Anatomic total shoulder arthroplasty with inlay glenoid component: A systematic review

Area of Science:

• Orthopedic Surgery
• Biomedical Engineering
• Clinical Outcomes Research

Background:

• Total shoulder arthroplasty (TSA) aims to improve shoulder function and reduce pain.
• Glenoid component loosening is a significant concern in TSA, potentially impacting long-term outcomes.
• Inlay glenoid components are a proposed solution to enhance stability and patient outcomes.

Purpose of the Study:

• To systematically review the current literature on the clinical outcomes of TSA utilizing an inlay glenoid component.
• To evaluate the effectiveness of inlay glenoid components in improving functional scores and reducing complications.
• To assess patient-reported outcomes and range of motion following TSA with inlay glenoid components.

Main Methods:

• A systematic literature search was performed across major databases (PubMed/MEDLINE, Cochrane, Web of Science).
• Included studies compared pre- and postoperative functional and clinical outcomes in patients undergoing TSA with inlay glenoid components.
• Five studies involving 148 shoulders (133 patients) met the inclusion criteria.

Main Results:

• Significant improvements were observed in patient-reported outcomes, including the American Shoulder and Elbow Surgeons score, Penn Shoulder Score, and Single Assessment Numeric Evaluation.
• Visual analog scale for pain showed a marked decrease, indicating effective pain relief.
• Range of motion improved, with notable gains in forward elevation and external rotation.
• Glenoid component loosening occurred in only 0.68% of cases, with a 1.35% rate of revision surgery.

Conclusions:

• TSA with an inlay glenoid component demonstrates favorable short-term outcomes.
• This approach is associated with enhanced postoperative pain relief, improved function, and patient satisfaction.
• The inlay design appears effective in minimizing glenoid component loosening and the need for revision surgery.