This is what I am staring at this morning…
Movement of the hip joint
Flexion of the hip occurs when the angle between the torso and thigh is decreased. When this angle is increased extension occurs; beyond normal standing posture, the movement is called hip hyperextension. Hip rotation occurs when the femur moves along its longitudinal axis. When the anterior surface of the femur turns outward, this is lateral rotation of the hip. The movement of the anterior surface of the femur inward is medial rotation of the hip. Medial rotation of the hip is carried out bygluteus medius and gluteus minimus. Hip abduction occurs when the femur moves outward to the side, as in taking the thighs apart. Hip adduction occurs when the femur moves back to the midline.
Many of the hip muscles are responsible for more than one type of movement in the hip, as different areas of the muscle act on tendons in different ways.
The psoas is the primary hip flexor, assisted by the iliacus. The pectineus, the adductors longus, brevis, and magnus, as well as the tensor fasciae latae are also involved in flexion.
The gluteus maximus is the main hip extensor, but the inferior portion of the adductor magnus also plays a role.
Medial rotation is performed by the glutaei medius and minimus, as well as the tensor fasciae latae and assisted by the adductors brevis and longus and the superior portion of the adductor magnus.
Each muscle of the lateral rotator group causes lateral rotation of the thigh. These muscles are aided by the gluteus maximus and the inferior portion of the adductor magnus.