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AI-Powered app may cut hospital stays after knee surgery

NCT ID NCT07502040

Symptom relief Sponsor: Hull University Teaching Hospitals NHS Trust 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 study tests whether an AI-based exercise app (Kemtai) can help people recover faster after total knee replacement surgery. The app tracks your movements and gives real-time feedback, unlike the standard paper handout. Researchers will measure how long people stay in the hospital and how many physiotherapy visits they need. The study involves 40 adults scheduled for knee replacement at two UK hospitals.

What this could mean

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

Active substance
Kemtai digital app (AI-based motion tracking exercise programme)
What this could lead to
If it works, this could help people recover faster after knee replacement surgery with less need for in-person physiotherapy.
What could go wrong
This is a small feasibility study with only 40 participants, so results may not apply to everyone. The app requires a compatible device and internet access, which could limit use.

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 40 people

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

Expected to start

Mar 2026

An estimate. Start dates often move.

Expected to finish

Nov 2026

An estimate. End dates often move.

Lead sponsor

A government agency

The lead sponsor is a government body.

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: 1. Adults aged ≥18 years. 2. Referred to Hull University Teaching Hospitals NHS Trust t for Knee Arthroplasty at either Castle Hill Hospital or Goole District Hospital and has access to pre operative resources offered by the joint school physiotherapists. 3. Has access to a device which is compatible with the operational requirements of the Kemtai programme. 4. Able to give informed consent. Exclusion Criteria: • Significant comorbid physical or mental illness considered by the investigator to either: prevent engagement in modified exercise; impair the participants ability to follow instructions place the participant at undue risk during exercise training adversely affect the recovery or rehabilitation trajectory * Patients already involved in an exercise or rehabilitation study will be excluded from this study. * Unwilling or unable to consent or complete study measures. * Has insufficient understanding of English or the languages that are supported by the Kemtai programme and does not have someone who can translate. * Is a prisoner * Has had a total hip replacement within the previous 6 months. * Is attending for revision of a previous knee replacement * Is having a knee replacement due to a tumour * Lacks visual acuity sufficient to follow stimuli on monitor or has someone who can give necessary verbal prompts * Severe genu varum or genu valgum deformity which precludes the ability to exercise using the Kemtai programme.

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Conditions

The condition(s) this trial relates to.

Motor Activity

As listed by the trial registrant

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

Knee arthroplasty, total

How to take part

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

  1. The official record

    The full official record for this study. This one lists no contact details, but it is the first place any would appear.

    Open the record ↗

  2. 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.

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