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1.
Knee ; 21(5): 964-70, 2014 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-25086900

RESUMO

BACKGROUND: Results of knee replacement registries have shown that unicompartmental knee arthroplasty (UKA) has a significantly higher revision and failure rate than current state-of-the-art TKA. The aim of this prospective study is to evaluate the long-term outcomes and to calculate the 10 year survival of knees with medial osteoarthritis treated with Uniglide® UKA. METHODS: Two hundred thirty-four patients were assessed by an independent clinical observer using the American Knee Society Clinical Rating System, a validated outcome measure. Kaplan-Meier analysis was used to calculate the 10 year survival rates using revision surgery for any cause as the end point. RESULTS: There were no revisions due to progression of lateral osteoarthritis or polyethylene failure. There were one traumatic and three non-traumatic bearing dislocations and two revisions due to aseptic loosening of the tibial component. One joint was revised for traumatic ligament rupture, one for synovitis from bearing impingement, one due to femoral component mal-positioning and one for infection. A total of 10 cases were revised due to failures for any cause in the 61 patients withdrawn because they had died, thus giving a cumulative survival rate at 10 years of 95.57%. The knee (function) score showed an increase from 33.4 (54.7) pre-operatively to 94 (83.4) points post-operatively. The average range of motion increased from 107 to 122° (p<0.01). CONCLUSION: Based on our findings we believe that the Uniglide® unicompartmental knee prosthesis offers a safe and effective solution for the treatment of medial compartment osteoarthritis.


Assuntos
Artroplastia do Joelho/instrumentação , Prótese do Joelho , Osteoartrite do Joelho/cirurgia , Desenho de Prótese , Falha de Prótese , Adulto , Idoso , Idoso de 80 Anos ou mais , Cimentação , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Amplitude de Movimento Articular , Reoperação , Fatores de Tempo , Resultado do Tratamento
2.
Knee ; 11(5): 349-55, 2004 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-15351408

RESUMO

This study presents the outcome of patients treated by AMC-unicompartmental knee arthroplasty (UCA). The prosthesis was implanted in 361 cases for the medial or lateral compartment arthritis. The mean follow-up period was 5.5 (range: 2.3-12.5) years. Mean age at surgery was 69.5 (range: 46.3-88.6) years. Six knees were lost to follow-up (1.6%). Patients were assessed by an independent clinical observer and results were standardised using the Knee Society Rating System. The roentgenographic analyses were performed according to the Knee Society Evaluation System. Ninety-five percent of patients had no pain or slight pain at the latest follow-up, 92% had a good or excellent clinical outcome. Three knees were revised for mobile bearing dislocation after medial UCA and three for lateral mobile bearing dislocation after lateral UCA. Five revisions were necessitated by component loosening and there was one case of deep infection. The clinical results of the investigated patients demonstrate that the AMC-UCA is a successful concept with safe fixation of the prosthesis and good durability of the mobile bearings.


Assuntos
Artroplastia do Joelho/métodos , Prótese do Joelho , Osteoartrite do Joelho/cirurgia , Idoso , Idoso de 80 Anos ou mais , Feminino , Seguimentos , Humanos , Joelho/diagnóstico por imagem , Masculino , Pessoa de Meia-Idade , Satisfação do Paciente , Estudos Prospectivos , Desenho de Prótese , Radiografia , Reoperação , Resultado do Tratamento
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