Open AccessWear performance of inverted non-conforming bearings in anatomic total shoulder arthroplasty
Author(s) -
Lorenzo Banci,
Alessio Meoli,
Martin Hintner,
Hans Rudolf Bloch
Publication year - 2019
Publication title -
shoulder and elbow
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.506
H-Index - 15
eISSN - 1758-5740
pISSN - 1758-5732
DOI - 10.1177/1758573219826531
Subject(s) - medicine , arthroplasty , prosthesis , head (geology) , shoulder prosthesis , orthodontics , materials science , surgery , geology , geomorphology
Glenoid component failures still represent the most common complication in total shoulder arthroplasty. These failures depend on several factors, including ultra-high molecular weight polyethylene (UHMWPE) wear. One reason for UHMWPE wear in total shoulder arthroplasty may be the current use of a spherical prosthetic humeral head against a radially mismatched UHMWPE glenoid component, which leads to reduced glenohumeral translations, glenoid edge loading and high translational forces during shoulder motions. The aim of this study was to assess the in vitro wear of an anatomic total shoulder prosthesis with non-spherical non-conforming bearings with inverted conventional materials.