Critical Shoulder Angle and Acromial Index on 3D Models

Evaluation of the Relationship Between Critical Shoulder Angle and Acromial Index Measurements With Rotator Cuff Rupture on 3D Models

Objective: The relationship between rotator cuff tears and morphological features of the shoulder joint has not been fully explained. The earlier studies are usually done with two-dimensional radiography images, but joint positions and bone formations could not be fully evaluated in two-dimensional images. This study aims to evaluate the relationship between rotator cuff tears and critical shoulder angle (CSA) and acromial index (AI) values in three dimensions.

Methods: This study examined computerized tomography of 24 rotator cuff tears (rotator cuff tear group) and 20 Bankart lesions, and no rotator cuff tears (control group). CSA and AI were measured on three-dimensional glenohumeral joint models obtained by three-dimensional reconstructions of computed tomography examinations.

The investigators anticipate results of this study will guide clinicians in revealing the etiology of rotator cuff degeneration and determining the surgical method to be used for treatment.

Study Overview

• Status: Completed
• Conditions: Rotator Cuff Injuries; Shoulder Injuries; Rotator Cuff Tears
• Intervention / Treatment: Other: Computed Tomography

• Study Type: Observational
• Enrollment (Actual): 44

Contacts and Locations

Study Locations

• Turkey
  • Çankaya
    • Ankara, Çankaya, Turkey, 06450
      • Yuksek Ihtisas University

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 17 years to 80 years (Child, Adult, Older Adult)
• Accepts Healthy Volunteers: N/A
• Genders Eligible for Study: All

• Sampling Method: Non-Probability Sample

Study Population

In this study, computed tomography examinations of patients who applied to Gazi University Faculty of Medicine Department of Orthopedics and Traumatology between 2016-2019 were examined retrospectively.

Description

Inclusion Criteria:

• A total of 44 patients, including 24 patients with proven rotator cuff tear by arthroscopic surgery (rotator cuff tear group) and 20 patients with proven Bankart lesion and no rotator cuff tear by arthroscopic surgery (control group), were included in the study.

Exclusion Criteria:

• Those with an inflammatory disease and trauma history were not included in the study.

Study Plan

How is the study designed?

Number of groups / cohorts

2

Cohorts and Interventions

Group / Cohort	Intervention / Treatment
Control group	Other: Computed Tomography; In our study, computerized tomography of 24 rotator cuff tears (rotator cuff tear group) and 20 Bankart lesions, and no rotator cuff tears (control group) were examined. CSA and AI were measured on three-dimensional glenohumeral joint models obtained by three-dimensional reconstructions of computed tomography examinations.
The rotator cuff tear group	Other: Computed Tomography; In our study, computerized tomography of 24 rotator cuff tears (rotator cuff tear group) and 20 Bankart lesions, and no rotator cuff tears (control group) were examined. CSA and AI were measured on three-dimensional glenohumeral joint models obtained by three-dimensional reconstructions of computed tomography examinations.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Critical Shoulder Angle	The critical shoulder angle is defined as the angle formed between the plane of the glenoid and the line connecting the most lateral border of the acromion process, as seen on the true anteroposterior radiograph of the shoulder.	2 hours
Acromial Index	The acromial index is the distance between the glenoid plane and the lateral border of the acromion divided by the distance between the glenoid plane and the lateral aspect of the humeral head.	2 hours

Collaborators and Investigators

• Sponsor: Merve Sevgi INCE

Publications and helpful links

General Publications

• Watanabe A, Ono Q, Nishigami T, Hirooka T, Machida H. Association between the Critical Shoulder Angle and Rotator Cuff Tears in Japan. Acta Med Okayama. 2018 Dec;72(6):547-551. doi: 10.18926/AMO/56371.

Study record dates

Study Major Dates

• Study Start (Actual): June 1, 2019
• Primary Completion (Actual): August 30, 2019
• Study Completion (Actual): September 30, 2019

Study Registration Dates

• First Submitted: February 11, 2023
• First Submitted That Met QC Criteria: February 22, 2023
• First Posted (Actual): February 24, 2023

Study Record Updates

• Last Update Posted (Actual): February 24, 2023
• Last Update Submitted That Met QC Criteria: February 22, 2023
• Last Verified: February 1, 2023

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Rupture; Tendon Injuries; Rotator Cuff Injuries; Wounds and Injuries; Shoulder Injuries
• Other Study ID Numbers: 12022023

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No