• 作者：E.M. Ferrer-Santacreu^a ; A.C. Moreno-Garcí ; a^a ; ^{acmoreno@jet.es} ; G. Arroyo-Salcedo^a ; J.L. Leal-Helmling^a ; P. Dí ; az-Freire^a ; E. Ferná ; ndez^b ; M. Ruiz-Yagü ; e^a ; S. Bello-Prats^a
• 关键词：Artroplastia no cementada ; Knee Society Score funcional ; Supervivencia a largo plazo
• 刊名：Revista Espa帽ola de Cirug铆a Ortop茅dica y Traumatolog铆a
• 出版年：2010
• 期刊代码：pca311_18884415
• 类别：med
• 出版时间：March-April 2010
• 卷：54
• 期：2
• 页码：106-110
• 文件大小：164 K

Purpose

To analyze the long term survivorship and functional results of a model of uncemented knee prosthesis.

Materials and methods

We carried out a prospective observational study of patients implanted between 1989 and 1996 with the Low Contact Stress Mobile-Bearing Total Knee Replacement (Depuy, Warsaw, IN, EEUU). Variables studied included: age, gender, follow-up, Knee Society Score, implant survivorship and reasons for revision. A total of 96 arthroplasties out of 127 reached the end of follow-up Mean age was 79 years. Mean follow-up was 14 years. Eleven prostheses were revised (6 following aseptic loosening and 5 because of problems with the mobile bearings). Survivorship curves were obtained considering length of follow-up, time elapsed between the primary and the revision surgery and the 鈥渞evision following loosening of a metal component鈥?and 鈥渘eed for revision鈥?events.

Results

When 鈥渘eed for revision鈥?was considered as the endpoint, survivorship curves revealed a survivorship rate of 96.45%at 9 years and 92.78%at 12 years. When the endpoint was the 鈥渘eed to revise metal components鈥?14.5-year survivorship was 93.75%. Mean Knee Society Score was 89.2 points.

Conclusion

The use of the uncemented LCS knee has resulted in excellent clinical and functional results as measured by the Knee Society Score, as well as 93.75%survivorship at 14 years and a half, considering the survivorship of the metal implant.