ArticleJournal of robotic surgery2025
Early radiological outcomes of imageless robotic-assisted total knee arthroplasty with VELYS: a comparative study of CPAK varus vs. valgus phenotypes.
Article in Journal of robotic surgery, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
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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.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
2 citing papers in PubMed.
- Use of the VELYS Robotic-Assisted Solution in knee arthroplasty: A scoping review.Journal of experimental orthopaedics · 2026Review
- Comment on: "Early radiological outcomes of imageless robotic-assisted total knee arthroplasty with VELYS: a comparative study of CPAK varus vs. valgus phenotypes".Journal of robotic surgery · 2025Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Robotic-assisted total knee arthroplasty (RATKA) offers enhanced intraoperative accuracy and real-time feedback. This study evaluates mid-term radiological outcomes of imageless RATKA in patients with mild and severe varus or valgus deformities, focusing on alignment accuracy and post-surgical outliers. A retrospective analysis was conducted on 257 patients who underwent RATKA. Demographic data, BMI, operative side, and key radiographic parameters-including pre- and postoperative hip-knee-ankle (HKA) angle, coronal alignment, joint line obliquity (MPTA + LDFA), tibial slope, and implant details-were recorded. Alignment phenotypes were classified using the CPAK system: Group 1 (varus phenotypes: CPAK I, IV, VII) and Group 2 (valgus phenotypes: CPAK III, VI, IX). RATKA significantly improved alignment in both groups. In Varus Group 1 (N = 181), maximum extension improved (p < 0.001), flexion remained unchanged. JLO and HKA improved (p < 0.001). In Valgus Group 2 (N = 60), extension improved (p < 0.001) with no flexion change. Group 2 had closure to neutral post-operative HKA and JLO (p < 0.001), aligning with close to CPAK 5 Neutral. Tibial resection was lower in Group 2 (7.43 ± 0.96) mm vs. (8.68 ± 1.45 mm). One tibial recut and one revision observed. Liner use favored 5 mm (80.11%) in Group 1, (90%) in Group 2. RATKA effectively optimized alignment and minimized tibial resection in valgus and varus deformities. Imageless RATKA provides accurate alignment correction in both varus and valgus deformities, even in severe cases. It enables minimal tibial resection and precise, balanced placement of cruciate-retaining implants, underscoring its role in optimizing modern TKA outcomes.
Indexed as
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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.