The adductor Magnus muscle is the largest muscle on the inside of the thigh. It originates on the pubis and ischial tuberosity, and inserts on the femur. It acts on the hip joint causing addiction. The anterior fibres also help flex the hip while the posterior fibres assist in hip extension. Trigger points are common in this muscle in athletes such as hockey and soccer players. When trigger points develop they refer pain into the anterior inner thigh. Trigger points in the upper portion of the muscle refer pain deep within the pelvis.