Association of the Posterior Acromion Extension with Glenoid Retroversion: A CT Study in Normal and Osteoarthritic Shoulders.

Details

Serval ID
serval:BIB_BE6DC28A0C40
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Association of the Posterior Acromion Extension with Glenoid Retroversion: A CT Study in Normal and Osteoarthritic Shoulders.
Journal
Journal of clinical medicine
Author(s)
Terrier A., Becce F., Vauclair F., Farron A., Goetti P.
ISSN
2077-0383 (Print)
ISSN-L
2077-0383
Publication state
Published
Issued date
12/01/2022
Peer-reviewed
Oui
Volume
11
Number
2
Pages
351.
Language
english
Notes
Publication types: Journal Article
Publication Status: epublish
Abstract
Posterior eccentric glenoid wear is associated with higher complication rates after shoulder arthroplasty. The recently reported association between the acromion shape and glenoid retroversion in both normal and osteoarthritic shoulders remains controversial. The three-dimensional coordinates of the angulus acromialis (AA) and acromioclavicular joint were examined in the scapular coordinate system. Four acromion angles were defined from these two acromion landmarks: the acromion posterior angle (APA), acromion tilt angle (ATA), acromion length angle (ALA), and acromion axial tilt angle (AXA). Shoulder computed tomography scans of 112 normal scapulae and 125 patients with primary glenohumeral osteoarthritis were analyzed with simple and stepwise multiple linear regressions between all morphological acromion parameters and glenoid retroversion. In normal scapulae, the glenoid retroversion angle was most strongly correlated with the posterior extension of the AA (R <sup>2</sup> = 0.48, p < 0.0001), which can be conveniently characterized by the APA. Combining the APA with the ALA and ATA helped slightly improve the correlation (R <sup>2</sup> = 0.55, p < 0.0001), but adding the AXA did not. In osteoarthritic scapulae, a critical APA > 15 degrees was found to best identify glenoids with a critical retroversion angle > 8 degrees. The APA is more strongly associated with the glenoid retroversion angle in normal than primary osteoarthritic scapulae.
Keywords
acromion morphology, computed tomography, glenoid retroversion, osteoarthritis, wear
Pubmed
Web of science
Open Access
Yes
Create date
23/01/2022 19:56
Last modification date
19/03/2022 7:32
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