Summary Adductor magnus Origin Inferior pubic ramus, ischial ramus, and inferolateral area of ischial tuberosity Insertion 2 separate insertions: 1) Gluteal tuberosity of femur, medial lip of linea aspera, medial supracondylar ridge, 2) Adductor tubercle Action Powerful thigh adductor; superior horizontal fibers also help flex the thigh, while vertical fibers help extend the thigh Innervation Posterior division of obturator nerve (L2, L3, L4) innervates most of the adductor magnus; Hamstring portion innervated by tibial nerve Arterial supply Medial circumflex femoral artery, inferior gluteal artery, 1st - 4th perforating arteries, obturator artery, and some superior muscular branches of popliteal artery Innervation Adductor magnus is innervated by the obturator nerve (L2-L4) - adductor part tibial nerve (L4-S3) - hamstring part Primary nerves of the anterior thigh obturator nerve origin login to view 1 more bullet motor login to view 5 more bullets sensory login to view 1 more bullet course login to view 8 more bullets tibial nerve Adductor magnus is supplied by the obturator artery femoral artery medial femoral circumflex direct and perforating branches of the deep femoral artery Obturator artery arises from internal iliac artery in pelvis bifurcates in medial thigh into two branches anterior branch - pectineus, obturator externus, adductor muscles and gracilis posterior branch - deep gluteal muscles Femoral artery branches in thigh profunda femoris login to view 1 more bullet medial femoral circumflex lateral femoral circumflex Cross section high thigh mid thigh low thigh Adductor magnus lies in the medial compartment of the thigh. medial thigh compartment consists of adductor brevis (obturator n.) adductor longus (obturator n.) adductor magnus (obturator n.) gracilis (obturator n.) adductor magnus is bordered by anterior pectineus adductor longus adductor brevis sartorius (anterior/medial) medial gracilis sartorius (anterior/medial) superior obturator externus quadratus femoris posterior surface semitendinosus semimembranosus biceps femoris gluteus maximus Relevant Surgical Approaches Hip Medial Approach Clinical Images Obturator nerve block used for management of post-op pain from lower limb surgery or for chronic hip pain