The development of high resolution ultrasound has allowed evaluation of normal and abnormal ultrasound appearance of peripheral nerves. Ultrasound provides a unique method for evaluation of these nerves because it allows direct imaging of nerves, as well as changes in nerve shape and echo texture. Ultrasound has an ability to follow nerves over a long distance in a limb. The colour and power Doppler improve the ability to evaluate the peripheral nerves by evaluation of near vessels. Entrapment neuropathies are group of disorders result from injury to a nerve as it travels through osteofibrous tunnels.