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Knee replacement recovery gets a tech boost: apps aim to get patients moving

NCT ID NCT04482400

Symptom relief Sponsor: University of South Carolina 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tested two smartphone-based programs designed to help people who had a knee replacement sit less and move more. 83 participants used either a sedentary reduction app or a recovery education app for 8 weeks. Researchers measured their sitting time, physical function, and pain at 2 and 5 months to see if the apps improved recovery.

What this could mean

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

Active substance
smartphone-based behavioral programs (NEAT!2 and MyKneeGuide)
What this could lead to
If successful, these smartphone programs could offer a simple, low-cost way to help knee replacement patients become more active and recover better.
What could go wrong
This is a small, early-stage study with only 83 participants, so results may not apply to everyone. The programs are behavioral, so success depends on patient motivation and adherence.

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

83 people

The number who actually took part.

Started

Aug 2020

Finished

Oct 2024

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

40 to 79 years

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: * Be 40-79 years of age * Had unilateral knee replacement within last 12 months * Have an Android or iOS smartphone that is accessible and near them the majority of the day * Be willing to download the study applications on their smartphone * Spend at least 7 hours/day sitting * Be English speaking Exclusion Criteria: * Have any contraindications to activity * Have a mobility limiting comorbidity * Have a scheduled surgery within the next 6 months * Do not have ≥4 days of valid accelerometer (\>=10 hours) wear at baseline.

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As listed by the trial registrant

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

Knee arthroplasty

Contacts and locations

Locations

  • University of South Carolina

    Columbia, South Carolina, 29208, United States

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