Analysis of glenohumeral morphological factors for anterior shoulder instability and rotator cuff tear by magnetic resonance imaging

Saygı, Baransel; Karahan, Nazım; Karakuş, Özgün; Demir, Arzu; Ozkan, Olcay; Soylu-Boy, F. N.

doi:10.1177/2309499018768100

Cited by 10 publications

(9 citation statements)

References 17 publications

(18 reference statements)

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“…According to an MRI study, the humeral head is larger in both the transverse and longitudinal axes in the AnI group, but smaller both transversely and longitudinally in the rotator cuff group 8 and is consistent with a CT study that showed that the humerus is larger in both the vertical and horizontal planes in the AnI group. 11 We believe that AI was smaller in the AnI group because the humeral head was larger, and AI was larger in the RCT group because the humeral head was smaller than that in the control group.…”

Section: Discussionsupporting

confidence: 84%

“…Anterior Shoulder Instability (AnI) and RCT are related to changes in the glenohumeral morphology, such as Glenoid Version (GV), GI, and humeral head diameter. 7 , 8 GI is a part of CSA and AI, and the humeral head diameter is a part of AI. As studies have shown, GI and GV in patients with RCT or AnI are different from those in normal population 9 , 10 and the humeral head is smaller in RCTs and larger in AnI.…”

Section: Introductionmentioning

confidence: 99%

“…As studies have shown, GI and GV in patients with RCT or AnI are different from those in normal population 9 , 10 and the humeral head is smaller in RCTs and larger in AnI. 8 , 11 These results may suggest that CSA and AI can also be different between patients with RCT and those with AnI. Thus, the roles of CSA, AI, GI, and GV are not fully evaluated in patients with AnI.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of critical shoulder angle and acromion index in patients with anterior shoulder instability and rotator cuff tear

Karahan

Yılmaz

Öztermeli³

et al. 2021

AOTT

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Objective The aim of this study was to evaluate glenohumeral morphologic differences and their correlation between glenohumeral instability and rotator cuff pathology. Methods Two-hundred radiographs and 100 MRI scans of 100 patients in whom the diagnosis of Anterior Shoulder Instability (Anl) or Rotator Cuff Tear (RCT) was arthroscopically verified were retrospectively identified and included in the study. All the patients were categorized into two groups: 50 patients with Anl (23 female, 28 male; mean age = 29 ± 7.4) and 50 patients with RCT (28 female, 22 male). Two separate control groups were then formed, one of which included contralateral shoulders of patients in the AnI group, and the other consisted of contralateral shoulders of patients in the RCT group. The x-ray and MRI scans were examined by an orthopedic surgeon and a radiologist. The Acromial Index (AI) and the Critical Shoulder Angle (CSA) were measured on true anteroposterior shoulder radiographs; Glenoid Inclination (GI), Glenoid Version (GV), and Acromion Angulation (AA) were measured on MRI. Results In the AnI group, the measurements were as followed: AI, 0.66 ± 0.03; CSA, 33 ° ± 2.85; GI, 3.4° ± 6.2; GV, 4.1 ± 4.3; and AA, 12.9 ± 8.3. In the RCT group, AI 0.71 ± 0.04; CSA, 36° ± 2.69; GI, 9.1 ± 5; GV, 6.7 ° ± 5.7; and AA, 14.3° ± 8.7. A moderate correlation was found between CSA and GI ( r = 0.41, P = 0.001) and between AI and GI ( r = 0.42, P = 0.014). A weak correlation was found between AI and GI in the AnI group ( r = 0.22, P = 0.001). The inter- and intra-observer intraclass correlation coefficients were respectively 0.81 and 0.84 for AI, 0.88 and 0.92 for CSA, 0.72 and 0.76 for GI, 0.69 and 0.73 for GV, and 0.72 and 0.77 for AA. Conclusion The results of this study have shown that lower AI, GI, and antevert GV may be associated with AnI. Investigating CSA, AI, and GV could be useful for diagnostic evaluation of patients with AnI. Level of Evidence Level III, Diagnostic Study

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Section: Discussionsupporting

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Evaluation of critical shoulder angle and acromion index in patients with anterior shoulder instability and rotator cuff tear

Karahan

Yılmaz

Öztermeli³

et al. 2021

AOTT

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“…Humerus retroversiyonu glenohumeral eklem mekaniğini etkiler. Omuz ekleminin mobilite ve stabilitesi retroversiyon miktarına bağlıdır (10)(11)(12)(13)(14) . Bu çalışmanın amacı, diafiz kırığı sonrası iyileşmiş humerus ile aynı bireyin karşı taraf sağlam humerus versiyon açılarının BT ile değerlendirilmesi ve versiyondaki değişimin fonksiyonel sonuçlara olan etkisinin incelenme-sidir.…”

Section: Discussionunclassified

Does the change of retroversion angle effect the clinical results of conservative treatment of humerus diaphyseal fractures?

