Browsing by Author "Flores, Andreia"
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- Biomechanical Characterization of Comfort Footwear using Gait AnalysisPublication . Flores, Andreia; Marques, Maria Arcelina; Fonseca, Pedro; Machado, Leandro; Vaz, MárioComfort footwear has unique characteristics fundamental to people looking for this type of shoe, namely foot support, flexibility, stability, lightweight, cushioning, traction, etc. [1]. They are usually preferred mainly by elder, overweighed or people with feet problems [2]. It is known that the shoe can modify gait behavior [3]. The purpose of this study was to evaluate posture and gait by comparing barefoot and shoe wearing circumstances to assess the real effect of the comfort footwear under study.
- Bone Immobilization devices and consolidation mechanisms: Impact on healing timePublication . Flores, Andreia; Marques, Arcelina; Machado, Joana; Marta, Miguel; Vaz, MárioThe human skeleton is formed by living tissues that react to loads and ensures the support of the remaining tissues of human body like muscles, ligaments, tendons, etc. However, its integrity can be compromised due to fractures or injuries of the bone tissue that require orthopedic surgery and immobilization methods, such as external fixators, intramedullary nail or osteosynthesis plates.One of the most important characteristics of living tissue is its capacity of self-regeneration. It is a complex process that implies several mechanisms during the consolidation time. Therefore, the knowledge of the involved mechanisms and their interdependence on external factors, will allow accelerating the regeneration process and contributing to the success of the rehabilitation process. Several techniques have been developed to characterizing characterize the mechanical loads acting in fractured bone to better understand the fracture consolidation and obtain useful information for the orthopedic doctors. This information is relevant to enable each patient follow-up and optimize the clinic procedures. As such, it is important to understand what happens during fracture consolidation to predict the necessary structural immobilization time and mechanical stimulus which shorten the healing process. The purpose of this work is twofold: primarily, to study the consolidation process using different immobilization systems, and secondarily, to explore the necessary time for bone consolidation by recording the relevant mechanical parameters time story.
- Mechanical behavior of external fixator on fracture healing processPublication . Lopes, Carla; Flores, Andreia; Marques, Maria Arcelina; Machado, Joana; Marta, Miguel; Vaz, MárioSucceeding a fracture of a long bone, there are multiple approaches to perform the bone fracture immobilization.The external fixation has traditionally been used under clinical indications, and can be a definitive optionin cases where risks of infection are high. The currently used system scannot predict or measure the complete bone consolidation[1, 2]. The purpose of the present study is to understand the phases of healing and to predict functional bone consolidation.This study was carrying out using the finite element analysis (FEA)to determine the influence of stress distribution along the tibia and the rods of the fixator.This information gathered by the present study is relevant to help medical and scientific communities to know the real fracture healing process.