Swainson's hawk. Swainson's hawk (Buteo swainsoni), is a large Buteo hawk of the Falconiformes, sometimes separated in the Accipitriformes like its relatives. This species was named after William Swainson, a British naturalist.
The peroneal nerve controls the muscles that lift your foot. This nerve runs near the surface of your skin on the side of your knee closest to your hand. Activities that compress this nerve can increase your risk of foot drop. Crossing your legs. People who habitually cross their legs can compress the peroneal nerve on their uppermost leg.
Nerve injury is the most common cause of foot drop. Compression of the peroneal nerve affects the control on the muscles involved in lifting the foot. The nerve may get compressed at the knee or in the lower spine. Knee or hip replacement surgeries of other nerve injuries may also damage the nerve.