Doğan¹,

Caliskan²,

Gencer³

et al. 2019

TERH

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Objective: Retroversion changes, that can be seen after humeral diaphyseal fractures, can play a role on functional results by affecting the mobility and stability of shoulder joint. The aim of this study is to evaluate the retroversion angles of healed humerus by using computed tomography and to examine the effects of retroversion on functional results. Methods: Fifty-two humeral diaphyseal fractures were evaluated retrospectively. Retroversion angles of fractured humerus and contralateral humerus of all patients were measured by computed tomography. Constant Shoulder Scoring (COS) system was used to evaluate functional results. Mann Whitney-U test, Spearman and Pearson Correlation tests were used for statistical analysis. Results: Of the 28 patients included in the study, 14 (50%) were female and 14 (50%) were male. The mean followup period was 23.6 months (range 22-26), with a mean age of 45.14 (range 15-80) years. In 15 patients, the retroversion angle was increased (median 21.46 degrees), and in 13 patients the retroversion angle was decreased (antevert) (median 16.34 degrees). Changes in retroversion angles were not found to be statistically significant (p=0.828). COS values were found to be lower in patients with deeper changes in retroversion angles (p=0.433). Conclusion: Wide retroversion intervals can be obtained in humerus diaphyseal fractures by conservative treatment. This has little effect on clinical functional outcomes.

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“…The aforementioned parameters were chosen because they are either considered risk factors for RCT development or used by orthopedic surgeons for surgical planning. 4,6,8,11,18,23,25,27,30,35,39,40,44 In addition, 5 MRI parameters were included in the model for the same reasons:…”

Section: Regression Modelmentioning

confidence: 99%

Morphologic and radiologic parameters correlating to shoulder function at diagnosis for patients with rotator cuff tear

Cauchon

Tétreault

Bascans

et al. 2020

Journal of Shoulder and Elbow Surgery

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Background: The magnetic resonance imaging (MRI) parameters used to diagnose rotator cuff tears are weakly correlated to shoulder function. Our hypothesis was that adding 3-dimensional morphologic parameters resulting from biplanar radiographs (3DXR parameters) to the MRI parameters would improve this correlation. Methods: We assessed 52 patients with rotator cuff tears with an EOS Imaging radiographic examination, MRI study, and clinical evaluation of the shoulder, as well as the Constant score. The bones of the 52 shoulders were reconstructed 3-dimensionally, and eleven 3DXR parameters were automatically extracted. First, the trueness and reliability of these parameters were evaluated. Then, bivariate correlations between each parameter and the Constant score were made. A linear regression model was subsequently built to correlate the 11 parameters and 5 MRI findings with shoulder function at diagnosis, as assessed by the Constant score. Results: The parameters showed good trueness and reliability of most 3DXR parameters. Supraspinatus tear extension, muscle atrophy, and the distance between the greater and deltoid tuberosities were the only parameters with a statistically significant correlation to a lower Constant score (P < .05) in the bivariate study. These correlations were either weak or negligible. A regression model was successfully built with one MRI parameter and four 3DXR parameters. Correlation to function increased from 16.7% to 43.3% with this model. Conclusion: For patients with rotator cuff tears, the combination of MRI and 3DXR parameters of the shoulder in a linear regression model improves the correlation with the Constant score (shoulder function) at diagnosis.

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Analysis of glenohumeral morphological factors for anterior shoulder instability and rotator cuff tear by magnetic resonance imaging

Cited by 10 publications

References 17 publications

Evaluation of critical shoulder angle and acromion index in patients with anterior shoulder instability and rotator cuff tear

Evaluation of critical shoulder angle and acromion index in patients with anterior shoulder instability and rotator cuff tear

Does the change of retroversion angle effect the clinical results of conservative treatment of humerus diaphyseal fractures?

Morphologic and radiologic parameters correlating to shoulder function at diagnosis for patients with rotator cuff tear

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