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Joseph W Galvin1, Josef K Eichinger1, Robert E Boykin2, Gregor Szöllösy3, Laurent Lafosse3
1 Orthopaedic Surgery Service, Department of Surgery, Madigan Army Medical Center, Tacoma, WA, USA
2 Blue Ridge Bone and Joint Clinic, Asheville, NC, France
3 Clinique Générale, Alps Surgery Institute, Annecy, France
Correspondence Address:
Josef K Eichinger
9040 Fitzsimmons Drive, Tacoma, WA 98431
USA
 Source of Support: None, Conflict of Interest: None
DOI: 10.4103/0973-6042.167955
We report a case of posterior shoulder instability following anatomic total shoulder arthroplasty (TSA). In addition, we present guidelines to aid in the management of posterior instability after TSA. A 50-year-old male underwent anatomic TSA for glenohumeral osteoarthritis. Postoperatively, the patient developed posterior instability secondary to glenoid retroversion. He did not improve despite conservative treatment. He underwent an arthroscopic posterior bone block procedure, 4-month after his index arthroplasty. At 14-month follow-up, the patient had regained near full motion and strength, and radiographs demonstrated osseous integration with no evidence of component loosening. Posterior instability following TSA is a relatively rare complication and challenging to manage. The posterior, arthroscopic iliac crest bone block grafting procedure represents a treatment option for posterior instability in the setting of a stable glenoid prosthesis following TSA.
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