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Arthroscopic Posterior Glenoid Augmentation With a Fresh Distal Tibia Allograft
Mikalyn T DeFoor1, Emily A Whicker2,3, Marco Adriani2,4
1San Antonio Military Medical Center, Fort Sam Houston, Texas, U.S.A.
Arthroscopy Techniques
|July 14, 2025
Summary
Recurrent posterior shoulder instability due to glenoid bone loss can be treated with an arthroscopic fresh distal tibia allograft. This technique restores bone stock, offering an anatomic contour and articular surface for improved shoulder function.
Area of Science:
- Orthopedic Surgery
- Sports Medicine
- Shoulder Reconstruction
Background:
- Recurrent posterior instability can lead to posterior glenoid bone loss, a common cause of arthroscopic posterior stabilization failure.
- Significant glenoid bone loss (typically >20%) necessitates bone restoration for successful repair.
Purpose of the Study:
- To outline an arthroscopic technique using a fresh distal tibia osteochondral allograft.
- To address recurrent posterior shoulder instability in patients with glenoid bone loss.
Main Methods:
- Arthroscopic posterior capsulolabral repair with a fresh distal tibia osteochondral allograft.
- Utilizing the allograft to restore posterior glenoid bone stock and address instability.
Main Results:
- The fresh distal tibia allograft provides an anatomically contoured graft with a matching articular surface.
- This approach avoids donor site morbidity associated with autografts.
Conclusions:
- Arthroscopic fresh distal tibia allograft is a viable option for managing recurrent posterior shoulder instability with significant glenoid bone loss.
- This technique effectively restores glenoid bone stock and addresses instability after failed primary repair.
