Assuntos
Acidentes por Quedas , Luxação do Quadril , Fraturas do Quadril/diagnóstico , Quadril/diagnóstico por imagem , Manipulação Ortopédica/métodos , Idoso , Diagnóstico Diferencial , Luxação do Quadril/diagnóstico , Luxação do Quadril/etiologia , Luxação do Quadril/fisiopatologia , Luxação do Quadril/terapia , Humanos , Masculino , Parestesia/diagnóstico , Parestesia/etiologia , Radiografia/métodos , Amplitude de Movimento Articular , Recuperação de Função Fisiológica , Tomografia Computadorizada por Raios X/métodos , Resultado do TratamentoAssuntos
Fraturas do Fêmur/cirurgia , Fraturas do Quadril/cirurgia , Fraturas por Osteoporose/complicações , Idoso de 80 Anos ou mais , Pinos Ortopédicos , Parafusos Ósseos , Diáfises , Feminino , Fraturas do Fêmur/diagnóstico por imagem , Articulação do Quadril/diagnóstico por imagem , Humanos , RadiografiaRESUMO
BACKGROUND: This biomechanical study examined difference in cement pressures generated by flanged and unflanged acetabular cups in hip arthroplasty. METHOD: Using a model acetabulum, cement was inserted and pressurised followed by cup insertion and pressurisation. Pressures were recorded using transducers in the acetabulum. We compared Charnley Ogee (flanged), Exeter contemporary (flanged) and Exeter low profile (unflanged) cups using Simplex and CMW1 cements in turn. RESULTS: Using Simplex, Charnley Ogee cup generated highest initial peak pressure and overall mean pressure. Exeter unflanged cup generated higher initial and mean pressures compared to Exeter flanged cup. With CMW, there was no significant difference between the pressures generated by the cups. CONCLUSIONS: Our experiment suggests that flanged cups do not consistently generate significantly higher cement pressures compared to unflanged cups.
Assuntos
Acetábulo/cirurgia , Artroplastia de Quadril/instrumentação , Cimentos Ósseos , Prótese de Quadril , Acetábulo/fisiopatologia , Artroplastia de Quadril/métodos , Fenômenos Biomecânicos , Cimentação , Humanos , Modelos Anatômicos , Pressão , Desenho de Prótese , Transdutores de PressãoRESUMO
We performed a survival analysis on 354 cemented primary press-fit condylar total knee arthroplasties in 277 patients with prospective follow-up (mean, 8.8 years; range, 0.3-16.9 years). The number of patients alive reaching 15 years at follow-up for survival analysis was 15. The cumulative survival rate at 15 years was 81.7% (95% confidence interval, 72.1%-88.5%), using revision for all causes as our end point. Indications for revision in our patient group were aseptic loosening 4.5%, infection 2.3%, and exchange of polyethylene insert 1.1%. Our results indicate that the cemented press-fit condylar total knee arthroplasty has a good long-term survival, at 15 years, based on revision as the end point.
