The adductor brevis muscle belongs to a group of muscles of the lower limb known as hip adductors. Although the muscles of the hip adductor group are located on the medial aspect of the thigh, between the extensor and flexor group of thigh muscles, they are functionally classed as hip adductors because they mainly act on the hip joint.
The adductor brevis muscle has its origin on the inferior pubic ramus and inserts on the medial lip of the linea aspera, on the upper 1/3 of the femur. This muscle receives motor innervation from the obturator nerve (L 2, L 3), a branch of the lumbar plexus.
As a member of the hip adductor group of muscles, the main function of the adductor brevis muscle is to facilitate the adduction of the hip joint. In addition to adduction of the hip joint, the adductor brevis also facilitates the flexion and outward rotation of the hip joint as well as stabilizes the pelvis in both the coronal and sagittal planes.
The hip adductor group of muscles in general, also play an important role in balancing the pelvis when standing and walking. This is is also the particular group of muscles that we use when crossing our legs.
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