a passive exercise unit for manipulating legs and / or arms of a patient to achieve improved circulation , development of muscles and achieve full extension of otherwise crippled limbs . a motor - driven crankshaft member carries leg cradles on opposite sides of a housing that is supported on a base . this base can be , if desired , releasable fastened to a bed supporting the patient . these cradles are pivotally supported , and their position relative to the crankshaft permits a selected degree of motion for the patient &# 39 ; s legs . an upwardly - extending frame carries arm exercising components that include cables to hand grips . motion for these cables is achieved by connections to the crankshaft used for the leg cradles . this frame can be folded against , or stored in , the housing when not in use . in a preferred embodiment there are glove units to assist in the holding of hand grips by the patient .