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Related Concept Videos

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Related Experiment Video

Updated: Dec 13, 2025

The Modified Single-working Portal Technique Using Lasso-loop Stitch with Needle for Arthroscopic Subscapularis Repair
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Glenoid version is associated with different labrum tear patterns in shoulder instability.

Julian Mehl1, Jon Hedgecock2, Alexander Otto3

  • 1Department of Orthopaedic Surgery, University of Connecticut, Farmington, CT, USA; Department of Orthopaedic Sports Medicine, Technical University, Munich, Germany.

Journal of Shoulder and Elbow Surgery
|July 28, 2020
PubMed
Summary
This summary is machine-generated.

Glenoid retroversion is linked to combined anterior-inferior-posterior labral tears. Isolated posterior tears show the most glenoid retroversion, indicating its role in shoulder instability.

Keywords:
Shoulderbone lossglenoid versioninstabilitylabral tearmorphology

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Area of Science:

  • Orthopedic Surgery
  • Radiology
  • Sports Medicine

Background:

  • Glenoid version is a known risk factor for shoulder instability.
  • The relationship between glenoid version and combined anterior-inferior-posterior labral tears remains unclear.
  • This study investigates glenoid morphology in various labral tear patterns.

Purpose of the Study:

  • To analyze glenoid morphology parameters, including version, in combined (>180°) labral tears.
  • To compare these parameters with those of isolated anterior and posterior labral tears.
  • To determine the association between glenoid version and different labral tear types.

Main Methods:

  • Retrospective review of MRI scans from shoulder instability patients.
  • Measurement of glenoid morphology: diameter, diameter ratio, version (glenoid vault method), and bone loss (best-fit circle method).
  • Comparison of parameters across three groups: isolated anterior tears, isolated posterior tears, and combined (>180°) tears.

Main Results:

  • Significant differences in glenoid version were found across all groups.
  • Isolated posterior tears exhibited the highest retroversion (19.9° ± 4.71°), followed by combined tears (14.21° ± 4.59°), and isolated anterior tears (11.24° ± 5.3°).
  • No statistically significant differences in glenoid bone loss or other measured parameters were observed between groups.

Conclusions:

  • Combined anterior-inferior-posterior labral tears are associated with greater glenoid retroversion than isolated anterior tears.
  • Isolated posterior labral tears demonstrate the most significant glenoid retroversion among all tear patterns.
  • Glenoid version is a key morphological factor in different types of shoulder labral tears.