Association of glenoid morphology and anterosuperior labral variation.
OBJECTIVE
The objective of this study was to determine whether glenoid morphology correlates with anterosuperior labral variation.


METHODS
Eighty-eight direct shoulder magnetic resonance arthrograms were retrospectively reviewed. Sagittal oblique images were assessed for the presence or absence of anterosuperior glenoid concavity. Evaluation of axial images was performed, separately classifying the anterosuperior labrum into 1 of 4 categories: no variation, diminutive labrum, sublabral foramen, or Buford complex.


RESULTS
In 88 shoulders, there were 13 notched glenoids (15%). In this group, 3 (23%) had a Buford complex, 2 (15%) had a sublabral foramen, and 4 (31%) had a diminutive labrum. There were 75 ovoid glenoids (85%). In this group, 3 (4%) had a Buford complex, 8 (11%) had a sublabral foramen, and 7 (9%) had a diminutive labrum. There was a significant association (P = 0.001) between notched glenoid morphology and developmental variation of the anterosuperior labrum.


CONCLUSIONS
The presence of anterior glenoid concavity is significantly associated with overlying labral variation, which may be of use in discriminating labral pathology from developmental variation.
Shortt
Conor P
CP
Department of Radiology, Thomas Jefferson University Hospital, Philadelphia, PA 19107, USA. conorshortt@hotmail.com
Morrison
William B
WB
Shah
Suken H
SH
Zoga
Adam C
AC
Carrino
John A
JA
D000293:Adolescent; D000328:Adult; D000368:Aged; D001175:Arthrography / Q000379:methods; D002358:Cartilage, Articular / Q000002:abnormalities / Q000473:pathology; D005260:Female; D006801:Humans; D007592:Joint Diseases / Q000175:diagnosis / Q000473:pathology*; D008023:Ligaments, Articular / Q000002:abnormalities / Q000473:pathology; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012785:Shoulder Joint / Q000002:abnormalities / Q000473:pathology*; D055815:Young Adult