Orientador: Marcelo Augusto Assunção Sanches / Resumo: Neste trabalho é apresentado o desenvolvimento de um sistema de alinhamento referenciado de prótese de membro inferior, denominado PASyLL (Prosthesis Alignment System of Lower Limbs). A qualidade do alinhamento e ajuste de próteses de membros inferiores é fundamental no processo de reabilitação, principalmente porque contribui para que não ocorra o abandono do uso da prótese. Atualmente, muitos alinhamentos de próteses ainda são realizados de forma subjetiva, sem auxílio de equipamentos, ou seja, apenas com base na experiência e conhecimento do profissional de saúde. Diante disso, desenvolveu-se o PASyLL, um sistema para auxiliar o profissional da saúde no alinhamento de prótese. Este equipamento mede parâmetros importantes para um alinhamento adequado, fornece ao terapeuta dados objetivos, auxiliando-o na tomada de decisão. Com este sistema é possível medir e realizar ajustes no comprimento, medir a distribuição do peso no membro protetizado e não protetizado, verificar a posição do centro de pressão do paciente (COP), desta forma auxiliar no ajuste médio lateral e anteroposterior. O sistema possui fachos laser na horizontal e vertical, permitindo assim um alinhamento referenciado. O erro percentual na medição do peso foi inferior a 1% e na medida do COP, inferior a 5%. / Abstract: In this work the development of a referenced alignment system of lower limb prosthesis, called PASyLL (Prosthesis Alignment System of Lower Limbs), is presented. The quality of the alignment and adjustment of lower limb prostheies is fundamental in the rehabilitation process, mainly because it contributes to the abandonment of prosthesis use. Currently, many prosthesis alignments are still performed subjectively, without the aid of equipment, that is, only based on the experience and knowledge of the health professional. Therefore, the PASyLL, a system to assist the health professional in the prosthesis alignment, was developed. This equipment measures important parameters for proper alignment, provides the therapist with objective data, assisting him in decision making. With this system it is possible to measure and adjust the length, measure the weight distribution in the amputated and not amputated limb, verify the position of the patient pressure center (COP) in this way assist in the lateral lateral and anteroposterior adjustment. The system has horizontal and vertical laser beams, allowing a referenced alignment. The percentage error in weight measurement was less than 1% and in the COP, less than 5%. / Mestre

This master thesis deals with lower-limb prosthesis. The aim of the first part of this work is stress-strain analysis of trans-tibial prosthesis, which is understand without prosthetic socket and the foam prosthetic feet. Analysis is made using finite element method in ANSYS Workbench 12.0 software. For the purpose of setting up the computational model it is necessary to make few partial models. Model of geometry of the prosthesis is made in SolidWorks 2009. Based on the outputs of stress-strain analysis and the results evaluation, the critical component is chosen and this one is evaluated according to limite state for fatigue. The algorithm of evaluation of named component in the state of high cycle fatigue is discussed in the second part of this thesis.

Prosthesis treatment requires the close interaction of different actors. In fitting prostheses to patients, special attention is given to the manufacturing of the socket. The continuous development of the technologies involved in the fitting and optimization of prostheses is shown in the literature. The assessment of orthopedic technicians and their influence in the process is thus far largely unexplored. Ten orthopedic technicians were interviewed about the socket fitting process after transfemoral amputation. The research goal was to clarify the socket treatment process with regards to the German context. The results showed that the orthopedic technicians focussing on the patient during the fitting process. This study underlines the importance of interaction and empathy. Volume fluctuations are decisive within the treatment process and are interactively influenced by various factors. Furthermore, the research emphasizes the need for appropriate assistive technologies and the potential for the further development of existing systems.