"Stegosaurus" had short fore limbs in relation to its hind limb. A similar phenomenon is unexplained sensation in a body part unrelated to the amputated limb. Growth occurs from proximal to distal part of the limb. Amputation is reserved for cases where limb salvage is not possible. It acts to rotate the pelvic limb laterally. His mind becomes unhinged after coming across an empty trap with a severed animal limb. He survived, permanently affected by damage to nerves of his right upper limb. The caudofemoralis is a muscle found in the pelvic limb. Limb and respiratory (diaphragm) muscles are especially affected. A surgical tourniquet prevents blood flow to the limb. Lack of blood flow to a limb results in acute limb ischemia. Specifically, Wnt7a helps produce the dorsal patterning of the developing limb. A9 is for people with combinations of upper and lower limb amputations. Type III gives rise to upper limb abnormalities. The majority of individuals with both phantom limb and dysesthesia experience painful sensations.