Correction of Static Posterior Shoulder Subluxation by Restoring Normal Scapular Anatomy Using Acromion and Glenoid Osteotomies: A Case Report

Christian Gerber; Bastian Sigrist; Bettina Hochreiter

doi:10.2106/JBJS.CC.23.00060

Correction of Static Posterior Shoulder Subluxation by Restoring Normal Scapular Anatomy Using Acromion and Glenoid Osteotomies: A Case Report

JBJS Case Connect. 2023 May 12;13(2):e23.00060. doi: 10.2106/JBJS.CC.23.00060. eCollection 2023 Apr 1.

Authors

Christian Gerber^{1

2}, Bastian Sigrist³, Bettina Hochreiter^{1

2}

Affiliations

¹ Department of Orthopaedics University of Zürich, Balgrist University Hospital, Zürich, Switzerland.
² Balgrist Campus, Orthopaedic Research Center, Zürich, Switzerland.
³ Department of Orthopaedics, Laboratory for Research in Orthopaedic Computer Science (ROCS), University of Zurich, Balgrist Campus, Zurich, Switzerland.

PMID: 37172119
DOI: 10.2106/JBJS.CC.23.00060

Abstract

Case: A 40-year-old man presented with progressive shoulder pain, associated with static posterior subluxation and mild eccentric glenohumeral osteoarthritis. Compared with a mean statistical shape model of a normal shoulder, the patient's acromion was abnormally high and horizontal, and the glenoid abnormally inclined inferiorly and minimally retroverted. Restoration of normal scapular anatomy using 3-dimensional planned acromial and glenoid osteotomies led to recentering of the joint and full shoulder function up to 24 months postoperatively.

Conclusion: The correction of associated acromial and glenoid malformation can revert early static posterior subluxation of the shoulder. Whether successful recentering prevents progression of osteoarthritis remains to be established.