CAD/CAM

Computer-Aided Design and Computer-Aided Manufacturing can be used in the field of Prosthetics, Orthotics, and Pedorthics to drastically reduce the time and cost for devices while improving their fit and function.

Optical scanners quickly (< ~10 sec) produce objective, repeatable 3-D data for input into the CAD/CAM systems. This replaces time consuming (90 min+), subjective casting methods.

Advanced software applications use the 3-D data, along with other types of data, and operator input to produce a computer representation of the final product or device used to create the final product. All models and data are saved on the computer making iterative modifications much easier.

CAM - The computer outputs instructions to a machine to precisely and repeatedly create the final product or intermediate device.

Our researchers have developed a pedorthic CAD/CAM system, LastMaker and Pattern Maker, for VAMC application and use. The VA Pedorthic CAD/CAM System they developed, was recognized for its technical excellence with receipt of Microsoft Corporation Windows World Open Award for Best Health Care Software Application in 1998 developed using Microsoft products. The Pedorthic CAD/CAM System has been clinically tested by a representative group of VA orthotists/pedorthists to ensure it fulfills all VAMC clinical operational and performance requirements

3-D Pedorthics Optical Digitizer quickly scans the foot with controlled loading and varying heel heights replacing the time consuming, subjective casting & pouring to make positive models. back to top

Solid & Cross-Sectional views of LastMaker. Scan of patient's foot is overlayed with graded Last from Library. For severe deformities, Lasts can be designed directly from scanned data.

Patients' peak planter stance and gait stress measurements, using FScan, can be imported and superimposed on lasts so areas with excessive pressure can be identified and modifications made to redistribute loading to more stress tolerant regions.

LastMaker can flatten the 3D last into 2D shell using a build-in FEM model, and then generate the shoe upper pattern pieces for shoe construction. back to top

CAM is performed by a computer numerically controlled mill to carve lasts out of high density polyethylene thermoplastic for use in definitive footwear manufacture.

Definitive footwear designed and manufactured with the VA LastMaker and PatternMaker CAD/CAM System. A complete range of VA approved footwear styles and sizes can be produced with the system, from low quarter oxfords to high top boots. back to top