Long-Term Follow-Up Results of a Second-Generation Cementless Femoral Prosthesis with a Collar and Straight Distal Fixation Channels
Yonsei Medical Journal
;
: 186-192, 2012.
Artigo
em Inglês
| WPRIM
| ID: wpr-145833
ABSTRACT
PURPOSE:
We evaluated the results of more than 10 years of follow-up of total hip arthroplasty using a second-generation cementless femoral prosthesis with a collar and straight distal fixation channels. MATERIALS ANDMETHODS:
One hundred five patients (129 hips) who underwent surgery between 1991 and 1996 for primary total hip arthroplasty using cementless straight distal fluted femoral stems were followed for more than 10 years. Ninety-four hips in 80 patients were available for clinical and radiologic analysis. The mean age at the time of surgery was 47 years, and the mean duration of follow-up was 14.3 years.RESULTS:
The mean Harris hip scores had improved from 58 points to 88 points at the time of the 10-year follow-up. Activity-related thigh pain was reported in nine hips (10%). At the last follow-up, 93 stems (99%) were biologically stable and one stem (1%) was revised because of loosening. No hip had distal diaphyseal osteolysis. Proximal femoral stress-shielding was reported in 86 hips (91%). We found no significant relationship between collar-calcar contact and thigh pain, stem fixation status, or stress-shielding. The cumulative survival of the femoral stem was 99% (95% confidence interval, 98-100%) after 10 years.CONCLUSION:
The long-term results of total hip arthroplasty using a second-generation cementless femoral prosthesis with a collar and straight distal fixation channels were satisfactory; however, the high rate of proximal stress-shielding and the minimal effect of the collar indicate the need for some changes in the stem design.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Fatores de Tempo
/
Cimentos Ósseos
/
Osteoartrite do Quadril
/
Seguimentos
/
Resultado do Tratamento
/
Artroplastia de Quadril
/
Fraturas do Colo Femoral
/
Necrose da Cabeça do Fêmur
/
Prótese de Quadril
Tipo de estudo:
Estudo observacional
/
Estudo prognóstico
Limite:
Adulto
/
Idoso
/
Feminino
/
Humanos
/
Masculino
Idioma:
Inglês
Revista:
Yonsei Medical Journal
Ano de publicação:
2012
Tipo de documento:
Artigo
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