RESUMO
OBJECTIVES: Clinical and functional outcome of the knee after Unicompartmental Knee Arthroplasty (UKA) and its correlation with lower limb mechanical axis correction. MATERIAL AND METHODS: We have reviewed the outcome of 29 UKA, corresponding to 29 patients, with an average follow-up of 4.5 years (3-6 years). The distribution was, 21 women and 8 men, 11 unicompartmental osteoarthritis, 17 femoral condyle necrosis and 1 tibial plateau necrosis, and 27 medial versus 2 lateral affected compartments. The clinical-functional situation of the knees was assessed through the Knee Society Score (KSS), and the mechanical axis through long standing film. To calculate the statistical non-parametric correlation between the different parameters, Spearman's coefficient was used. RESULTS: In the last review, the increases in the mean clinical KSS and functional KSS were significantly different, with +31.24 (±15.7) and +43.66 (±18.4) points, respectively. The mean change in the femorotibial angle was 2°±4°. We did not find any correlation with statistical significance between the average increases obtained in KS scores and: the alignment of the knee before and after the surgery; the thickness of the inserted polyethylene; the variation of the posterior tibial inclination; Insall-Salvati's index. There was no statistically significant association between the variation in the total KS score and the type of implant or the surgical technique used. CONCLUSION: We did not find any correlation between the clinical results and the radiological measurements in this population.
Assuntos
Artroplastia do Joelho/métodos , Osteoartrite do Joelho/cirurgia , Idoso , Feminino , Humanos , Estudos Longitudinais , Masculino , Recuperação de Função Fisiológica , Estudos Retrospectivos , Resultado do TratamentoRESUMO
Objetivos. Valoración clínica y funcional de la rodilla tras artroplastia unicompartimental de rodilla (AUR) y su relación con la corrección del eje mecánico del miembro inferior y otros parámetros quirúrgicos. Material y métodos. Hemos revisado la evolución de 29 AUR en 29 pacientes, con un seguimiento medio de 4,5 años (3-6 años). La distribución fue de 21 mujeres por 8 varones, 11 gonartrosis unicompartimentales postmeniscectomía por 17 necrosis condíleas femorales y 1 necrosis tibial, 27 AUR mediales y dos laterales. Se evaluó el estado clínico-funcional de las rodillas intervenidas mediante el índice de la sociedad americana de rodilla (KSS) y los ejes mediante radiografía en carga y se calculó su correlación estadística. Resultados. En el último control, la ganancia fue estadísticamente significativa, en los índices KSS clínico (31,24±15,7) y en KSS funcional (43,66±18,4) puntos. La corrección media del ángulo femorotibial fue de 2°±4°. No se encontró asociación significativa entre la variación en el KSS y el grado de alineación de la rodilla pre y postoperatorio, el grosor del polietileno elegido, la variación de la caída posterior tibial, el índice de Insall-Salvati ni el implante o técnica empleada. Conclusiones. Se observa la mejora clínica y funcional sin correlación con la corrección angular u otros parámetros quirúrgicos en esta serie (AU)
Objectives. Clinical and functional outcome of the knee after Unicompartmental Knee Arthroplasty (UKA) and its correlation with lower limb mechanical axis correction. Material and methods. We have reviewed the outcome of 29 UKA, corresponding to 29 patients, with an average follow-up of 4.5 years (3-6 years). The distribution was, 21 women and 8 men, 11 unicompartmental osteoarthritis, 17 femoral condyle necrosis and 1 tibial plateau necrosis, and 27 medial versus 2 lateral affected compartments. The clinical-functional situation of the knees was assessed through the Knee Society Score (KSS), and the mechanical axis through long standing film. To calculate the statistical non-parametric correlation between the different parameters, Spearmans coefficient was used. Results. In the last review, the increases in the mean clinical KSS and functional KSS were significantly different, with +31.24 (±15.7) and +43.66 (±18.4) points, respectively. The mean change in the femorotibial angle was 2°±4°. We did not find any correlation with statistical significance between the average increases obtained in KS scores and: the alignment of the knee before and after the surgery; the thickness of the inserted polyethylene; the variation of the posterior tibial inclination; Insall-Salvatis index. There was no statistically significant association between the variation in the total KS score and the type of implant or the surgical technique used. Conclusion. We did not find any correlation between the clinical results and the radiological measurements in this population (AU)
