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Posterior bone block procedure for posterior shoulder instability.

Elvire Servien1, Gilles Walch, Zenia E Cortes

  • 1Department of Orthopaedic Surgery, Centre Albert Trillat, 8 rue de Margnolles, 69300, Lyon-Caluire, France. elvire.servien@chu-lyon.fr

Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA
|March 21, 2007
PubMed
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The posterior bone block procedure effectively treats posterior shoulder instability, with most patients achieving good or excellent outcomes and returning to sports. This surgical option demonstrates a low risk of recurrent dislocation.

Area of Science:

  • Orthopedic Surgery
  • Sports Medicine
  • Shoulder Instability Research

Background:

  • Posterior shoulder instability is a challenging condition.
  • The posterior bone block procedure is an infrequently utilized surgical technique for its management.
  • Understanding the outcomes of this procedure is crucial for treatment planning.

Purpose of the Study:

  • To evaluate the efficacy and outcomes of the posterior bone block procedure for treating posterior shoulder instability.
  • To assess patient-reported outcomes, functional scores, and radiographic findings after surgery.
  • To determine the complication rates, including recurrent instability and arthritis.

Main Methods:

  • Retrospective review of 21 shoulders treated with posterior bone block for recurrent posterior shoulder instability (1984-2001).

Related Experiment Videos

  • Patient data included demographics, injury history (dislocation/subluxation), and preoperative imaging (CT scans for glenoid retroversion).
  • Outcomes were assessed using the Constant score, Duplay score, subjective patient satisfaction, and radiographic evaluation at an average 6-year follow-up.
  • Main Results:

    • All patients reported good or excellent subjective outcomes.
    • High mean functional scores were observed: Constant score (93.3) and Duplay score (85.6).
    • Fifteen patients returned to their pre-injury sports level; three were considered clinical failures due to recurrent dislocation or apprehension. Two shoulders developed glenohumeral arthritis.

    Conclusions:

    • The posterior bone block procedure is a viable and effective treatment for posterior shoulder instability, particularly posterior dislocations.
    • The procedure is associated with high patient satisfaction and return to sport rates.
    • The risk of recurrent dislocation following a posterior bone block is low.