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Knee surgery tech may cut radiation: study tests CT-Free navigation

NCT ID NCT07574775

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 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This study looked at 50 adults having knee replacement surgery to see if a computer-guided tool (imageless navigation) can measure key knee angles as accurately as a CT scan. The tool creates a digital model of the knee during surgery, which could avoid the need for a preoperative CT scan. Researchers compared the angle measurements from the tool to those from CT scans to check if they match.

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

50 people

The number who actually took part.

Started

Jul 2025

Finished

Oct 2025

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: Patients aged 18 years or older. Patients with primary or secondary knee osteoarthritis requiring a Total Knee Arthroplasty (TKA). Patients for whom the surgical planning requires a pre-operative 3D CT scan. Patients who have been informed about the study and have signed the written informed consent. Patients affiliated with or beneficiaries of a social security scheme. Exclusion Criteria: Revision Total Knee Arthroplasty (re-operation). Major bone loss or significant bone deformity that prevents reliable anatomical landmarking. History of prior knee surgery that could interfere with the navigation system trackers (e.g., retained hardware in the femur or tibia). Pregnant or breastfeeding women. Persons deprived of liberty or under legal guardianship. Patients with a known allergy to any component used during the standard surgical procedure.

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Conditions

The condition(s) this trial relates to.

osteoarthritis, knee

As listed by the trial registrant

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

Arthroplasty Bone morphing Knee osteoarthritis

Contacts and locations

Locations

  • Groupe hospitalier Diaconesses Croix Saint Simon

    Paris, 75020, France

More trials for these conditions

Other studies related to the condition(s) this trial covers.