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

In this video, the speaker discusses the role of posterior glenoid bone loss in the management of posterior shoulder instability. A study found that posterior glenoid bone loss greater than 13.5% was associated with a reoperation rate of 44% for repair. The study aimed to define glenoid bone loss in patients with and without a history of instability. This was a prospective cohort study involving 13 shoulders in 11 patients. Measurements of glenoid bone loss were performed using MRI scans. The results showed that each instability event was associated with a 4-5% increase in bone loss. Recurrent instability events resulted in greater bone loss. Age and glenoid retroversion were also factors contributing to bone loss. The study is limited by its small sample size and use of MRI instead of 3DCT for measurements. The conclusions suggest that posterior instability events lead to posterior glenoid bone loss, with recurrent instability events having a greater impact. Retroversion and age also play a role in the amount of bone loss. Credit for the information goes to the person speaking in the video.

Asset Caption

Dr. Michael Bedrin

Keywords

posterior glenoid bone loss

shoulder instability

reoperation rate

glenoid bone loss

MRI scans