Outcomes of Total Knee Arthroplasty Using a DePuy VELYS Robotic Knee System

Background: Total knee arthroplasty (TKA) goals to restore characteristics and alleviate pain in patients with advanced osteoarthritis.The success of surgery depends on implant design and surgical precision.This study evaluates the operative metrics and clinical recovery of TKA patients treated with the DePuy VELYS robotic knee system.Methods: Prospective study included 440 patients of primary TKA using the DePuy VELYS Knee System.Besides the demographics, data collection included planned and actual bone resections, varus/valgus alignment, and tibial slope.Pre-and postoperative Knee Society rankings, FJS-12 across 4 age demographics, blood loss, surgery time, hospital stay, complication rate, and revision surgery required are also noted.Patient satisfaction rate and expectation fulfilment rate are documented 6 months after surgery.Statistical significance and correlation are assessed using p-values and Spearman correlation coefficient (ρ).Results: Actual femoral and tibial resections remained within 0.3 ± 0.2 mm; varus/valgus alignment within 0.4° ± 0.3° and tibial slope within 0.2° ± 0.7° of the plan, indicating high surgical precision.A moderate-to-strong correlation ( = 0.55-0.84)existed between planned and actual bone resections.PROMs such as Knee society score-knee, KSS-functional scores, and FJS-12 showed significant gain (p < 0.001) with postoperative mean of 91.7 ± 5.5, 90.8 ± 7.3, and 73.2 ± 6.4, respectively.We observed a minimum complication rate of 1.36% (n = 6) with no revision surgery (0%) required.Patients reported a significantly high satisfaction rate (96.2%) and expectation fulfilment rate (94.1%). Conclusion:The DePuy VELYS Knee System demonstrates high surgical precision and clinical reliability.By achieving neutral mechanical alignment and balanced resections, we achieved significant functional recovery and high patient satisfaction across all age groups.