A system of extension prostheses

It is suggested that three basic types of extension prostheses are required as shown in Figure 1. Four methods of achieving these prescriptions using rigid, total-contact, polyester laminate sockets have been described, and the table (Fig. 6) indicates the correct method to be used for each type. These prostheses have proved very durable and repairs have been limited to replacing the straps and foot coverings. Advantages claimed are improved comfort, efficiency, and appearance, in addition to speed of fabrication and lightness when compared with conventional prostheses.