Oxford domed lateral unicompartmental knee arthroplasty.

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Abstract

[Indexed for MEDLINE] 12. J Arthroplasty. 2024 Aug;39(8S1):S280-S284. doi: 10.1016/j.arth.2024.02.018. Epub 2024 Feb 13. Revision Total Knee Arthroplasty With an Imageless, Second-Generation Robotic System. Cochrane NH(1), Kim BI(1), Stauffer TP(1), Hallows RK(1), Urish KL(2), Carvajal Alba JA(3), Seyler TM(1). Author information: (1)Department of Orthopaedic Surgery, Duke University Medical Center, Durham, North Carolina. (2)Arthritis and Arthroplasty Design Group, The Bone and Joint Center, Magee Womens Hospital of the University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania; Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania; Department of Bioengineering, and Clinical and Translational Science Institute, University of Pittsburgh, Pittsburgh, Pennsylvania. (3)Department of Orthopaedic Surgery, University of Miami Health System, Miami, Florida. BACKGROUND: Robotic-assisted total knee arthroplasty is increasingly used in revision total knee arthroplasty (rTKA), with imageless systems recently receiving Food and Drug Administration (FDA) approval. However, there remains a paucity of literature on the use of robotic assistance in revision total knee arthroplasty (TKA). This paper describes the imageless surgical technique for robotic revision TKA using a second-generation robotic system and details both intraoperative and 90-day outcomes. METHODS: This was a retrospective review of 115 robotic revision TKAs from March 2021 to May 2023 at 3 tertiary academic centers. Patient demographics, perioperative surgical data, and 90-day outcomes were collected. Pain and Patient-Reported Outcomes Measurement Information System scores preoperatively and postoperatively were recorded. All-cause reoperations at the final follow-up were detailed. The mean patient age was 65 years (range, 43 to 88), and 58% were women. The mean follow-up time was 13 months (range, 3 to 51). RESULTS: The most common indications for rTKA were instability (n = 37, 32%) and aseptic loosening (n = 42, 37%). There were 83 rTKAs to a posterior-stabilized liner, 22 to a varus-valgus constrained liner, and 5 to a hinged construct. The median polyethylene size was 11 (interquartile range, 10 to 13), and 93% of patients had their joint line restored within 5 millimeters of the native contralateral knee. Within the 90-day postoperative window, there were 8 emergency department visits and 2 readmissions. At the final follow-up, there were 5 reoperations and 2 manipulations under anesthesia. There were 4 patients who required irrigation and debridement after superficial wound dehiscence, and one had an arthrotomy disruption after a fall. CONCLUSIONS: This review demonstrates favorable intraoperative and 90-day outcomes and suggests that imageless robotic surgery is a promising modality in rTKA. Further studies comparing the longitudinal outcomes after robotic and conventional rTKA are warranted. Copyright © 2024 Elsevier Inc. All rights reserved. DOI: 10.1016/j.arth.2024.02.018