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Resultados em curto prazo de reabilitação após cirurgia de reconstrução de ligamento cruzado anterior utilizando-se enxerto de tendão patelar contralateral* Results in short term rehabilitation after surgery cruciate ligament reconstruction previous using patellar tendon graft contralateral Resumo As técnicas convencionais de cirurgia de reconstrução do LCA e os princípios que norteiam a reabilitação vêm surgindo como alternativas que proporcionam uma recuperação mais precoce e segura. O advento da utilização do enxerto do tendão patelar contralateral tem-se mostrado muito eficiente. Assim, o objetivo desse estudo foi avaliar a condição clínica de joelhos de pacientes submetidos a esse procedimento no momento de alta e comparar os seus resultados com os achados descritos na literatura para outras técnicas cirúrgicas. 23 indivíduos, praticantes de esportes em nível recreacional, de ambos os sexos, participaram deste estudo. Para montagem dos protocolos, foram utilizados o Questionário de Lysholm (QL), o Single Leg Hop Test (SLHT) e a Avaliação Isocinética do Joelho (AIJ). A média de pontos encontrado no QL foi 93,30, com a classe excelente se destacando entre as demais. A diferença média encontrada entre os membros doador e receptor no SLHT foi de apenas 2,06cm. Os pacientes apresentaram evolução satisfatória ao tratamento, que pode ser verificada pela pontuação e simetria obtidas nos testes realizados. Para outras técnicas cirúrgicas de reconstrução do LCA, não foram encontrados níveis semelhantes de simetria entre os membros, dentro do mesmo tempo de recuperação. Palavras-chave: Ligamento cruzado anterior. Joelho. Tendão Patelar. Single Leg Hop Test.

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Objective: To compare the application of partial meniscectomy concomitant with primary ACL reconstruction, using the graft from the patellar tendon with individuals who underwent only ACL reconstruction, in clinical functional criteria and degree of osteoarthritis (OA), after 10 years of the surgical process. Methods: This is a retrospective cross-sectional study with 37 patients who underwent ACL reconstruction with a graft from the patellar tendon, associated or not with partial meniscectomy, divided into 2 groups: with meniscal injury (n = 22) and without meniscal injury (n = 15). Anthropometric data and four outcome measures were used to analyze the results: SF-36 questionnaire, arc of motion assessment, Knee injury and Osteoarthritis Outcome Score (KOOS), and Ahlbäck Radiographic Classification. Results: No differences were found for health-related quality of life, arc of motion, functional condition and knee OA severity/grade in patients who underwent partial or no meniscectomy in conjunction with ACL reconstruction (p > 0.05). Conclusion: Participants who underwent partial meniscectomy in conjunction with primary ACL reconstruction with a graft from the patellar tendon, after 10 years of the surgical process, showed no significant differences in the clinical functional criteria and severity of knee OA, compared to individuals who underwent only ACL reconstruction. Level of Evidence II, Prognostic study.

This work contributes to enable and develop technologies to mount fast microreactors, to generate heat and electric energy, for the purpose to warm and to supply electrically spacecraft equipment and, also, the production of nuclear space propulsion effect. So, for this purpose, the Brayton Cycle demonstrates to be an optimum approach for space nuclear power. The Brayton thermal cycle gas has as characteristic to be a closed cycle, with two adiabatic processes and two isobaric processes. The components performing the cycle's processes are compressor, turbine, heat source, cold source and recuperator. Therefore, the working fluid's mass flow runs the thermal cycle that converts thermal energy into electrical energy, able to use in spaces and land devices. The objective is numerically to model the Brayton thermal cycle gas on nominal operation with one turbomachine composed for a radial-inflow compressor and turbine of a 40.8 kWe Brayton Rotating Unit (BRU). The Brayton cycle numerical modeling is being performed with the program RELAP5-3D, version 4.3.4. The nominal operation uses as working fluid a mixture 40 g/mole He-Xe with a flow rate of 1.85 kg/s, shaft rotational speed of 45 krpm, compressor and turbine inlet temperature of 400 K and 1149 K, respectively, and compressor exit pressure 0.931 MPa. Then, the aim is to get physical corresponding data to operate each cycle component and the general cycle on this nominal operation.