Midterm Results of a Femoral Stem With a Modular Neck Design: Clinical Outcomes and Metal Ion Analysis
Publication Date
2014
Journal Title
J Arthroplasty
Abstract
Modular neck femoral stems have a higher-than-anticipated rate of failure in registry results, but large single-center cohort studies are lacking. This is a retrospective cohort of 152 hips implanted with a single titanium stem with a modular titanium neck, presenting clinical, radiographic, and metal ion results at a mean 4.5-year follow-up. Five hips were revised during the study period, for an overall Kaplan-Meier survival of 0.894 at 8 years. There was one modular neck fracture (0.66%), but others demonstrated corrosion or adverse tissue reaction. Serum metal levels demonstrated wide variability. Despite good clinical results in the majority of patients, we confirmed an increased rate of femoral revision at mid-term follow-up, and therefore urge caution in the use of this particular stem design. (C) 2014 Elsevier Inc. All rights reserved.
Volume Number
29
Issue Number
9
Pages
1768-1773
Document Type
Article
EPub Date
2014/06/05
Status
Northwell Researcher
Facility
Northwell Health
Primary Department
Orthopedic Surgery
PMID
DOI
10.1016/j.arth.2014.04.039