A comparison of two modes of prosthetic prehension force control by arm amputees.

To evaluate mode of control of prosthetic terminal devices in terms of prehension force, 20 unilateral below-elbow amputees (10 regular voluntary opening hook wearers and 10 regular voluntary closing hook wearers) performed simple tasks requiring grasping and transporting light objects. Both types can be controlled precisely enough to avoid crushing objects such as straws and paper cups. No statistically significant difference was found in absolute amount of prehension force exerted by wearers of the two devices. (PsycINFO Database Record (c) 2010 APA, all rights reserved)