Are critical shoulder angle and acromion index correlated to the size of a rotator cuff tear

2021 ◽  
pp. 103122
Author(s):  
Onur Tunali ◽  
Ali Erşen ◽  
Taha Kızılkurt ◽  
Serkan Bayram ◽  
Sevan Sıvacıoğlu ◽  
...  
Keyword(s):  
Rotator Cuff ◽  
Rotator Cuff Tear ◽  
Critical Shoulder Angle ◽  
Cuff Tear ◽  
Acromion Index ◽  
Shoulder Angle

Rotator cuff tear incidence association with critical shoulder angle and subacromial osteophytes

2019 ◽  
Vol 28 (3) ◽  
pp. 470-475 ◽  
Author(s):  
Jung-Han Kim ◽  
Young-Kyoung Min ◽  
Heui-Chul Gwak ◽  
Chang-Wan Kim ◽  
Chang-Rack Lee ◽  
...  
Keyword(s):  
Rotator Cuff ◽  
Rotator Cuff Tear ◽  
Critical Shoulder Angle ◽  
Cuff Tear ◽  
Shoulder Angle

scholarly journals Acromioplasty reduces critical shoulder angle in patients with rotator cuff tear

PLoS ONE ◽  
2021 ◽  
Vol 16 (6) ◽  
pp. e0253282
Author(s):  
Che-Li Lin ◽  
Li-Fong Lin ◽  
Tzu-Herng Hsu ◽  
Lien-Chieh Lin ◽  
Chueh-Ho Lin ◽  
...  
Keyword(s):  
Rotator Cuff ◽  
Rotator Cuff Tear ◽  
Limited Information ◽  
Lateral Border ◽  
Critical Shoulder Angle ◽  
Cuff Tear ◽  
Paired Samples ◽  
Arthroscopic Rotator Cuff ◽  
Cuff Repair ◽  
Shoulder Angle

Critical shoulder angle (CSA) is the angle between the superior and inferior bone margins of the glenoid and the most lateral border of the acromion and is potentially affected during a rotator cuff tear (RCT). Acromioplasty is generally performed to rectify the anatomy of the acromion during RCT repair surgery. However, limited information is available regarding the changes in the CSA after anterolateral acromioplasty. We hypothesized that CSA can be decreased after anterolateral acromioplasty. Data were retrospectively collected from 712 patients with RCTs and underwent arthroscopic rotator cuff repair between January 2012 and December 2018, of which 337 patients were included in the study. The presurgical and postsurgical CSA were then determined and compared using a paired samples t test. Because previous study mentioned CSA more than 38 degrees were at risk of rotator cuff re-tear, patients were segregated into two groups: CSA < 38° and CSA ≥ 38°; these groups were compared using an independent-samples t test. These 337 participants (160 male and 177 female) presented a CSA of 38.4° ± 6.0° before anterolateral acromioplasty, which significantly decreased to 35.8° ± 5.9° after surgery (P < .05). Before surgery, 172 patients were present in the CSA ≥ 38° group and 57 were preset in the CSA < 38° group after surgery. The CSA decreased significantly in the CSA ≥ 38° group rather than in the CSA < 38° group (P < .05). In conclusion, the CSA can be effectively decreased through anterolateral acromioplasty, and this reduction in the CSA is more significant among individuals with CSA ≥ 38° than among those with CSA < 38°, indicating that acromioplasty is recommended along with RCT repair especially among individuals with a wide presurgical CSA.

scholarly journals Does the Critical Shoulder Angle Correlate With Rotator Cuff Tear Progression?

