Back to Search
Start Over
Acromial and glenoid morphology in glenohumeral osteoarthritis: a three-dimensional analysis.
- Source :
-
JSES international [JSES Int] 2021 Mar 21; Vol. 5 (3), pp. 398-405. Date of Electronic Publication: 2021 Mar 21 (Print Publication: 2021). - Publication Year :
- 2021
-
Abstract
- Background: The purpose of this study was to determine the association between glenohumeral osteoarthritis (GHOA) and three-dimensional acromial and glenoid morphology.<br />Methods: In this retrospective study, we compared computed tomographic studies of three groups of scapulae: normal healthy, mild GHOA (Samilson-Prieto grade 1), and severe GHOA (Samilson-Prieto grade 3). All scans were segmented to create three-dimensional reconstructions. From these models, critical shoulder angle and acromial offset were measured, as normalized to scapular height. The coronal plane inclination of the glenoid was measured using a glenoid sphere-fit method. Reliability was confirmed via intraclass correlation coefficients > 0.75.<br />Results: Eighty scapulae were included: 30 normal, 20 mild GHOA, and 30 severe GHOA. There were no differences in acromial offset between the normal group and either the mild-GHOA group or the severe-GHOA group. The severe-GHOA group had a smaller critical shoulder angle than either the normal (30 ± 5° vs. 34 ± 4°, P  = .003) or mild-GHOA groups (34 ± 4°, P  = .020), but the normal and mild-GHOA groups did not differ ( P  = .965). The severe-GHOA group had more inferiorly inclined glenoids than either the normal (7 ± 6° vs. 12 ± 5°, P  = .002) or mild-GHOA groups (14 ± 5°, P  ≤ .001), but the normal and mild-GHOA groups did not differ ( P  = .281).<br />Conclusion: Normal and severe-GHOA shoulders differ in critical shoulder angle and glenoid inclination but not acromial offset. The lack of a difference in critical shoulder angle or inferior inclination between mild-GHOA and normal groups calls into question whether inclination and critical shoulder angle differences predate severe GHOA.<br /> (© 2021 The Author(s).)
Details
- Language :
- English
- ISSN :
- 2666-6383
- Volume :
- 5
- Issue :
- 3
- Database :
- MEDLINE
- Journal :
- JSES international
- Publication Type :
- Academic Journal
- Accession number :
- 34136846
- Full Text :
- https://doi.org/10.1016/j.jseint.2021.01.006