There has been renewed interest in reverse shoulder arthroplasty for the treatment of glenohumeral arthritis with concomitant rotator cuff deficiency. Failure of the prosthesis at the glenoid attachment site remains a concern. The purpose of this study was to examine glenoid component stability with regard to the angle of implantation. This investigation entailed a biomechanical analysis to evaluate forces and micromotion in glenoid components attached to 12 polyurethane blocks at -15 degrees, 0 degrees, and +15 degrees of superior and inferior tilt. The 15 degrees inferior tilt had the most uniform compressive forces and the least amount of tensile forces and micromotion when compared with the 0 degrees and 15 degrees superiorly tilted baseplate. Our results suggest that implantation with an inferior tilt will reduce the incidence of mechanical failure of the glenoid component in a reverse shoulder prosthesis.





Polls results
1

On a scale of 1 to 10, rate how much this article will change your clinical practice?

NO change
BIG change
100% Article relates to my practice (3/3)
0% Article does not relate to my practice (0/3)
0% Undecided (0/3)
2

Will this article lead to more cost-effective healthcare?

0% Yes (0/3)
100% No (3/3)
0% Undecided (0/3)
3

Was this article biased? (commercial or personal)

0% Yes (0/3)
100% No (3/3)
0% Undecided (0/3)
4

What level of evidence do you think this article is?

0% Level 1 (0/3)
0% Level 2 (0/3)
33% Level 3 (1/3)
33% Level 4 (1/3)
33% Level 5 (1/3)