"Biomechanical Comparison of a Novel Circular Glenoid With Peripheral R" by Adam Z. Khan, Andrew Jawa et al.
 

Biomechanical Comparison of a Novel Circular Glenoid With Peripheral Ring Fixation to a Standard Anchor Pegged Glenoid in Total Shoulder Arthroplasty

Document Type

Article

Publication Date

3-2024

Publication Title

Seminars in Arthroplasty: JSES

Abstract

Background: Current standard total shoulder pegged glenoid component designs have a high rate of loosening, which accounts for the most common long-term reason for surgical failure. Glenoid design, method of fixation, and implantation version all play a role in component stability. This study aimed to evaluate the biomechanical stability of a novel circular glenoid with peripheral ring fixation and compare to a standard anchor pegged glenoid both directly and to historical biomechanical data. Additionally, we compared the estimated bone removal for the glenoid design types. Methods: Biomechanical testing was performed to assess the circular glenoid with peripheral ring fixation with regards to stability and resistance to “rocking horse” effect, torsional loosening, resistance to torque dissociation, and axial pullout strength. This was compared directly (pullout strength) and to historical (“rocking horse”) biomechanical data obtained for a standard anchor pegged glenoid. A 3D Computer-Aided Design model of five different scapula sizes and shapes was also utilized to estimate volume bone removed when using implant specific prep instrumentation for each glenoid system.

Volume

34

Issue

1

First Page

122

Last Page

129

DOI

10.1053/j.sart.2023.09.007

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