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RecruitingNCT06563843Updated Aug 21, 2024

VRAS (Velys Robot-Assisted Solution) Operational Excellence Study

An observational study in Total Knee Arthroplasty (TKA), sponsored by DEO NV. Recruiting at 1 site in United Kingdom. Open to participants aged 18 Years to 100 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2024-08-21.

Sponsored by DEO NV · Observational

From the registry’s dates

  • Primary completion was expected by Nov 2025, 11 months ago, but the record still lists the study as recruiting.
Study type
Observational
Model
Case-crossover
Time perspective
Prospective
Enrollment
10
Ages
18 Years to 100 Years
Sex
All
01

Study summary

The aim of this study is to investigate the differences in process set-up, efficiency, OR team workload, instrument trays and OR financial performance when using the VRAS (Velys Robotic Assisted Solution) of DePuy Synthes compared to conventional TKA.

Read the detailed description

The increasing number of total knee arthroplasty (TKA) procedures is putting a significant burden on healthcare systems, surgeons and their surgical teams. Technology is introduced to improve accuracy, reproducibility and efficiency of TKA surgery, and a significant portion of the patient population is now being treated using Robotic Assisted Surgery. However, robotic surgeries are believed to have a longer procedure time.

The aim of this study is to investigate the differences in process set-up, efficiency, OR team workload, instrument trays and OR financial performance when using the VRAS (Velys Robotic Assisted Solution) of DePuy Synthes compared to conventional TKA.

In this multicentre study, measurements will be conducted in 10 hospitals with 10 selected surgeons across selected countries in Europe and the UK. For each surgeon enrolled, a minimum of five VRAS assisted surgical procedures and five conventional surgical procedures will be observed. The OR set-up will be similar for all cases in the same hospital. The same experienced surgeon will conduct all procedures.

02

Conditions studied

  • Total Knee Arthroplasty (TKA)

Keywords

  • VELYS
  • Total Knee Arthroplasty (TKA)
  • Process flow
  • Robotic-assisted surgery
  • Operational excellence
03

In context

Lead sponsor

DEO NV is the lead sponsor of 2 studies on the registry; 1 is open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 100 Years
Sexes eligible
All
Accepts healthy volunteers
Yes
Sampling method
Non-probability sample

Study population

The 10 participants of the study are orthopaedic surgeons. They will execute at least 5 conventional TKA procedures and at least 5 VELYS robot-assisted TKA procedures.

This study is observational, with a focus on operational excellence, and as such DEO.care will not influence surgeon's decisions with regards to surgical technique philosophies. Surgeon will select the relevant techniques for each case at his/her own discretion.

Inclusion criteria

  • Orthopaedic surgeons performing conventional and robot-assisted TKA

Exclusion criteria

Exclusion Criteria:

  • /
05

Study design

Observational model
Case-crossover
Time perspective
Prospective
Enrollment
10 participants (estimated)
Patient registry
No

Groups and cohorts

  • Performing VELYS robot-assisted TKA

    Surgeons performing VELYS robot-assisted TKA

    Procedure: Robotic-assisted TKA

  • Performing conventional TKA

    Surgeons performing conventional TKA

    Procedure: Conventional TKA

Interventions

  • ProcedureRobotic-assisted TKA

    Robotic-assisted Total Knee Arthroplasty or total knee replacement is a surgical procedure using a robot to resurface a knee joint damaged with arthritis, and where the knee joint of the patient is replaced with a prosthesis.

    Also known as: DePuy Synthes, Velys Robotic-Assisted Solution

  • ProcedureConventional TKA

    Conventional Total Knee Arthroplasty or total knee replacement is a surgical procedure to manually resurface a knee joint damaged with arthritis, and where the knee joint of the patient is replaced with a prosthesis.

    Also known as: DePuy Synthes, Attune Knee System, Sigma Total Knee System

06

What researchers measure

Primary outcomes

  1. Operational efficiency

    Efficiency will be assessed using OR time, by comparing the OR days and procedures where TKR is performed conventionally or by using VRAS surgery. A granular analysis from the timestamps will be conducted using standard descriptive statistics. Additionally, the impaction process will be further analyzed, broken down into parts.

    Time frame: 3 months

Secondary outcomes

  1. Ergonomic impaction - weight of trays

    Weight of trays will be measured to report ergonomic impaction of the team for the VRAS TKR compared to conventional TKR.

    Time frame: 3 months

  2. Ergonomic impaction - posture assessment

    Surgeon's posture assessment using RULA and REBA method will be executed to report ergonomic impaction for the VRAS TKR compared to conventional TKR.

    Time frame: 3 months

  3. Total procedure cost

    The procedure cost differences between VRAS TKR and conventional TKR will be calculated using activity based costing modeling. This model will include fixed direct, fixed indirect, and variable costs, tailored to each country's local cost parameters and healthcare financing models.

    Time frame: 3 months

07

Study locations

1 of 1 sites recruiting
  • Circle health group - BMI The Park hospital
    Nottingham, Ng5 8rx, United Kingdom
    • Benjamin Bloch, MD · Contact
    Recruiting
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 21, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06563843
Lead sponsor
DEO NV
Responsible party
Sponsor
First posted
Aug 21, 2024
Start date
Aug 27, 2024 (estimated)
Primary completion
Nov 2025 (estimated)
Completion
Jul 2026 (estimated)
Last update
Aug 21, 2024

Study contacts

Aline BR Vandeputte, Msc.
Contact
aline@deo.care
+32469154039
Jeroen Dille, Msc.
Contact
jeroen@deo.care
+32468290492
Willem Franssen, Msc.
study director · DEOcare
Benjamin Bloch, M.D.
principal investigator · Circle Health Group - BMI The Park Hospital

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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