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Another Glenoid Measurements for Shoulder Surgery
Clinics in Shoulder and Elbow 2018;21:179-185
Published online December 1, 2018
© 2018 Korean Shoulder and Elbow Society.

Yeon-Seok Jeong, Jae-Kwang Yum, Jun-Seok Lee

Department of Orthopaedic Surgery, Sanggye Paik Hospital, Inje University School of Medicine, Seoul, Korea
Correspondence to: Jae-Kwang Yum
Department of Orthopaedic Surgery, Inje University Sanggye Paik Hospital, 1342 Dongil-ro, Nowon-gu, Seoul 01757, Korea
Tel: +82-2-950-1027, Fax: +82-2-950-1429, E-mail: Yumccf@hanmail.net, ORCID: https://orcid.org/0000-0002-0286-7981
IRB approval: Inje University Sanggye Paik Hospital (SGPAIK 2018-06-012).
Received June 1, 2018; Revised July 27, 2018; Accepted July 30, 2018.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
 Abstract
Background: We analyzed the angle between the glenoid anterior surface and glenoid axis, the range of the glenoid apex and the location of the glenoid apex for assistance during shoulder surgery.
Methods: Sixty-two patients underwent a computed tomography of the shoulder with a proximal humerus fracture. In the range of the glenoid apex, the ratios of the distribution of triangles with a Constant anterior and posterior area of the glenoid were measured. The location of glenoid apex was confirmed as the percentage of the position with respect to the upper part of the glenoid with the center of the part, analyzed the angle between the glenoid anterior surface and glenoid axis was measured.
Results: The angle between the glenoid anterior surface and glenoid axis was 19.80째 짹 3.88째. The location of the glenoid apex is 60.36% 짹 9.31%, with the upper end of the glenoid as the reference. The range of the glenoid apex was 21.16% 짹 4.98%. When the height of the glenoid becomes smaller, the range of the glenoid apex tends to become larger (p=0.001) and the range of the glenoid apex becomes wider (p=0.001) as the glenoid width narrows. 
Conclusions: We believe the anatomical measurements of the glenoid will be helpful for a more accurate insertion in glenoid component. It is thought that more accurate insertion is possible if we can set other anatomical measurements using computed tomography imaging of the glenoid which can develop into the study of other anatomical measurements.
Keywords : Anatomical analysis; Computed tomography; Glenoid apex; Glenoid axis; Glenoid angles