Related Experiment Video
Updated: Jun 21, 2026
10:10
Reverse Total Shoulder Arthroplasty
Published on: July 5, 2011
Quantifying glenoid bone loss arthroscopically in shoulder instability
Stephen S Burkhart1, Joe F Debeer, Armin M Tehrany
1Baylor College of Medicine, The San Antonio Orthopaedic Group, San Antonio, Texas, USA.
Summary
The glenoid bare spot offers a reliable arthroscopic method to measure inferior glenoid bone loss. This technique aids surgeons in determining the need for bone grafting to restore shoulder stability.
Area of Science:
- Orthopedic Surgery
- Anatomy
- Medical Imaging
Background:
- Glenoid bone loss is a significant factor in shoulder instability.
- Accurate quantification of bone loss is crucial for effective treatment planning.
- Current arthroscopic methods for measuring glenoid bone loss can be inconsistent.
Purpose of the Study:
- To establish a consistent arthroscopic methodology for quantifying glenoid bone loss.
- To identify a reliable anatomical landmark for measuring bone loss.
- To provide an objective tool for surgical decision-making.
Main Methods:
- Anatomic investigation of glenoid structure and landmarks using arthroscopy.
- Measurement of the glenoid bare spot location in 56 live subjects (average age 40).
- Direct measurement of the glenoid bare spot in 10 fresh-frozen cadaver shoulders (average age 76).
Main Results:
- The glenoid bare spot was consistently located near the center of the inferior glenoid articular margin circle.
- Tightly clustered standard deviations confirmed the reliable location of the bare spot in both live subjects and cadavers.
- This landmark provides a stable reference point for quantifying bone loss.
Conclusions:
- The glenoid bare spot serves as a central reference point for quantifying inferior glenoid bone loss.
- Objective measurement of bone loss using the bare spot is clinically valuable.
- This method assists surgeons in deciding on bone grafting for shoulder stability.
