Origin: Superior surface of the pubis, the pectineal line between iliopectineal eminence and tubercle of pubis;
Insertion: Pectineal line of femur, from lesser trochanter to linea aspera;
Action: Adduction of thigh at hip; Assistance in thigh flexion and controversial as to lateral or medial rotation at the hip;
Nerve Supply: Femoral and Obturator nerves, L2, L3, L4; (See Innervation)
Synergists: Adductor Brevis, Adductor Longus, Adductor Magnus, Gracilis

See picture link at pubmed