Hydroxyapatite-coated versus grit-blasted femoral stems. a prospective, randomised study using EBRA-FCA.
J Bone Joint Surg Br
; 83(7): 979-87, 2001 Sep.
Article
em En
| MEDLINE
| ID: mdl-11603537
ABSTRACT
We have carried out a prospective, randomised study designed to compare the long-term stability of the stem of cementless femoral implants with differing surface configurations. A total of 50 hips (46 patients) was randomised into two groups, according to whether the medullary stem had been grit blasted (GB) or coated with hydroxyapatite (HA). Both femoral prostheses were of the same geometrical design. We used Ein Bild Roentgen Analyse femoral component analysis (EBRA-FCA) to assess the stability of the stem. The mean follow-up was for 8.66 years. The mean migration of the stem was 1.26 mm in the HA group compared with 2.57 mm in the GB group (Mann-Whitney U test, p = 0.04). A mixed model ANOVA showed that the development of subsidence was statistically different in the two groups during the first 24 months. After this subsidence increased in both groups with no difference between them. Our results indicate that, with the same design of stem, HA coating enhanced the stability of the femoral stem when compared with GB stems.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Cabeça do Fêmur
/
Prótese de Quadril
/
Hidroxiapatitas
Tipo de estudo:
Clinical_trials
/
Diagnostic_studies
/
Observational_studies
/
Prognostic_studies
Limite:
Adult
/
Aged
/
Aged80
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
J Bone Joint Surg Br
Ano de publicação:
2001
Tipo de documento:
Article
País de afiliação:
França