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Posterior Arthroscopic Anatomic Glenoid Reconstruction.

Liam Rappoldt1, Felicia Licht1, Cathy Coady1,2

  • 1Department of Orthopaedic Surgery, Nova Scotia Health, Halifax, Nova Scotia, Canada.

Arthroscopy Techniques
|June 23, 2025
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Summary

Posterior shoulder instability with bone loss can cause poor outcomes. This study presents an arthroscopic glenoid reconstruction technique using a distal tibia allograft to restore the posterior glenoid articular surface.

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Area of Science:

  • Orthopedic Surgery
  • Sports Medicine
  • Shoulder Reconstruction

Background:

  • Posterior shoulder instability can lead to significant bone loss.
  • Unlike anterior instability, the critical bone loss threshold for surgical intervention in posterior instability is not well-defined.
  • Traumatic dislocations often result in posterior instability and glenoid bone loss.

Purpose of the Study:

  • To describe an arthroscopic technique for posterior glenoid reconstruction in cases of posterior instability with bone loss.
  • To present an adaptation of the anatomic glenoid reconstruction for posterior defects.
  • To utilize a distal tibia allograft for augmenting the posterior glenoid deficit.

Main Methods:

  • Arthroscopic anatomic glenoid reconstruction.
  • Use of a distal tibia allograft for posterior bone augmentation.
  • Surgical technique focusing on visualization, graft delivery, and anatomic restoration.

Main Results:

  • The described arthroscopic technique facilitates clear surgical visualization.
  • The method allows for effective graft delivery to the posterior glenoid defect.
  • Anatomic reconstruction of the posterior glenoid articular surface is achieved.

Conclusions:

  • Arthroscopic anatomic glenoid reconstruction with a distal tibia allograft is a viable option for posterior instability with bone loss.
  • This technique offers advantages in visualization and graft placement for posterior glenoid defects.
  • It enables precise restoration of the posterior glenoid's articular surface.