An interactive computer graphics system for the design of molded and orthopedic shoe lasts

Abstract

Abstract-The Department of Computer Science at North Carolina State University, with support from the Department of Veterans Affairs and National Aeronautics and Space Administration (NASA) Langley Research Center, has developed an interactive graphics program C The program runs on a Sun 31260 computer with a TAAC-1 graphics accelerator. The program contains operations for region addition and deletion, techniques for narrowing the ankle area, methods for toe extension, operations to allow for shoe inserts, etc. Once the operations by the user are complete, the program will resample the resulting last in a 512x512 array. The user is then allowed to select an error tolerance which will guide a data reduction program to represent the last as Coons patches. These patches are then transmitted to a milling machine which will cut the last.

Clinical evaluation of trans-tibial prosthesis sockets

“…The software in the various CAD CAM systems is especially developed for use in prosthetics and orthotics. Different systems have been designed for different applications, such as wheelchair seats, prostheses, lasts for orthopaedic footwear and for manufacturing of individually shaped insoles (McAllister et al, 1991). Several of these systems can be used for cosmetic applications in prosthetics and orthotics (Bok el al., 1990;Brussel.…”