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OBJETIVO: Analisar a evolução de um grupo de pacientes submetido a artroplastia unicompartimental de joelho para tratamento das artroses e nas osteonecroses que comprometem exclusivamente o comportamento medial. MÉTODOS: Foram avaliados 49 pacientes portadores de artrose unicompartimental de joelho com idade variando entre 47 e 88 anos de idade, sendo 12 homens e 37 mulheres. Todos foram submetidos à artroplastia unicompartimental do tipo Miller-Galante. Após seguimento mínimo de quatro anos, os pacientes foram avaliados subjetivamente pelo exame ortopédico e objetivamente pelo sistema Hospital for Special Surgery (HSS). RESULTADOS: Apenas uma paciente necessitou de revisão para artroplastia total; quatro apresentaram dor não incapacitante; e três, queixas de instabilidade esporádica não incapacitante. Na avaliação do HSS, 30 pacientes apresentaram resultados excelentes; 18, resultados bons; e um, resultado regular. CONCLUSÃO: A artroplastia unicompartimental é uma boa opção para casos de artrose e osteonecrose do compartimento medial do joelho. OBJECTIVE:To analyze the evolution of a group of patients submitted to unicompartmental arthroplasty of the knee to treat arthrosis and in osteonecrosis that involve only the medial compartment. METHODS: 49 patients with unicompartmental knee arthrosis were evaluated. Ages ranged between 47 and 88 years, 12 of them male, and 37 female. All were submitted to the Miller-Galante type unicompartmental arthroplasty. After a minimum follow-up of four years the patients were evaluated objectively by the orthopedic exam and subjectively by the HSS system. RESULTS: Only one patient required a revision for total arthroplasty, four patients presented non-disabling pain, and three complained of sporadic instability, though not disabling. In the HSS evaluation, 30 patients had excellent results, 18 had good results, and one had a regular result. CONCLUSION: Unicompartmental arthroplasty is a good option for arthrosis and osteonecrosis of the medial compartment of the knee

Artroplastia unicompartimental no tratamento da artrose medial do joelho