Early Clinical Outcomes with a 3-D Porous Titanium Acetabular Cup

作     者：Tatsuya Sueyoshi E. Michael Keating Merrill A. Ritter John B. Meding Matthew J. Brunsman Tatsuya Sueyoshi;E. Michael Keating;Merrill A. Ritter;John B. Meding;Matthew J. Brunsman

作者机构：Center for Hip and Knee Surgery Joint Replacement Surgeons of Indiana Research Foundation (JRSI) Mooresville IN USA 

出 版 物：《Open Journal of Orthopedics》 (矫形学期刊（英文）)

年 卷 期：2016年第6卷第6期

页      面：121-125页

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：Total Hip Arthroplasty (THA) 3-D Porous Regenerex Ringloc+ Clinical Outcome Complication 

摘      要：Cementless acetabular components are associated with a significant incidence of polyethylene wear and secondary osteolysis. 3-dimentional (3-D) porous coating and enhanced shell to a liner fixation are expected to reduce the polyethylene wear and to increase the longevity of an acetabular cup. The authors report the early clinical outcome with a cementless acetabular cup, Regenerex Ringloc+ (Zimmer Biomet, Warsaw, IN) for total hip arthroplasty. Between 2007 and 2013, the registry with 476 hip joints was reviewed retrospectively. There were 210 (48.4%) female and 224 (51.6%) male patients. The average age of the patients at the surgery was 63.9 (± 12.0) years and the average follow-up period was 2.6 years [0.5, 6.5]. At the final follow-up, there was no loosening or cup failure. There were 2 infections, 1 dislocation and 1 liner fracture, resulting in revision hip surgery. Average Harris hip score improved from 53.9 preoperatively to 91.4 postoperatively. The survivorship of Regenerex Ring Loc+ cup and the low complication rate is comparable with previous studies using other 3-D porous metal prostheses. Although this short-term outcome from the institute is very encouraging, a longer follow-up study is required.