The choice of terminal devices.

ponents of the upper-extremity prosthesis is to make it possible for the terminal device to be operated effectively, the hook or artificial hand is considered to be the most important component of any artificial arm. The terminal device (or devices, since they can quickly be interchanged for a given individual) plays the decisive role in determining the functional and cosmetic value of the prosthesis to the wearer. Of considerable importance, therefore, is a knowledge of the process by which the terminal device is chosen from among the many types available commercially (19). But the criteria for selection and prescription of hooks and hands present a confusing picture and often are difficult to isolate. Some amputees, because of long-standing habit, resist change and retain the hook or hand with which they were first fitted. Others rely on the advice of well-intentioned friends, who also may be amputees, and make frequent changes in the attempt to find what does not exist—the completely satisfactory device. Perhaps the largest group depend upon the prosthetist for guidance (14). With the recent development of prosthetics clinic teams, usually consisting of a physician, a prosthetist, and a therapist (3), the tendency is for more and more amputees to have their terminal devices prescribed for them. Although the prescription of terminal devices by the clinic team is clearly the most desirable method, certain aspects of this process are confusing too because different clinic teams