In silico study of glenoid perforation during total shoulder arthroplasty: the effects on stress & micromotion

Abdul Hadi Abdul Wahab, Amir Putra Md Saad, Ardiyansyah Syahrom and Mohammed Rafiq Abdul Kadir

Computer Methods in Biomechanics and Biomedical Engineering, 2020, vol. 23, issue 5, 182-190

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.

Date: 2020
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DOI: 10.1080/10255842.2019.1709828

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