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Early Aseptic Loosening after Total Knee Replacement Using Legacy Posterior Stabilized-Flex Prosthesis / 대한정형외과학회잡지
The Journal of the Korean Orthopaedic Association ; : 35-40, 2012.
Artigo em Coreano | WPRIM | ID: wpr-653154
ABSTRACT

PURPOSE:

We analyzed the patterns and causative factors of early aseptic loosening after total knee arthroplasty (TKR) using a legacy posterior stabilized (LPS)-flex prosthesis. MATERIALS AND

METHODS:

We examined 483 cases that occurred in 311 patients who underwent TKR using LPS-flex by single surgeon between August 2001 and March 2007 and who were followed-up for at least 2 years. The loosened group included 25 cases that exhibited early aseptic loosening on radiograph, the remaining 458 cases were regarded as the control group, and analysis was performed.

RESULTS:

The mean loosening period was 34.7 months and femoral component loosening alone was found in 22 cases (88%). There were no statistically significant differences in age, body mass index, or pre-operative range of motion between the 2 groups, but varus deformity was more severe in the loosened group (mean 8.92degrees) than in the control group (mean 5.21degrees) (p=0.003). Protrusion of the femoral component proximally over posterior condyle of the distal femur were more prominent in the loosened group (mean 20.3%) than in the control group (mean 13.4%) (p=0.001).

CONCLUSION:

Early loosening after TKR using LPS-flex prosthesis developed mostly in the femoral component. Choosing a proper size for the femoral component and cutting level for the distal femur should be considered.
Assuntos

Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: Artroplastia / Próteses e Implantes / Anormalidades Congênitas / Índice de Massa Corporal / Amplitude de Movimento Articular / Artroplastia do Joelho / Fêmur / Joelho Limite: Humanos Idioma: Coreano Revista: The Journal of the Korean Orthopaedic Association Ano de publicação: 2012 Tipo de documento: Artigo

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Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: Artroplastia / Próteses e Implantes / Anormalidades Congênitas / Índice de Massa Corporal / Amplitude de Movimento Articular / Artroplastia do Joelho / Fêmur / Joelho Limite: Humanos Idioma: Coreano Revista: The Journal of the Korean Orthopaedic Association Ano de publicação: 2012 Tipo de documento: Artigo