ArticleJournal of orthopaedic surgery and research2026
From empirical to analytical: synergizing robotic assistance with customized implants for superior TKA outcomes.
Article in Journal of orthopaedic surgery and research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundDespite advancements in robotic-assisted total knee arthroplasty (TKA), improvements in patient satisfaction remain limited. This study aimed to compare outcomes and satisfaction among three TKA approaches: robotic-assisted TKA with patient-specific implants, robotic-assisted TKA with off-the-shelf implants, and manual TKA with off-the-shelf implants.
methodsA retrospective cohort study was conducted on 140 knees who underwent TKA between December 2022 and December 2024. Patients were categorized into three groups: RA-C group (n = 43), which underwent robotic-assisted TKA with customized implants; RA-O group (n = 45), which received robotic-assisted TKA using Mako system with off-the-shelf implants; and Manual group (n = 52), which underwent conventional manual TKA using AK A3 GT implants. Customized implants in RA-C group were individually designed based on preoperative CT scans to optimize bony coverage and sagittal curvature, and featured separate medial and lateral tibial inserts. Outcomes included alignment, Knee Injury and Osteoarthritis Outcome Score (KOOS), Forgotten Joint Score (FJS), and a 5-level patient satisfaction scale.
resultsNo significant differences were found in baseline demographics. In terms of post-operative outcomes, The RA-C group demonstrated significantly higher patient satisfaction than other groups (86.0% very satisfied, 11.6% satisfied and 2.3% neutral, P = 0.002). The RA-C group also presented a higher FJS-12 score (78.0 ± 14.2) compared to the Manual group (67.4 ± 20.2, P = 0.012).
conclusionSynergizing robotics with customized implants showed superior satisfaction and functional outcomes compared to robotic-assisted TKA with off-the-shelf implants and manual TKA. Based on robotic assistance, the use of patient-specific implants may yield further benefits.
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