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Your phone may predict joint replacement success

NCT ID NCT07212699

Knowledge-focused Sponsor: Technical University of Munich 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This pilot study tests a smartphone app that collects movement data and patient questionnaires to create a score that predicts satisfaction after knee or hip replacement. Researchers will enroll 1,250 people, including patients before or after surgery and healthy volunteers. The goal is to identify who might be unhappy with their results and improve care.

What this could mean

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

Active substance
KneeApp (smartphone app for data collection and functional tests)
What this could lead to
If successful, this could lead to a tool that helps doctors predict which patients may be unhappy after joint replacement, allowing earlier support.
What could go wrong
This is a small, early pilot study. The app is only in German and requires a smartphone, so results may not apply to everyone. The score is not yet proven to work.

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 1,250 people

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

Started

Oct 2025

Expected to finish

Aug 2028

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

Accepted

You do not need to have the condition being studied to take part.

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: * aged 18 years or older * german speaking * signed informed consent * using own smartphone Exclusion criteria: * age below 18 years. * Lack of informed consent * no smartphone * non-German-speaking

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Conditions

The condition(s) this trial relates to.

Alzheimer disease osteoarthritis, hip osteoarthritis, knee

As listed by the trial registrant

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

Hip arthroplasty Hip osteoarthritis Knee arthroplasty Knee 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

  • Department of Orthopaedics and Sports Orthopaedics TUM University Hospital Rechts der Isar

    RECRUITING

    Munich, Bavaria, 81675, Germany

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