Charalambous C P, Abiddin Z, Mills S P, Rogers S, Sutton P, Parkinson R
Blackpool Victoria Hospital, Whinney Heys Road, Blackpool FY3 8NR, UK.
J Bone Joint Surg Br. 2011 Apr;93(4):484-9. doi: 10.1302/0301-620X.93B4.25899.
The low contact stress patellofemoral replacement consists of a trochlear component and a modular patellar component which has a metal-backed mobile polyethylene bearing. We present the early results of the use of this prosthesis for established isolated patellofemoral arthritis in 51 consecutive patellofemoral replacements in 35 patients. The mean follow-up was 25 months (5 to 60). The estimated survival rate at three years was 63% (95% confidence interval 47 to 80) with revision as the endpoint and 46% (95% confidence interval 30 to 63) with revision and ongoing moderate or severe pain as the endpoint. The early results of the use of the low contact stress patellofemoral replacement are disappointing with a high rate of revision. We cannot therefore recommend its use.
低接触应力髌股关节置换假体由一个滑车部件和一个模块化髌骨部件组成，该髌骨部件有一个金属背衬的可移动聚乙烯衬垫。我们展示了在35例患者的51例连续髌股关节置换中，使用这种假体治疗已确诊的孤立性髌股关节炎的早期结果。平均随访时间为25个月（5至60个月）。以翻修为终点，三年时的估计生存率为63%（95%置信区间47至80）；以翻修和持续存在中度或重度疼痛为终点，三年时的估计生存率为46%（95%置信区间30至63）。低接触应力髌股关节置换的早期使用结果令人失望，翻修率很高。因此，我们不推荐使用它。
