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Double-Allograft Shoulder Stabilization for Multidirectional Instability Is Associated With Improved Function and

Felix H Savoie1, Matthew W Cole1, Lacee K Collins1

  • 1Department of Orthopaedic Surgery, Tulane University School of Medicine, New Orleans, Louisiana, U.S.A.

Arthroscopy, Sports Medicine, and Rehabilitation
|July 22, 2025
PubMed
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This summary is machine-generated.

This study introduces a double-allograft technique for severe shoulder instability and hyperlaxity. The procedure demonstrated significant improvements in patient outcomes, offering a safe and effective solution for ligamentous laxity.

Area of Science:

  • Orthopedic Surgery
  • Sports Medicine
  • Shoulder Reconstruction

Background:

  • Severe, symptomatic multidirectional shoulder instability and hyperlaxity present significant management challenges.
  • Failure of conservative treatments like physical therapy necessitates advanced surgical interventions.

Purpose of the Study:

  • To describe a novel double-allograft technique for severe shoulder instability.
  • To introduce a modified Beighton score for patient selection.
  • To report long-term outcomes of this surgical approach.

Main Methods:

  • Retrospective review of 43 patients (46 shoulders) with multidirectional instability.
  • Utilized a double-allograft technique following failed physical therapy.
  • Included patients with a Tulane modified Beighton score ≥ 11 and minimum 2-year follow-up.

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Main Results:

  • Significant improvements in all patient-reported outcome measures from 6 months post-surgery (P < .001).
  • Subgroup analyses showed comparable outcomes across gender, age, and Ehlers-Danlos syndrome status.
  • Reported 15.2% complications and 10.9% revision surgeries.

Conclusions:

  • The double allograft reconstruction technique is a safe and effective option.
  • It successfully restores shoulder stability in patients with severe ligamentous laxity.
  • The modified Beighton score aids in identifying suitable candidates.