2021 Annual Meeting Shoulder Access Pass-Glenoid Bone Loss After First-Time Posterior Instability Events: A Prospective Cohort Study

Glenoid Bone Loss After First-Time Posterior Instability Events: A Prospective Cohort Study

Video Transcription

Video Summary

This prospective study of U.S. Military Academy cadets investigated posterior glenoid bone loss following posterior shoulder instability events. MRI comparisons before and after instability showed each event caused a 4-5% increase in bone loss, with recurrent events causing more loss than first-time incidents. Younger age (<21 years) and greater glenoid retroversion (>10 degrees) were linked to significantly increased bone loss. Baseline bone loss was higher in patients with prior instability. Most patients exhibited changes in glenoid morphology, though not statistically significant. Limitations include small sample size and MRI usage over 3DCT. Posterior instability leads to meaningful glenoid bone loss influencing treatment decisions.

Asset Caption

Dr. Michael Bedrin

Keywords

posterior glenoid bone loss

posterior shoulder instability

U.S. Military Academy cadets

glenoid retroversion

MRI bone loss assessment