Total Hip and Knee Arthroplasty Service, Beth Israel Medical Center, New York, New York, USA.
J Arthroplasty. 2013 Jan;28(1):7-13. doi: 10.1016/j.arth.2012.06.006. Epub 2012 Jul 31.
Cementless posteriorly stabilized (PS) total knee arthroplasty has not been widely accepted primarily because of prior unpredictable results and concern about micromotion at the tibial fixation interface caused by the cam/post interaction. A prospective consecutive series of 114 cementless, tricompartmental periapatite-coated single-radius PS implants in 110 patients with a mean age 62 years was performed to determine if initial stability and biologic fixation could be achieved. At a mean follow-up of 36 months, all implants demonstrated radiographic evidence of stable biologic fixation with no evidence of loosening, osteolysis, stress shielding, or progressive radiolucent lines. Based on these early results, cementless, periapatite-coated single-radius PS total knee arthroplasty offers marked promise.
非骨水泥后置稳定型（PS）全膝关节置换术尚未被广泛接受，主要是因为之前的不可预测结果以及对凸轮/后凸结构相互作用导致胫骨固定界面微动的担忧。前瞻性连续系列的 110 例 114 例非骨水泥、三叶型、骨膜下涂层单半径 PS 植入物，患者平均年龄 62 岁，以确定是否可以实现初始稳定性和生物固定。平均随访 36 个月，所有植入物均显示出稳定的生物固定的放射学证据，没有松动、骨溶解、应力遮挡或进行性透亮线的证据。基于这些早期结果，非骨水泥、骨膜下涂层单半径 PS 全膝关节置换术具有显著的前景。
