Background: Manual total knee arthroplasty (TKA) have been documented several times for their safety and complications data. In contrast, there is a limited evidence-based analysis for safety and complications of autonomous robotic-assisted (RA) TKA. This study aimed to evaluate the safety features and intra-operative surgical complications associated with the use of Cuvis autonomous robotic system for TKA.
Methods: The study included 500 consecutive patients who underwent TKA using the Cuvis Joint™ autonomous robotic system from November 2020 to November 2021. All surgeries were performed by a senior surgeon. Patients in whom the surgery was abandoned midway due to technical errors, were excluded from the analysis. In case of unilateral abandonment of the robotic arm during a bilateral RA-TKA, data of the side on which the surgery was completed with robotic assistance was recorded.
Results: There was no incidence of neurological injury, vascular injury, extensor mechanism disruption, or medial collateral ligament injury. There was one case of superficial abrasion of the patellar tendon; however, it did not require any intervention. There were no cases midway abandonment due to threatened soft tissue injury. There was no intra-operative pin loosening or stress-related fractures at the pin sites. There was one case of pin breakage and another case of drill bit breakage, which were removed without any damage to the bone.
Conclusion: The Cuvis active robotic system for TKA is safe with no significant intra-operative complications.
Authors: Chandrashekar Pa, Adarsh Babu Ka, Nagaraja H Sa, Gangu Hiral Sa, Karthikeyan Sa, Supreet Bajwab.
Keywords: Autonomous robot, Cuvis joint, intra-operative complications, robotic-arm assisted total knee arthroplasty, active robotic total knee arthroplasty.