Positioning and Tilting of the Glenosphere in Reverse Total Shoulder Arthroplasty and its Impact on Functional Activities in Patients with Rotator Cuff Arthropathy
DOI:
https://doi.org/10.21270/archi.v12i12.6319Keywords:
Glenoid cavity, Arthroplasty, Shoulder, Rotator Cuff Tear ArthropathyAbstract
Background: Reverse shoulder arthroplasty as management of rotator cuff arthropathy has been widely used and studied. Its positioning according to the glenoid inclination component is strictly related to postoperative outcomes. This study aims to evaluate the postoperative outcomes of the glenosphere inclination in patients submitted to reverse shoulder arthroplasty. Methods: a retrospective study of 29 patients submited to reverse shoulder arthroplasty to management of rotator cuff arthropathy. The patients had their glenosphere positioning angle measured, analyzed, and divided into groups according to the degree of inclination. The evaluation included The Constant Score (CS), Subjective Shoulder Value, scapular notching rate classificatied by Sirveaux (2004), and range of movement (ROM). Results: We did not observe any statistical difference between the groups for active anterior elevation (p=0.675; Student's t-test) nor mean active external rotation with the arm adducted (p=0.485; Student's t-test). The group with a lower slope had an CS of 67.94±19.38, and the group with a higher slope had an CS of 81.34±16.16, with no statistical difference (p=0.066). Conclusion: The positioning of the glenoid plate and the inclination of the glenosphere are crucial in the postoperative outcome. However, we did not present a statistical difference in the Functional Score.
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