Patellofemoral instability: evaluation by magnetic resonance imaging / Instabilidade femoropatelar: avaliação por ressonância magnética

OBJECTIVE: To determine the contribution of magnetic resonance imaging (MRI) in evaluating patelofemoral instability. METHODS: 39 patients (45 knees) with patellar instability underwent knee magnetic resonance images between October 2009 and July 2011, at the Rede Lab's D'Or, in the city of Rio de Janeiro, State of Rio de Janeiro, were included. MRI were analyzed for the presence of bone, hyaline cartilage and soft-tissue abnormalities, as well as anatomic variants that may contribute to chronic patellar instability. RESULTS: The authors found, of the 45 knees analysed, bone changes in 44%, cartilaginous injuries in 64%, disruption of the medial patellofemoral ligament (MPFL) in 29% and joint morphology abnormalities in 73% patients. Meniscal tears were also identified in 2 (4%) patients and fibular fracture in one (2%) patient. CONCLUSION: MRI allowed the detection of predisposing factors that may contribute to the development of patellofemoral instability and the diagnosis of bone, hyaline cartilage, ligamentous and meniscal abnormalities. .

OBJETIVO: Determinar a contribuição da ressonância magnética (RM) na avaliação da instabilidade femoropatelar. MÉTODOS: Foram incluídos 39 pacientes (45 joelhos) com instabilidade femoropatelar, submetidos à RM do joelho entre outubro de 2009 e julho de 2011, na Rede Labs D'Or, Rio de Janeiro (RJ). Os resultados dos exames foram analisados quanto à presença de alterações ósseas, cartilaginosas e nas partes moles, além de alterações anatômicas que podem contribuir para a instabilidade patelar crônica. RESULTADOS: Os autores encontraram, nos 45 joelhos examinados, alterações ósseas em 44%, lesões da cartilagem em 64%, ruptura do ligamento patelofemoral medial (LPFM) em 29% e anormalidades da morfologia articular em 73% pacientes. Foram também identificadas lesões meniscais em dois (4%) pacientes e fratura da fíbula em um (2%) paciente. CONCLUSÃO: A RM permitiu a detecção de fatores predisponentes à instabilidade e o diagnóstico de lesões ósseas, cartilaginosas, meniscais e ligamentares. .

Patellofemoral Instability: Evaluation by Magnetic Resonance Imaging.

OBJECTIVE: To determine the contribution of magnetic resonance imaging (MRI) in evaluating patelofemoral instability. METHODS: 39 patients (45 knees) with patellar instability underwent knee magnetic resonance images between October 2009 and July 2011, at the Rede Lab's D'Or, in the city of Rio de Janeiro, State of Rio de Janeiro, were included. MRI were analyzed for the presence of bone, hyaline cartilage and soft-tissue abnormalities, as well as anatomic variants that may contribute to chronic patellar instability. RESULTS: The authors found, of the 45 knees analysed, bone changes in 44%, cartilaginous injuries in 64%, disruption of the medial patellofemoral ligament (MPFL) in 29% and joint morphology abnormalities in 73% patients. Meniscal tears were also identified in 2 (4%) patients and fibular fracture in one (2%) patient. CONCLUSION: MRI allowed the detection of predisposing factors that may contribute to the development of patellofemoral instability and the diagnosis of bone, hyaline cartilage, ligamentous and meniscal abnormalities.

Reconstrução do Ligamento Cruzado Anterior com Tendão Patelar e Tendões dos Músculos Semitendinoso e Grácil: Avaliação Clinicofuncional Comparativa pelo Protocolo do IKDC

Avaliar comparativamente os resultados clinicofuncionais das reconstruções do ligamento cruzado anterior(LCA)com o tendão patelar (TP) e tendões dos músculos semitendinoso (ST) e grácil(GR)