Acromial Morphology Does Not Correlate with Age at Time of Rotator Cuff Tear: A Cross-Sectional Study
Document Type
Journal Article
Publication Date
11-1-2023
Journal
Shoulder & elbow
Volume
15
Issue
4 Suppl
DOI
10.1177/17585732221077944
Keywords
acromial index; critical shoulder angle; lateral acromial angle; rotator cuff; shoulder arthroscopy
Abstract
BACKGROUND: The purpose of this study was to determine if scapular anatomy differs between younger and older patients with atraumatic full-thickness supraspinatus tears. METHODS: The critical shoulder angle, acromial index and lateral acromial angle were measured on standardized radiographs of two groups of patients who underwent arthroscopic repair of full-thickness degenerative supraspinatus tears. Group 1 included 61 patients under the age of 50 years while Group 2 included 45 patients over the age of 70 years. The mean critical shoulder angle, acromial index, and lateral acromial angle were then compared. RESULTS: There was no significant difference between groups for the critical shoulder angle (p = .433), acromial index (p = .881) or lateral acromial angle (p = .263). Interobserver reliability for critical shoulder angle, acromial index, and lateral acromial angle was nearly perfect (interclass correlation coefficient 0.996, 0.996, 0.998, respectively). No significant correlation existed between age and critical shoulder angle (p = .309), acromial index (p = .484) or lateral acromial angle (p = .685). DISCUSSION: While the critical shoulder angle and acromial index were found to be high and in the typical range for patients with rotator cuff tears in both groups, there were no significant differences in acromial morphology between Groups 1 and 2.
APA Citation
Scanaliato, John P.; Dunn, John C.; Polmear, Michael M.; Czajkowski, Hunter; Green, Clare K.; Tomaino, Matthew M.; and Parnes, Nata, "Acromial Morphology Does Not Correlate with Age at Time of Rotator Cuff Tear: A Cross-Sectional Study" (2023). GW Authored Works. Paper 3861.
https://hsrc.himmelfarb.gwu.edu/gwhpubs/3861
Department
School of Medicine and Health Sciences Student Works