Abstract
ObjectiveThis study aims to investigate the presence of any differences between the normal population and patients with rotator cuff tears in term of glenoid morphological parameters. MethodFor the purpose of this study, 82 shoulder MRIs were evaluated. The individuals included in this study were divided into the patient group (cuff tear group, n = 41) and the control group (control group, n = 41) with respect to the inclusion and exclusion criteria. For the statistical analysis, SPSS software was used. ResultsStatistically significant difference was found between the patient group and the control group in terms of Glenoid Version Angle (GVA), Glenoid Axial Width (GAW), Glenoid Axial Depth (GAD), Glenoid Coronal Depth (GCD), and the Glenoid Inclination Angle (GIA). Age was found to have a positive linear correlation with the glenoid coronal height. Moreover, statistically significant difference was found between the males and females, between males with cuff tears and control males, and females with cuff tears and control females in terms of glenoid parameters. When gender was a covariate, statistically significant differences in glenoid parameters was still present between cuff tears patients and individuals with control shoulders. ConclusionThe results attained in this study are suggest that the GVA, GAW, GAD, GCD, and GIA in rotator cuff tear patients are different than those found in control patients. These measurements may be helpful in reaching the diagnosis in cases where the clinical diagnosis is equivocal. Moreover, these measurements may be helpful in planning tears management. The influence of gender on glenoid parameters and subsequent impact on shoulder pathology may help to better understand the biomechanism of rotator cuff tears and reach an individualized management for better patient care.
Highlights
The glenohumeral joint is a highly mobile joint with increased range of motion, which explains its anatomical predisposition for instability
We investigate whether there is any correlation between glenoid morphological parameters and rotator cuff tears among the Lebanese population
The results obtained from the current study suggest that the glenoid version angle, glenoid axial width, glenoid coronal depth, glenoid axial depth, and the glenoid inclination angle in patients with rotator cuff tears are different from those in the control group
Summary
The glenohumeral joint is a highly mobile joint with increased range of motion, which explains its anatomical predisposition for instability. The rotator cuff creates a pivot point upon which the deltoid muscle can act for further elevation of the arm. The rotator cuff muscles maintain the depression of the humeral head into the shallow glenoid fossa during movement of. Neer’s hypothesis of rotator cuff tearing secondary to impingement was further fortified with Bigliani’s description of the acromial morphological influence on cuff tears. Bigliani et al classified a flat acromion into type I, a curved acromion into type II, and a hooked acromion into type III. Later other authors, found a correlation between type III acromion (hooked morphology) and increased risk for rotator cuff tearing [3,11]
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