The pectineus is a conical muscle, with its base directed upwards. It is divided above by the pubio-femoral ligament which passes between its two segments on its way to the hip-joint.

Origin. - By two branches from the under surface of the pubis.

Insertion. - Into the inner surface of the thigh-bone about its middle.

Action. - To adduct and flex the thigh and rotate it inwards.