METHODS: This is a single surgeon series of 14 cases of moderate and severe valgus osteoarthritic knees who underwent robotic-assisted TKA, utilizing the robotic surgical assistant ROSA® System.
RESULTS: All patients were restored to within 3° of the planned alignment. 8 patients were implanted with cruciate retaining implants, 2 had ultracongruent implants, 3 had posterior stabilized implants, and 1 had a constrained posterior stabilized implant. No patients required release of the popliteus tendon or origin of the lateral collateral ligament. No perioperative complications were encountered in all cases. All patients reported an improvement in the Forgotten Joint Score of > 10.8 at 1year follow up with a 100% satisfaction rate.
CONCLUSION: In this case series, the utilization of robotic assisted the surgeon to achieve a final limb alignment to within 3° of the planned alignment with minimal use of constrained prostheses and good patient-reported outcomes in moderate and severe valgus deformities.