Adductor muscles of the thigh – Anterior view
This specimen shows the adductor muscles of the thigh.
The adductor region, consists of muscles, namely, the adductor magnus, the adductor longus, the adductor brevis, the gracilis, are seen in the specimen. All these muscles cause adduction of the thighs. Obturator nerve is also seen in the specimen.
The adductor magnus is a large muscle of the adductor compartment of the thigh. It takes origin from the ischial tuberosity and the inferior pubic ramus. The insertion lies at the linea aspera. It is supplied by the obturator nerve and the tibial part of the sciatic nerve. It helps in adduction of the thigh and extension of hip and flexion of knee. It presents a large osseo-aponeurotic opening, known as adductor hiatus, for the passage of femoral artery and femoral vein.
The adductor brevis takes origin from pubis and inserts into the linea aspera of femur. It is supplied by the Obturator nerve. It helps in adduction of the thigh.
The obturator nerve is a branch of the lumbar plexus. Its root value is ventral divisions of ventral rami of L2, L3 and L4 spinal nerves. Its anterior and posterior divisions supply the adductor muscles, hip joint and knee joint. During spasm of the adductor muscles, the obturator nerve is divided surgically.