Sensors track knee movement before and after replacement surgery

NCT ID NCT05488093

Knowledge-focused Sponsor: University Hospital, Montpellier Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study uses small wearable sensors to measure how people with severe knee osteoarthritis move before and after total knee replacement surgery. Researchers will track 20 patients over age 60 to see if these sensors can detect changes in knee motion and pain. The goal is to find simple, quick ways to measure improvement after treatment.

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 could lead to better ways to measure movement problems in knee osteoarthritis and help doctors evaluate how well treatments like knee replacement work.
What could go wrong: This is a very small, early-stage observational study with only 20 participants. It is not testing a treatment, so it may not lead to any direct patient benefit.

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 20 people

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

Started

Mar 2023

Expected to finish

Mar 2027

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

60 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 over 60 years old * Presence of unilateral knee osteoarthritis (Kellgren and Lawrence radiographic stage ≥ 3) in the femorotibial compartment and/or Iwano stage ≥2 in the femoropatellar compartment); * Average VAS (Visual Analogic Scale) pain on a reference joint (knee) \> 40/100 during the past month. * Indication for prosthetic knee surgery (total knee replacement) * Failure of a well-conducted medical treatment (at least one prior infiltration with corticoids or hyaluronic acid or PRP (Platelet-rich plasma)) Exclusion Criteria: * Presence of an inflammatory joint disease (rheumatoid arthritis, spondyloarthritis, microcrystalline pathology) * Presence of a post-traumatic gonarthrosis * Frontal deformity of the lower limb \> 15 * Preoperative flessum \> 15° or preoperative knee mobility \< 90° * Neurological pathology * Spinal pathology that is painful or causes deformity (severe Cobb scoliosis \> 20°) * History of trauma or surgery of the lower limbs in the last two years, * Presence of at least one lower limb prosthesis (total hip or ankle prosthesis) * Subject with a contraindication to MRI examination (pacemaker, neurosensory stimulators, cardiac defibrillator, cochlear implants, ferromagnetic ocular or cerebral foreign bodies...) * Subjects with a contraindication to DXA examination (coronary stent or metallic cardiac sutures, pacemaker or automatic defibrillator, obesity with a BMI \> 35kg/m2, insulin pump, weight over 200kgs) * Subject with a legal protection measure (guardianship, curatorship) * Subject under legal protection * Subject not affiliated to a social security system or not benefiting from such a system * Absence of informed written consent

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Conditions

The condition(s) this trial relates to.

osteoarthritis, knee Sarcopenia

As listed by the trial registrant

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

Knee osteoarthritis

How to take part

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

The places running it

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

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

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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.

Sensors track knee movement before and after replacement surgery

What the study statuses mean