2017 ◽  
Vol 475 (6) ◽  
pp. 1608-1617 ◽  
Author(s):  
Peter N. Chalmers ◽  
Dane Salazar ◽  
Karen Steger-May ◽  
Aaron M. Chamberlain ◽  
Ken Yamaguchi ◽  
...  
Keyword(s):  
Rotator Cuff ◽  
Rotator Cuff Tear ◽  
Critical Shoulder Angle ◽  
Cuff Tear ◽  
Shoulder Angle

Radiographic shoulder parameters and their relationship to outcomes following rotator cuff repair: a systematic review

2020 ◽  
pp. 175857321989598
Author(s):  
Musa B Zaid ◽  
Nathan M Young ◽  
Valentina Pedoia ◽  
Brian T Feeley ◽  
C Benjamin Ma ◽  
...  
Keyword(s):  
Systematic Review ◽  
Rotator Cuff ◽  
Rotator Cuff Repair ◽  
Patient Reported Outcomes ◽  
Critical Shoulder Angle ◽  
Patient Reported ◽  
Acromion Index ◽  
Bony Morphology ◽  
Cuff Repair ◽  
Shoulder Angle

Background Anatomic parameters, such as the critical shoulder angle and acromion index, have emerged as methods to quantify scapular anatomy and may contribute to rotator cuff pathology. The purpose of this paper is to investigate the published literature on influences of scapular morphology on the development of re-tears and patient-reported outcomes following rotator cuff repair. Methods A systematic review of the Embase and PubMed databases was performed to identify published studies on the potential influence of scapular bony morphology and re-tear rates and patient-reported outcomes after rotator cuff repair. Studies were reviewed by two authors. Results A total of 615 unique titles and 49 potentially relevant abstracts were reviewed, with eight published manuscripts identified for inclusion. Two of three papers reported no relationship between these acromion index and rotator cuff re-tear rate, while one paper found an increased re-tear rate. All three studies on critical shoulder angle found a significant association between critical shoulder angle and cuff re-tear rate. There was no clear relationship between any bony morphologic measurement and patient-reported outcomes after rotator cuff repair. Conclusions Rotator cuff re-tear rate appears to be significantly associated with the critical shoulder angle and glenoid inclination, while not clearly associated with acromial morphologic measurements.

scholarly journals Neither critical shoulder angle nor acromion index were related with specific pathology 20 years later!

2021 ◽  
Author(s):  
Hanna C. Björnsson Hallgren ◽  
Lars Adolfsson
Keyword(s):  
Rotator Cuff ◽  
Elective Surgery ◽  
Rotator Cuff Tears ◽  
Level Of Evidence ◽  
Critical Shoulder Angle ◽  
Glenohumeral Osteoarthritis ◽  
The Difference ◽  
Acromion Index ◽  
Shoulder Angle

Abstract Purpose The critical shoulder angle (CSA) and the acromion index (AI) are measurements of acromial shape reported as predictors of degenerative rotator cuff tears (RCT) and glenohumeral osteoarthritis (GH OA). Whether they are the cause or effect of shoulder pathologies is uncertain since pre-morbid radiographs most often are lacking. The main aim of this study was to investigate if CSA or AI were related to the development of RCT or GH OA after 20 years. A secondary aim was to investigate if the CSA and AI had changed over time. Methods In the hospital archive, 273 preoperative plain shoulder radiographs were found of patients scheduled for elective surgery other than cuff repair and arthroplasty. Forty-five images fulfilled the strict criteria published by Suter and Henninger (2015) and were used to measure CSA and AI with two independent assessors. No patient had any sign of OA in the index radiographs or any information in the medical records indicating RCT. After a median of 20 (16–22) years, 30 of these patients were radiologically re-examined with bilateral true frontal views and ultrasound of the rotator cuff. There were 19 men (20 study shoulders) and 11 females (12 study shoulders). Results Mean age at follow-up was 56 (32–78) years. There was no correlation between CSA (r = 0.02) (n.s) or AI (r = − 0.13) (n.s) in the primary radiographs and OA at follow-up. Nor was any correlation found between index CSA (r = 0.12) (n.s) or AI (r = − 0.13) (n.s) and RCT at follow-up. Mean difference in CSA was − 1.7 (− 10–3) degrees and mean AI difference was − 0.04 (− 0.13–0.09) between the first and the second radiographs, 20 years later. Bilaterally, mean CSA was 32 and AI 0.61 at follow-up. Conclusion In this study, no correlation between the CSA, AI and development of OA or RCT could be found. The mean CSA and AI decreased over a 20-year period but the difference was very small. No difference was found between the study shoulders and the contralaterals. These findings question previously reported etiological associations between scapular anatomy and the development of OA or RCT and thereby the use of these calculations as the basis of treatment. Level of evidence III.

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