Najibi Soheil, Iorio Richard, Surdam Jonathan W, Whang William, Appleby David, Healy William L
Lahey Clinic Medical Center, Burlington, Massachusetts, USA.
J Arthroplasty. 2003 Oct;18(7 Suppl 1):9-15. doi: 10.1016/s0883-5403(03)00304-8.
A group of 98 patients who had primary unilateral total knee arthroplasty (TKA) with cemented, posterior-stabilized knee implants for osteoarthritis were matched for age, diagnosis, weight, body mass index, and presence of comorbid conditions. The patients were followed up with clinical, radiographic, and outcome measures including SF-36 scales and patient outcome questionnaires. Forty-nine patients had all-polyethylene tibial implants (APT), and 49 patents had metal backed tibial implants (MBT) with similar knee implant design and articular geometry. There is no difference among these patient cohorts in the clinical performance or functional outcome of TKA using APT or MBT components in primary TKA at intermediate term follow-up. In consideration of concerns about polyethylene wear, osteolysis, and cost associated with MBT components, these findings may present an opportunity for quality improvement and cost savings with increased utilization of APT in TKA operations.
一组98例因骨关节炎接受单侧初次全膝关节置换术（TKA）并使用骨水泥固定、后稳定型膝关节植入物的患者，在年龄、诊断、体重、体重指数和合并症方面进行了匹配。通过临床、影像学和包括SF-36量表及患者结局问卷在内的结局指标对患者进行随访。49例患者使用全聚乙烯胫骨植入物（APT），49例患者使用金属背衬胫骨植入物（MBT），二者膝关节植入物设计和关节几何形状相似。在中期随访中，这些患者队列在初次TKA中使用APT或MBT组件的TKA临床性能或功能结局方面没有差异。考虑到对聚乙烯磨损、骨溶解以及与MBT组件相关成本的担忧，这些发现可能为在TKA手术中增加APT的使用以提高质量和节省成本提供机会。
