Objective:

To measure the precision and accuracy of acetabular component positioning of revision robotic-arm assisted total hip arthroplasty (RA-THA) compared to a manual total hip arthroplasty (M-THA) benchmark.

Approach:

• Study Design: Cadaveric study using seven fresh-frozen cadavers with previously undergone primary THA, focusing on acetabular inclination, version, and center of rotation.
• Surgical Procedure: Revision RA-THA performed using the Mako Total Hip Application, with preoperative CT scans for planning and postoperative CT scans for analysis.
• Surgeon Volume Categorization: Surgeons categorized based on annual case volume: high (>150 cases), medium (25-150 cases), and low (<25 cases).

Key Findings:

• Robotic assistance improves the accuracy of acetabular component placement in revision THA.
• The study measured absolute differences between planned and executed acetabular angles and center of rotation.

Interpretation:

Limitations:

• Small sample size of cadavers may limit generalizability.
• Exclusion of two cases due to protocol deviations may affect results.

Conclusion: