Resultados de la artroplastia total de rodilla no cementada en pacientes mayores de 70 años / Results of cementless total knee arthroplasty in patients over 70 years of age

Objetivo: Analizar los resultados clínicos, radiológicos, la supervivencia y las complicaciones obtenidos en pacientes de 70 años o más intervenidos mediante artroplastia total de rodilla (ATR) no cementada. Material y método: Se realizó un estudio observacional de pacientes intervenidos entre enero 2014-diciembre 2016 con el modelo Natural Knee (Zimmer®, Estados Unidos). Las variables principales fueron la puntuación de Oxford Knee Score y la de la escala visual analógica, la presencia de radiolucencias, complicaciones, supervivencia y motivo de revisión. Resultados: De 104 ATR, 86 estuvieron disponibles para su revisión. La mediana de edad fue de 76 años. El seguimiento medio fue de 5,4 años (rango 3,7-6,9). La puntuación del Oxford Knee Score presentó una mediana de 17 (rango 0-40) prequirúrgica y 37 (rango 5-48) posquirúrgica, p<0,001. El 87,2% de los pacientes obtuvo una mejoría clínicamente significativa. La mediana de la puntuación de la escala visual analógica fue 8 (rango 4-10) prequirúrgica y 2 (rango 1-9) posquirúrgica, p<0,001. El 88,3% de los pacientes obtuvo una disminución clínicamente significativa. Alrededor del platillo tibial, a los 3 meses de la cirugía, el 55,81% de las ATR presentaron radiolucencias, al final del seguimiento las radiolucencias estuvieron presentes en el 30,23% de las ATR. La supervivencia por todas las causas fue del 91,86% a los 77,2 meses y del 96,5% por aflojamiento aséptico. Conclusión: Las prótesis de rodilla no cementadas son una opción válida en pacientes de 70 o más años, presentando buenos resultados clínicos, radiológicos y de supervivencia.(AU)

Objective: To analyze the clinical and radiologic results, the survival and complications obtained in 70 year or older patients who underwent cementless total knee arthroplasty (TKA). Material and method: An observational study of patients operated between January 2014 and December 2016 was carried out according to the Natural Knee model (Zimmer®, USA). The main variables were the Oxford Knee Score, the visual analog scale, the presence of radiolucencies, complications, survival and reasons for revision. Results: Of 104 TKA, 86 were available for revision. The median age was 76 years. The mean follow-up was 5.4 years (range 3.7-6.9). The Oxford Knee Score punctuation showed a median of 17 presurgical (range 0-40) and 37 post surgical (range 5-48), P<.001. The 87.2% of the patients obtained a clinically significant improvement. The median visual analog scale punctuation was 8 for presurgical (range 4-10) and 2 for post surgical (range 1-9), P<.001. The 88.3% of the patients obtained a clinically significant decrease. Three months after the surgery, the 55.81% of the TKAs presented radiolucencies around the tibial plateau. At the end of the follow-up, radiolucencies were present in 30.23% of the TKAs. Survival from all causes was 91.86% at 77.2 months and 96.5% due to aseptic loosening. Conclusion: Cementless knee prostheses are a valid option in patients aged 70 or older, presenting good clinical, radiological and survival results.(AU)

[Translated article] Results of cementless total knee arthroplasty in patients over 70 years of age / Resultados de la artroplastia total de rodilla no cementada en pacientes mayores de 70 años

Objetivo: Analizar los resultados clínicos, radiológicos, la supervivencia y las complicaciones obtenidos en pacientes de 70 años o más intervenidos mediante artroplastia total de rodilla (ATR) no cementada. Material y método: Se realizó un estudio observacional de pacientes intervenidos entre enero 2014-diciembre 2016 con el modelo Natural Knee (Zimmer®, Estados Unidos). Las variables principales fueron la puntuación de Oxford Knee Score y la de la escala visual analógica, la presencia de radiolucencias, complicaciones, supervivencia y motivo de revisión. Resultados: De 104 ATR, 86 estuvieron disponibles para su revisión. La mediana de edad fue de 76 años. El seguimiento medio fue de 5,4 años (rango 3,7-6,9). La puntuación del Oxford Knee Score presentó una mediana de 17 (rango 0-40) prequirúrgica y 37 (rango 5-48) posquirúrgica, p<0,001. El 87,2% de los pacientes obtuvo una mejoría clínicamente significativa. La mediana de la puntuación de la escala visual analógica fue 8 (rango 4-10) prequirúrgica y 2 (rango 1-9) posquirúrgica, p<0,001. El 88,3% de los pacientes obtuvo una disminución clínicamente significativa. Alrededor del platillo tibial, a los 3 meses de la cirugía, el 55,81% de las ATR presentaron radiolucencias, al final del seguimiento las radiolucencias estuvieron presentes en el 30,23% de las ATR. La supervivencia por todas las causas fue del 91,86% a los 77,2 meses y del 96,5% por aflojamiento aséptico. Conclusión: Las prótesis de rodilla no cementadas son una opción válida en pacientes de 70 o más años, presentando buenos resultados clínicos, radiológicos y de supervivencia.(AU)

Objective: To analyze the clinical and radiologic results, the survival and complications obtained in 70 year or older patients who underwent cementless total knee arthroplasty (TKA). Material and method: An observational study of patients operated between January 2014 and December 2016 was carried out according to the Natural Knee model (Zimmer®, USA). The main variables were the Oxford Knee Score, the visual analog scale, the presence of radiolucencies, complications, survival and reasons for revision. Results: Of 104 TKA, 86 were available for revision. The median age was 76 years. The mean follow-up was 5.4 years (range 3.7-6.9). The Oxford Knee Score punctuation showed a median of 17 presurgical (range 0-40) and 37 post surgical (range 5-48), P<.001. The 87.2% of the patients obtained a clinically significant improvement. The median visual analog scale punctuation was 8 for presurgical (range 4-10) and 2 for post surgical (range 1-9), P<.001. The 88.3% of the patients obtained a clinically significant decrease. Three months after the surgery, the 55.81% of the TKAs presented radiolucencies around the tibial plateau. At the end of the follow-up, radiolucencies were present in 30.23% of the TKAs. Survival from all causes was 91.86% at 77.2 months and 96.5% due to aseptic loosening. Conclusion: Cementless knee prostheses are a valid option in patients aged 70 or older, presenting good clinical, radiological and survival results.(AU)

[Translated article] Results of cementless total knee arthroplasty in patients over 70 years of age.

OBJECTIVE: To analyse the clinical and radiologic results, the survival and complications obtained in 70 year or older patients who underwent cementless total knee arthroplasty (TKA). MATERIAL AND METHOD: An observational study of patients operated between January 2014 and December 2016 was carried out according to the Natural Knee model (Zimmer®, USA). The main variables were the Oxford Knee Score, the visual analogue scale, the presence of radiolucencies, complications, survival and reasons for revision. RESULTS: Of 104 TKA, 86 were available for revision. The median age was 76 years. The mean follow-up was 5.4 years (range 3.7-6.9). The Oxford Knee Score punctuation showed a median of 17 presurgical (range 0-40) and 37 post surgical (range 5-48), P<.001. The 87.2% of the patients obtained a clinically significant improvement. The median visual analogue scale punctuation was 8 for presurgical (range 4-10) and 2 for post surgical (range 1-9), P<.001. The 88.3% of the patients obtained a clinically significant decrease. Three months after the surgery, the 55.81% of the TKAs presented radiolucencies around the tibial plateau. At the end of the follow-up, radiolucencies were present in 30.23% of the TKAs. Survival from all causes was 91.86% at 77.2 months and 96.5% due to aseptic loosening. CONCLUSION: Cementless knee prostheses are a valid option in patients aged 70 or older, presenting good clinical, radiological and survival results.

Results of cementless total knee arthroplasty in patients over 70 years of age. / Resultados de la artroplastia total de rodilla no cementada en pacientes mayores de 70 años.

OBJECTIVE: To analyze the clinical and radiologic results, the survival and complications obtained in 70 year or older patients who underwent cementless total knee arthroplasty (TKA). MATERIAL AND METHOD: An observational study of patients operated between January 2014 and December 2016 was carried out according to the Natural Knee model (Zimmer®, USA). The main variables were the Oxford Knee Score, the visual analog scale, the presence of radiolucencies, complications, survival and reasons for revision. RESULTS: Of 104 TKA, 86 were available for revision. The median age was 76 years. The mean follow-up was 5.4 years (range 3.7-6.9). The Oxford Knee Score punctuation showed a median of 17 presurgical (range 0-40) and 37 post surgical (range 5-48), P<.001. The 87.2% of the patients obtained a clinically significant improvement. The median visual analog scale punctuation was 8 for presurgical (range 4-10) and 2 for post surgical (range 1-9), P<.001. The 88.3% of the patients obtained a clinically significant decrease. Three months after the surgery, the 55.81% of the TKAs presented radiolucencies around the tibial plateau. At the end of the follow-up, radiolucencies were present in 30.23% of the TKAs. Survival from all causes was 91.86% at 77.2 months and 96.5% due to aseptic loosening. CONCLUSION: Cementless knee prostheses are a valid option in patients aged 70 or older, presenting good clinical, radiological and survival results.