Evidence map›Paper›PMID 39931150›Full record

ArticleJournal of experimental orthopaedics2025

VELYS robotic-assisted total knee arthroplasty: Enhanced accuracy and comparable early outcomes versus manual instrumentation during adoption.

Timothy B Alton, Erik P Severson, Marcus C Ford, James Lesko, Ian J Leslie

Abstract read
In one paragraph

Article in Journal of experimental orthopaedics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 2 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

15 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. [Research progress of robot-assisted total knee arthroplasty for valgus knee from perspective of precision medicine].Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery · 2026
    Review
  9. Review
  10. Review
  11. Article
  12. Article
  13. Review
  14. Review
  15. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Timothy B AltonProliance Orthopedic Associates Renton Washington USA.
Erik P SeversonMinnesota Center for Orthopaedics Crosby Minnesota USA.ORCID 0000-0003-3928-0217
Marcus C FordCampbell Clinic Germantown Tennessee USA.ORCID 0000-0002-5078-9076
James LeskoDePuy Synthes Warsaw Indiana USA.ORCID 0000-0003-1178-2741
Ian J LeslieDePuy Synthes Leeds UK.ORCID 0009-0004-2014-3014

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Purpose: This study assessed the accuracy and early clinical outcomes of the VELYS™ Robotic-Assisted solution for total knee arthroplasty (TKA). Methods: A multicenter, prospective non-randomized 1:1 cohort study was conducted at five sites. Subjects underwent TKA with either manual instrumentation or with robotic-assistance (RA). RA procedures were the first conducted at each site, therefore, representing the adoption phase for each surgeon. Mechanical alignment was targeted in the manual arm, while the target and technique varied in the RA arm. The primary objective was a non-inferiority (NI) analysis of the accuracy of the hip-knee-ankle (HKA) for RA versus manual, with a 1.5° NI margin. The accuracy of the mechanical medial distal femoral angle (mMDFA), mechanical medial proximal tibial angle (mMPTA) tibial posterior slope (TPS) angles were measured. Adverse events (AEs) and patient-reported outcome measures (PROMs) were collected at 12 weeks and 1 year. Results: One hundred participants were recruited for both manual and RA groups, the mean preoperative demographics and PROM scores were similar. The primary endpoint NI analysis was successful ( Conclusions: This study found that the RA system can be safely adopted without adversely impacting the long leg alignment or increasing the risk of complications. Further, it was observed that the accuracy of the femoral and tibial component positioning was improved, and there were positive trends in the rate of serious AEs and some PROMs at early follow-up. Level of Evidence: Level II.

Indexed as

accuracycomparativelevel IIprospectiverobotic‐assistedVELYS

Identifiers

PMID39931150
PMCPMC11808256

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.