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.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Aigner F, Longato S, Fritsch H et al (2004) Anatomical considerations regarding the “bare spot” of the glenoid cavity. Surg Radiol Anat 26:308–311
Burkhart S, Debeer J, Tehrany A et al (2002) Quantifying glenoid bone loss arthroscopically in shoulder instability. Arthroscopy 18:488–491
Churchill R, Brems J, Kotschi H (2001) Glenoid size, inclination, and version: an anatomic study. J Shoulder Elbow Surg 10:327–332
De Wilde L, Berghs B, Audenaert E et al (2004) About the variability of the shape of the glenoid cavity. Surg Radiol Anat 26:54–59
Huber C (1991) The form and size of the glenoid cavity. Anat Anz 2:137–142
Huysmans P, Haen P, Kidd M et al (2006) The shape of the inferior part of the glenoid: a cadaveric study. J Shoulder Elbow Surg 15:759–763
Itoi E, Lee S, Berglund L et al (2000) The effect of a glenoid defect on anteroinferior stability of the shoulder after Bankart repair: a cadaveric study. J Bone Joint Surg Am 82:35–46
Prescher A (2000) Anatomical basics, variations, and degenerative changes of the shoulder joint and shoulder girdle. Eur J Radiol 35:88–102
Sugaya H, Moriishi J, Dohi M et al (2003) Glenoid rim morphology in recurrent anterior glenohumeral instability. J Bone Joint Surg Am 85:878–884
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Jeske, HC., Oberthaler, M., Klingensmith, M. et al. Normal glenoid rim anatomy and the reliability of shoulder instability measurements based on intrasite correlation. Surg Radiol Anat 31, 623–625 (2009). https://doi.org/10.1007/s00276-009-0492-0
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00276-009-0492-0