The Obturator Externus is a flat, triangular muscle located in the hip region. It originates from the outer surface of the obturator membrane and surrounding bones of the pelvis. This muscle plays a crucial role in the lateral rotation of the thigh, helping to stabilize the hip joint during movement. In addition to its primary function, the Obturator Externus also assists in adducting the thigh. It is innervated by the obturator nerve, which is responsible for transmitting signals from the spinal cord to the muscle, enabling it to contract and perform its functions effectively.