SynthesisJournal of robotic surgery2026
Robotic-assisted conversion of unicompartmental to total knee arthroplasty: a systematic review.
Synthesis in Journal of robotic surgery, 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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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
8 authors.
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Abstract
Conversion of unicompartmental knee arthroplasty (UKA) to total knee arthroplasty (TKA) presents technical challenges due to bone loss and altered anatomy, often requiring stems or augments. Robotic-assisted systems have emerged as a potential solution by improving precision and bone preservation. This systematic review evaluates robotic assistance in UKA-to-TKA conversion and its impact on surgical performance and outcomes. This review followed PRISMA guidelines and was registered in PROSPERO (CRD42025643211). A systematic search of PubMed, Embase, and Scopus was conducted through October 2025. Eligible studies reported outcomes of robotic-assisted UKA-to-TKA conversions with a mean follow-up of 20.9 months. Two reviewers independently screened studies and extracted data on demographics, perioperative variables, functional outcomes, complications, and implant survivorship. Risk of bias was assessed using the ROBINS-I tool. Five studies including 136 patients (140 knees) were analyzed. Most cases (n = 105) used the MAKO SmartRobotics™ System, while the remainder (n = 35) used the ROSA Knee System. No intraoperative conversions to manual technique occurred. Augments were required in 13.6% of cases and stems in 3.6%. Range of motion improved to 119-130° flexion with full extension. Patient-reported outcomes demonstrated improvements in r-WOMAC and OKS, with favorable postoperative FJS. Complication rates ranged from 0 to 11%, including one intraoperative tibial fracture (0.7%), two periprosthetic joint infections, three stiffness cases, and one aseptic loosening. Implant survivorship ranged from 93.2% to 100% at up to 3.6 years follow-up. Robotic-assisted UKA-to-TKA conversion demonstrates reproducible intraoperative performance, minimal need for augments, and favorable short-term outcomes. Longer-term studies are needed to confirm durability.Level of evidence: Level IV.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.