Reverse Total Shoulder Arthroplasty with a Superior Augmented Glenoid Component for Favard Type-E1, E2, and E3...

Area of Science:

• Orthopedic Surgery
• Biomedical Engineering
• Musculoskeletal Research

Background:

• Superior glenoid wear in reverse total shoulder arthroplasty (rTSA) can lead to complications like baseplate failure.
• Favard types E1, E2, and E3 glenoid deformities present unique challenges in shoulder arthroplasty.
• Augmented glenoid baseplates aim to address complex glenoid anatomy and improve outcomes.

Purpose of the Study:

• To evaluate the clinical and radiographic outcomes of rTSA using superior or superior/posterior augmented baseplates for Favard type E1, E2, and E3 glenoid deformities.
• To quantify improvements in shoulder range of motion and patient-reported outcome scores.
• To assess the complication rates associated with this surgical technique.

Main Methods:

• Retrospective review of 68 patients undergoing primary rTSA with augmented baseplates for specific glenoid deformities.
• Follow-up averaged 40 months, assessing range of motion and outcome scores (SST, UCLA, ASES, Constant, SPADI).
• Preoperative and postoperative radiographs were analyzed; statistical analysis used a 2-tailed Student t test.

Main Results:

• Significant improvements in pain and function were observed, with 94% of patients reporting feeling
• better
• or
• much better
• . * At least 88% of patients exceeded the minimum clinically important difference (MCID) and 75% exceeded the substantial clinical benefit (SCB) thresholds for key metrics.
• Five complications (7.4%) were reported, including fractures and aseptic loosening.

Conclusions:

• rTSA with superior or superior/posterior augmented baseplates is a successful short-term treatment for shoulder arthropathy with superior glenoid wear patterns (Favard types E1-E3).
• The technique demonstrates promising clinical and functional improvements.
• Longer-term follow-up is required to confirm the durability of these outcomes.