Affiliations 

  • 1 Department of Biomedical Engineering, School of Biomedical Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
  • 2 Medical Devices and Technology Centre (MEDITEC), Institute of Human Centered Engineering (iHumEn), Universiti Teknologi Malaysia, Skudai, Johor, Malaysia
Comput Methods Biomech Biomed Engin, 2020 Apr;23(5):182-190.
PMID: 31910663 DOI: 10.1080/10255842.2019.1709828

Abstract

Glenoid perforation is not the intended consequence of the surgery and must be avoided. The analysis on biomechanical aspect of glenoid vault perforation remains unknown. The purpose of this study is to determine the impact of glenoid perforation towards stress distribution and micromotion at the interfaces. Eight glenoid implant models had been constructed with various size, number and type of fixation. A load of 750 N was applied to centre, superior-anterior and superior-posterior area. Implant perforation had minimal impact on stress distribution and micromotion at the interfaces. However, cement survival rate for implant without perforation was the highest with a difference of up to 37% compared to other perforated models. Besides that, implant fixation and high stresses at the implant had more of an impact on implant instability than implant perforation. As a conclusion, glenoid perforation did not influence the stress distribution and micromotion, but, it reduced cement survival rate and increase the stress critical volume.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.