ABSTRACT
Loss of flexion of the digits can jeopardize one of the essential functions of the hand: the grip. This severe disability can be caused by neurologic, traumatic, pathologic, or congenital lesions.
Digitopalmar grasp as well as thumb – fingers pinch are only the mechanical components of prehension. Prehension can be defined as all of the functions put into play when an object is seized by the hand: intent, permanent sensory control, and a mechanism of grip. Ocular control, useful at the beginning of a normal prehension, becomes necessary during all stages of prehension when sensation is absent or insufficient.
