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Surg Radiol Anat. 2009 Oct;31(8):623-5. doi: 10.1007/s00276-009-0492-0. Epub 2009 Mar 28.

Normal glenoid rim anatomy and the reliability of shoulder instability measurements based on intrasite correlation.

Author information

1
Department of Traumatology and Sports Medicine, Innsbruck Medical University, Anichstrasse 35, 6020, Innsbruck, Austria. hans.jeske@i-med.ac.at

Abstract

PURPOSE:

To evaluate the glenoid shape and to evaluate if the contralateral glenoid can be used as size reference.

METHODS:

Two independent investigators prospectively analysed shoulder computer-tomographies of 90 patients. The glenoids were positioned in a true "en face" view and evaluated for size and shape. The intraindividual correlation of these parameters between left and right side were assessed.

RESULTS:

In the 90 computer tomographically evaluated shoulder pairs a significant intraindividual correlation of size and shape was seen (P < 0.001). The intraindividual difference in glenoid surface area averaged 1.8% of the total glenoid surface. The shape of the inferior hemisphere correlated 100%. We found all the inferior glenoids to be circular.

CONCLUSION:

Our study clearly shows that the inferior glenoid in healthy individuals has the shape of a circle. The high side-to-side correlation of the glenoid surface area can be applied when measuring bony defects by evaluation of the contralateral side.

PMID:
19330278
DOI:
10.1007/s00276-009-0492-0
[Indexed for MEDLINE]

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