The Acromiohumeral Center-Edge Angle and Risk of Rotator Cuff Tear: A Plain Radiograph and MRI Study

Abstract

Introduction:

The acromiohumeral center-edge angle (ACEA) is a parameter that can be measured on plain shoulder radiographs and has been found to be associated with increased risk of sustaining a rotator cuff tear.

Purpose:

The aim of this study was to investigate this association using plain radiographs and to explore its applicability on shoulder magnetic resonance imaging (MRI) in the same patients.

Methods:

This retrospective study compared 45 patients who underwent rotator cuff repair between September 2021 and April 2022 and 41 patients with normal shoulders. The ACEA was measured by 2 independent observers on anteroposterior radiographs and shoulder MRI. The collected data were analyzed and P values of <.05 were considered statistically significant.

Results:

The ACEA was found to be higher in patients with rotator cuff tears (23.48° ± 7.11°) when compared with the control group (15.54° ± 4.4°). On shoulder MRI assessment, a higher ACEA was also seen in the rotator cuff tear group (18.93° ± 6.7°) than in the control group (13.79° ± 4.9°). The ACEA measurement on MRI showed strong intrarater reliability (0.965), but weak interrater reliability (0.251).

Conclusion:

This retrospective study found an association between increased ACEA and risk of rotator cuff tear when measured on plain radiographs. In addition, we found an association between increased ACEA measurement on shoulder MRI and rotator cuff tears, thus suggesting the applicability of ACEA measurement on shoulder MRI.

Keywords

rotator cuff acromiohumeral center-edge angle radiographs MRI

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References

Alqahtani

Albadran

Alsinan

, et al. The critical shoulder angle in a Middle Eastern cohort: is there an association with rotator cuff tear? Musc Ligam Tend J (MLTJ). 2022;12(3):286–289. https://doi.org/10.32098/mltj.03.2022.04

Balke

Schmidt

Dedy

, et al. Correlation of acromial morphology with impingement syndrome and rotator cuff tears. Acta Orthop. 2013;84(2):178–183.

Collin

Matsumura

Lädermann

Denard

Walch

. Relationship between massive chronic rotator cuff tear pattern and loss of active shoulder range of motion. J Shoulder Elbow Surg. 2014;23(8):1195–1202.

Hussain

Muzzammil

Butt

Valsamis

Dwyer

. Effectiveness of plain shoulder radiograph in detecting degenerate rotator cuff tears. J Ayub Med Coll Abbottabad. 2018;30(1):8–11.

Jeanfavre

Husted

Leff

. Exercise therapy in the non-operative treatment of full-thickness rotator cuff tears: a systematic review. Int J Sports Phys Ther. 2018;13(3):335–378.

Kim

Ryu

Hong

Kim

. Can a high acromion index predict rotator cuff tears? Int Orthop. 2012;36(5):1019–1024.

Nazarian

Jacobson

Benson

, et al. Imaging algorithms for evaluating suspected rotator cuff disease: Society of Radiologists in Ultrasound consensus conference statement. Radiology. 2013;267(2):589–595.

Pandey

Vijayan

Tapashetti

, et al. Does scapular morphology affect the integrity of the rotator cuff? J Shoulder Elbow Surg. 2016;25(3):413–421.

Pandey

Jaap Willems

. Rotator cuff tear: a detailed update. Asia Pac J Sports Med Arthrosc Rehabil Technol. 2015;2(1):1–14.

10.

Singleton

Agius

Andrews

. The acromiohumeral centre edge angle: a new radiographic measurement and its association with rotator cuff pathology. J Orthop Surg (Hong Kong). 2017;25(3):727950.

11.

Vijittrakarnrung

Fuangfa

Jaovisidha

Kijkunasathian

. Correlation between full-thickness degenerative supraspinatus tear and radiographic parameters including the acromiohumeral centre edge angle and the greater tuberosity angle. BMC Musculoskelet Disord. 2021;22(1):607.

12.

Zaid

Young

Pedoia

Feeley

Lansdown

. Radiographic shoulder parameters and their relationship to outcomes following rotator cuff repair: a systematic review. Shoulder Elbow. 2021;13(4):371–379.

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