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Radiographic parameters associated with excellent versus poor range of motion outcomes following reverse shoulder arthroplasty.
Radiographic parameters associated with excellent versus poor range of motion outcomes following reverse shoulder arthroplasty.
- Source :
- Shoulder & Elbow; Feb2022, Vol. 14 Issue 1, p39-47, 9p
- Publication Year :
- 2022
-
Abstract
- Background: The purpose was to evaluate the relationship of component size and position to postoperative range of motion following reverse shoulder arthroplasty. The hypothesis was that increased lateralization, larger glenospheres, and a decreased acromiohumeral distance would be associated with excellent postoperative range of motion. Methods: A retrospective multicenter study was performed at a minimum of one year postoperatively on 160 patients who underwent primary reverse shoulder arthroplasty with a 135° humeral component. Outcomes were stratified based on postoperative forward flexion and external rotation into excellent (n = 42), defined as forward flexion >140° and external rotation > 30°, or poor (n = 36), defined as forward flexion <100° and external rotation < 15°. Radiographic measurements and component features were compared between the two groups. Results: A larger glenosphere size was associated with an excellent outcome (p = 0.009). A 2-mm posterior offset humeral cup (p = 0.012) and an increased inferior glenosphere overhang (3.1 mm vs 1.4 mm; p = 0.002) were also associated with excellent outcomes. Humeral lateralization and distalization were not associated with an excellent outcome. Conclusion: L arger glenosphere size and inferior positioning as well as posterior humeral offset are associated with improved postoperative range of motion following reverse shoulder arthroplasty. Level of Evidence: Level 3, retrospective comparative study. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 17585732
- Volume :
- 14
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Shoulder & Elbow
- Publication Type :
- Academic Journal
- Accession number :
- 155129097
- Full Text :
- https://doi.org/10.1177/1758573220936234