It then travels down the back of the thigh to the back of the knee, where it splits into the tibial and common fibular nerves.

坐骨神经接着从大腿后部一直走行至膝盖后部，然后分为胫神经与腓总神经两支。

The common fibular nerve is in charge of the muscles in the anterior and lateral compartments of the leg, and intrinsic extensors of the foot.

腓总神经支配小腿前部和外侧部的肌肉，以及足部的固有伸肌。