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Robot vs. navigation: which knee surgery tech wins?

NCT ID NCT07574762

Knowledge-focused Sponsor: Groupe Hospitalier Diaconesses Croix Saint-Simon Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study compares two advanced technologies used in total knee replacement: computer-assisted navigation and robotic-arm assistance. Both aim to place the new knee joint more precisely. The trial will follow 140 patients for two years to see if one method helps them forget they have an artificial knee more than the other. The goal is to find out if the extra cost and complexity of robotic surgery leads to better results.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If successful, this study could show that robotic-arm assistance offers no major advantage over standard navigation for knee replacement, helping surgeons choose the most effective and cost-efficient technique.
What could go wrong
This is a relatively small, single-center trial comparing two similar technologies. The results may not apply to all patients or surgeons, and the study is not designed to prove one method is superior.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 140 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jan 2026

Expected to finish

Jan 2029

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Patient providing written informed consent according to regulatory requirements * Male or female patients aged ≥18 years * Patients undergoing primary total knee arthroplasty for osteoarthritis * Use of Attune® prosthesis with posterior cruciate ligament retention (CR) and patellar resurfacing Exclusion Criteria: * History of ligament reconstruction * Previous fracture or bone surgery (osteotomy) of the ipsilateral femur or tibia (except hip or ankle surgery) * Preoperative knee stiffness with flexion contracture \>15° or flexion \<90° * Individuals deprived of liberty by judicial or administrative decision * Patients not affiliated with a social security system * Patients unable to understand French * Patients with cognitive impairment * Patients whose place of residence makes close clinical follow-up impossible -- Women of childbearing potential without effective contraception * Pregnant or breastfeeding women

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Conditions

The condition(s) this trial relates to.

osteoarthritis

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Osteoarthritis

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Groupe hospitalier Diaconesses Croix Saint Simon

    RECRUITING

    Paris, Paris, 75020, France

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