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Updated: May 9, 2025

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Arthroscopic Posterior Labral Repair for Posterior Shoulder Instability.

Michael A Nammour1, Michael James1, Justin W Arner1

  • 1University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.

Video Journal of Sports Medicine
|May 1, 2025
PubMed
Summary

Posterior shoulder instability, often from repetitive microtrauma, can be reliably treated with arthroscopic posterior labral repair. This surgical technique effectively restores stability and function, with high return-to-sport rates and low failure.

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Area of Science:

  • Orthopedic Surgery
  • Sports Medicine
  • Arthroscopic Techniques

Background:

  • Posterior shoulder instability affects 2-10% of cases, typically from repetitive microtrauma causing posterior capsulolabral complex tears.
  • Unlike anterior instability's traumatic onset, posterior instability often involves gradual attenuation or tearing of the posterior stabilizers.

Purpose of the Study:

  • To describe the arthroscopic technique for posterior labral repair.
  • To evaluate the outcomes of surgical management for posterior shoulder instability.

Main Methods:

  • Arthroscopic glenoid preparation using specialized instruments.
  • Placement of all-suture and knotless suture anchors for labral repair.
  • Posterior capsular closure to prevent stress risers.
Keywords:
arthroscopyposterior instabilityshouldersports medicinesurgical technique

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Main Results:

  • Significant improvements in American Shoulder and Elbow Surgeons (ASES) scores, stability, pain, and function were observed.
  • Ninety percent of patients returned to sport, with 64% returning to their previous level.
  • The study reported a low failure rate of 6% at 36 months post-surgery.

Conclusions:

  • Arthroscopic posterior labral repair is a technically demanding yet reliable procedure for managing posterior shoulder instability.
  • The technique offers favorable outcomes, including high patient satisfaction and return to activity levels.