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The innervation is supplied by the inferior gluteal nerve, a branch of the sacral plexus (L4-S2). Numerous vessels and nerves run under the gluteus maximus muscle, including the sciatic nerve, the pudendal nerve and the superior gluteal vessels.
Pectineus adducts the thigh, flexes the knee joint and medially rotates the hip. The nerves which supply this muscle are the femoral nerve (usually) and the obturator nerve (occasionally). Blood vessels that supply pectineus are the femoral artery. Pectineus muscle forms part of the medial compartment of the thigh. More specifically, pectineus lies in the anterior layer of the medial compartment, along with adductor longus. Pectineus lies between iliopsoas and adductor longus. These three muscles form the floor of the femoral triangle.