Cerebral Palsy maybe/maybe not

discrimination. On that capability, rides success or failure. Because of the very fine discrimination and fine control of the hand, even equal sensory loss in the hand causes worse hand function than leg function. The most needed sensation from the foot relates to timing of walking and confirmation of single limb support integrity. When sensation is impaired, the timing will get inferred from other means.

In tertiary syphilis, sensation in the legs is badly impaired with no loss in motor function. One can hear a syphilitic coming from way off by the loud

slapping of the feet. The slapping isn't a defect in motor control but a means to detect when the feet have hit the ground - by sound. The eventual result is destroyed joints from high repetitive (sound timing) impact.

On the right we see a similar destruction from insensitive walking. This is a girl with a focal limb sensory deficit. Her motor skills are normal as long as not requiring sensitive control. Severe motor loss is not as disabling as severe sensory loss. A person who has polio sequelae with very advanced muscle power loss often walks because the sensory side is normal and therefore compensatory tricks can be executed with precision and some bracing. Another oddity. In some inexplicable way, intact sensation figures in growth equalization between the two sides and between muscle components. When sensation is reduced, the part affected tends to under grow by a small percentage. This may be the mechanism as to why some muscles under grow in CP. Maybe. Mm-mm. Maybe not. In any event, in hemiplegia, undergrowth of the affected side proportions to the sensory loss rather than to