Revision Reverse Total Shoulder Arthroplasty Using an Augmented Glenoid Baseplate: A Review of Current Glenoid Baseplate Options and a Case Report

Introduction: Total and hemi-shoulder arthroplasty have proved to be a safe and effective option for patients with symptomatic osteoarthritis. In some cases, glenoid implant failures or erosion can lead to acquired glenoid bone loss, complicating potential revision surgery. This paper presents a review of glenoid implant options for total shoulder arthroplasty and a case study which discusses a new augmented reverse baseplate for the revision of a failed hemi-shoulder arthroplasty. The patient was fully informed and gave written consent to submit the details of this case for publication in a peer-reviewed journal. Case Description: An 80-year-old retired professor with a prior history of right shoulder hemiarthroplasty presented with worsening right shoulder pain. She failed conservative care and wanted a conversion to a reverse total shoulder arthroplasty. The erosion on the patient's glenoid was severe enough for the surgeon to elect for the use of a metal augmented baseplate to fill the acquired defect and correct version and inclination. After an uneventful postoperative and recovery progression, at her one-year follow-up visit, she was pain-free and active, with significant improvements in her visual analogue scale (VAS) score, American Shoulder and Elbow Surgeons (ASES) score, and active range of motion (ROM). Discussion: The advent of metal augmentation with advanced glenoid preparation instruments allows shoulder specialists the ability to address implant-associated acquired glenoid bone loss and soft tissue deficiencies with ease and confidence and reduce additional clinical challenges.