Texas Scottish Rite Hospital Motorized Forearm

RODNEY A. HASLER, BS**, DONNA JACKSON, CP,AND THERESA HOLLEY, CPDallas, Texas


The Bioengineering and Prosthetics Departments have confronted the difficulty children have with the high forces needed to actuate traditional body-powered terminal devices by developing a motorized forearm module. Totally self-contained, it can be used with the CAPP terminal device and several other hooks and hands. It screws into the prosthetic socket. A steel cable exits from the back of the module and is harnessed in the traditional manner. The cable is connected to a threeposition switch which allows the amputee to isolate opening, stall, and closing. Prototypes used to actuate the CAPP terminal device met with great favor by our amputees. After several mechanical and functional refinements we are preparing to enter clinical trials with several different terminal devices on the latest modules.

**Texas Scottish Rite Hospital, 2222 Welborn, Dallas, TX 75219

Vol. 21, No. 2, Summer 1986