator internus is a muscle located in the gluteal region of the lower limb, forming part of the lateral wall of the pelvic cavity. It plays a crucial role in the movement of the hip joint.

This muscle originates from the pubis and ischium around the obturator foramen and inserts onto the greater trochanter of the femur. Its unique path allows it to contribute to hip stability and movement.

The primary actions of the obturator internus are lateral rotation and abduction of the lower limb. These movements are essential for various activities, including walking and maintaining balance.

The obturator internus is innervated by the nerve to obturator internus. This nerve is responsible for transmitting signals that enable muscle contraction and function.

The blood supply to the obturator internus muscle comes from the obturator artery. This vascular supply is vital for delivering oxygen and nutrients necessary for muscle health and function.