3D Models for Leg Prosthesis The first step to measure the stub’s fitting into a prosthetic device

Abstract—A system for (tri-dimensional) 3D modeling of the leg prosthesis and posterior limb-prosthesis fitting measurement is being developed. This is a real problem, which needs to be solved in order to diminish the complications caused by a lack of adaptation between the patients stub and the device. These complications consist in mechanical stresses and possible injuries in the patient’s limb. The system can segmentate a randomly projected laser line on the inner surface of the prosthesis and detect the geometric center of the prosthesis ’ recorded image. This work is at an early stage, and the final system should be capable of projecting a laser circumference on the prosthesis and use it as a scanner to measure its dimensions. If properly developed and functional, the system would fill a gap in the existent technology as it allows prosthetists and doctors to do a more accurate and faster design of the prosthetic devices and be capable of giving a better comfort to the amputee. Keywords-component; leg prosthesis, fitting, laser scanner, image processing, 3D data I