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Early results of augmented anatomic glenoid components
Michael Priddy1, Ali Zarezadeh1, Kevin W Farmer1
1Department of Orthopaedic Surgery and Rehabilitation, University of Florida, Gainesville, FL, USA.
Journal of Shoulder and Elbow Surgery
|June 15, 2019
Summary
Augmented glenoid components offer similar clinical outcomes to standard implants for total shoulder arthroplasty (TSA). However, the 16° augmentation showed higher failure rates and is no longer used.
Area of Science:
- Orthopedic Surgery
- Biomaterials Science
- Radiology
Background:
- Posterior glenoid bone loss in shoulder arthroplasty necessitates bone preservation and native joint line restoration.
- Augmented glenoid components aim to address these challenges.
Purpose of the Study:
- To compare clinical and radiographic outcomes of augmented total shoulder arthroplasties (TSAs) versus case-matched standard implants.
- To assess the early performance of a specific full-wedge augmented glenoid component.
Main Methods:
- Retrospective review of 37 augmented TSAs and 37 matched control TSAs with standard components.
- Minimum 2-year follow-up, analyzing revision rates, glenoid lucencies, range of motion (ROM), and patient-reported outcomes (PROs).
Main Results:
- Both augmented and standard TSAs showed comparable improvements in ROM and PROs.
- Augmented components were more common in B2/B3 posterior bone loss.
- Similar rates of radiographic lucencies and reoperations were observed between groups.
- The 16° augmentation showed a higher failure rate compared to 8°.
Conclusions:
- Posteriorly augmented glenoid components provide similar functional outcomes to standard components in TSA.
- Radiographic loosening and revision rates were comparable.
- The 16° full-wedge augmentation demonstrated a higher failure rate and is discontinued.
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