Infraglenoid Muscle as an Anatomic Variation of the Anterior Rotator Cuff

Case. We report a patient with osteoarthritis of the shoulder joint who underwent reverse shoulder arthroplasty and showed anatomical variation in the subscapularis muscle (SM). A variation of the rotator cuff originating from the anteroinferior aspect of the glenoid was separated from the SM by a s...

Full description

Bibliographic Details
Main Authors: Gwan Bum Lee, Erica Kholinne, Jae-Man Kwak, Yucheng Sun, Adel Mohammaed Alhazmi, In-Ho Jeon
Format: Article
Language:English
Published: Hindawi Limited 2019-01-01
Series:Case Reports in Surgery
Online Access:http://dx.doi.org/10.1155/2019/6938252
Description
Summary:Case. We report a patient with osteoarthritis of the shoulder joint who underwent reverse shoulder arthroplasty and showed anatomical variation in the subscapularis muscle (SM). A variation of the rotator cuff originating from the anteroinferior aspect of the glenoid was separated from the SM by a septum and was named infraglenoid muscle (IGM). Conclusion. We suggest that the IGM may serve as an additional dynamic stabilizer for external rotation. Studying this particular muscular variation would lead to better understanding of the anatomical structures around the glenoid cavity.
ISSN:2090-6900
2090-6919