Fifteen-year Results of Precoated Femoral Stem in Primary Hybrid Total Hip Arthroplasty
Clinics in Orthopedic Surgery
;
: 110-117, 2013.
Artigo
em Inglês
| WPRIM
| ID: wpr-186820
ABSTRACT
BACKGROUND:
There has been controversy whether methylmethacrylate precoating of the cemented femoral stem is a solution for aseptic loosening or rather contributes to increased failure rates in cemented total hip arthroplasties.METHODS:
On a retrospective basis, we analyzed 76 primary hybrid total hip arthroplasties from 63 patients with precoated, cemented femoral stems between October 1990 and December 1995. The mean age of the patients was 46.8 years (range, 22 to 77 years) with a minimum follow-up of 14 years (mean, 15.5 years; range, 14 to 19.5 years). Third generation cementing techniques were employed in all cases.RESULTS:
Twenty-four out of 76 cases (31.6%) showed aseptic loosening of the femoral stems, of which 23 stems were revised at an average revision time of 8 years (range, 3 to 14.8 years). The main mode of loosening was cement-stem interface failure in 22 hips (91.7%). Twenty-one out of 24 failed hips (87.5%) demonstrated C2 cementing grades (p < 0.001). Kaplan-Meier survivorship analysis using radiographic aseptic loosening of the femoral stem as the endpoint for failure showed survival rates of 76.5% at 10 years (95% confidence interval [CI], 71.4 to 81.6) and 63.2% at 19 years (95% CI, 57.3 to 69.1).CONCLUSIONS:
An early failure of the precoated femoral stem in this study was mainly due to an insufficient cementing technique. Achievement of good cement mantle may improve the survival rates.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Falha de Prótese
/
Estudos Retrospectivos
/
Resultado do Tratamento
/
Análise de Falha de Equipamento
/
Artroplastia de Quadril
/
Metilmetacrilato
/
Materiais Revestidos Biocompatíveis
/
Estimativa de Kaplan-Meier
/
Necrose da Cabeça do Fêmur
/
Prótese de Quadril
Tipo de estudo:
Estudo observacional
Limite:
Adulto
/
Idoso
/
Aged80
/
Feminino
/
Humanos
/
Masculino
Idioma:
Inglês
Revista:
Clinics in Orthopedic Surgery
Ano de publicação:
2013
Tipo de documento:
Artigo
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