Parsons Christopher, Batson Ryan, Reighard Shane, Tanner Stephanie, Snider Becky, Pace Thomas B
University of South Carolina, School of Medicine , Greenville, SC, USA.
Department of Orthopedics, Greenville Health System , SC, USA.
Orthop Rev (Pavia). 2014 May 22;6(2):5334. doi: 10.4081/or.2014.5334. eCollection 2014 Apr 22.
This report examines the clinical performance of three very similar total hip arthroplasty designs with distinctly different bearing surfaces used over the course 10-17 years. Clinical outcomes assessments for each group are compared in the context of varying implant related costs related to the latest technology at the time of surgery. Eighty-one surgeries were studied and differ by bearing surface. In this study, 36 hips are ceramic on polyethylene, 27 are metal on polyethylene and 18 are metal on metal. All polyethylene components are nonhighly cross-linked. The ceramic on polyethylene group has younger patients, on average, and higher percentage of patients with significant polyethylene wear. These groups have an average follow-up time of 8.6 years when assessing functional hip scores, thigh pain, groin pain, revision surgeries and radiographic osteolysis. The implant purchasing cost at the time of surgery was assessed to determine if a correlation exists between outcomes and the more technologically advanced implants use at the time of surgery. Based on midterm clinical outcome assessment, no correlation between initial hospital cost and clinical outcomes of one bearing surface over another can be found.
本报告研究了三种非常相似的全髋关节置换术设计在10至17年期间的临床性能，这些设计采用了截然不同的承重表面。在与手术时最新技术相关的不同植入物相关成本的背景下，对每组的临床结果评估进行了比较。共研究了81例手术，这些手术因承重表面不同而有所差异。在本研究中，36例髋关节采用陶瓷对聚乙烯，27例采用金属对聚乙烯，18例采用金属对金属。所有聚乙烯部件均为非高度交联。陶瓷对聚乙烯组患者平均年龄较轻，聚乙烯显著磨损的患者比例较高。在评估髋关节功能评分、大腿疼痛、腹股沟疼痛、翻修手术和影像学骨溶解时，这些组的平均随访时间为8.6年。评估了手术时的植入物采购成本，以确定结果与手术时使用的技术更先进的植入物之间是否存在相关性。基于中期临床结果评估，未发现初始医院成本与一种承重表面和另一种承重表面的临床结果之间存在相关性。
