The effect of post-operative mechanical axis alignment on the survival of primary total knee replacements after a follow-up of 15 years.
J Bone Joint Surg Br
; 93(9): 1217-22, 2011 Sep.
Article
em En
| MEDLINE
| ID: mdl-21911533
ABSTRACT
Correct positioning and alignment of components during primary total knee replacement (TKR) is widely accepted to be an important predictor of patient satisfaction and implant durability. This retrospective study reports the effect of the post-operative mechanical axis of the lower limb in the coronal plane on implant survival following primary TKR. A total of 501 TKRs in 396 patients were divided into an aligned group with a neutral mechanical axis (± 3°) and a malaligned group where the mechanical axis deviated from neutral by > 3°. At 15 years' follow-up, 33 of 458 (7.2%) TKRs were revised for aseptic loosening. Kaplan-Meier survival analysis showed a weak tendency towards improved survival with restoration of a neutral mechanical axis, but this did not reach statistical significance (p = 0.47). We found that the relationship between survival of a primary TKR and mechanical axis alignment is weaker than that described in a number of previous reports.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Artroplastia do Joelho
/
Cirurgia Assistida por Computador
/
Articulação do Joelho
/
Prótese do Joelho
Tipo de estudo:
Observational_studies
/
Prognostic_studies
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Risk_factors_studies
Limite:
Adult
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Aged
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Aged80
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
J Bone Joint Surg Br
Ano de publicação:
2011
Tipo de documento:
Article
País de afiliação:
Reino Unido