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Shedding pounds after knee surgery: new study tests if weight loss eases pain

NCT ID NCT05190666

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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 looks at whether a weight loss program designed for adults who have had a knee replacement can help them lose weight, be more active, and have less pain and better function. About 182 overweight or obese adults who had knee replacement within the last 6 months will take part. The program is compared to a standard chronic disease self-management program to see which works better and is more cost-effective.

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

182 people

The number who actually took part.

Started

Jan 2022

Expected to finish

Jul 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

Children (under 18), adults (18 to 64) and older adults (65 and over)

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: Participants must: * have a body mass index between 25-45 kg/m2 * have had a knee replacement (including primary, staged or independent bilateral, or revision) \<6 months prior to baseline assessment * have a computer, tablet, or smartphone with active internet access to self-monitor online and/or have a device or computer compatible with Fitbit * completion of baseline assessment measures (height, weight, function tests, surveys, ≥4 days valid of activity monitoring, and 1 day of dietary recall) * be English-speaking and able to read consent and study materials written in English * be willing to attend 4 in-person assessments. Exclusion Criteria: * have any contraindications to diet or weight loss * undergo simultaneous bilateral knee replacement or have a scheduled or anticipated knee replacement for the contralateral knee within the next 18 months * have a mobility limiting comorbidity unrelated to knee replacement (e.g. spinal stenosis, fibromyalgia, peripheral vascular disease, stroke) * are taking anti-obesity medications * are enrolled in a formal weight loss program * had or are planning to have bariatric/gastric/lap band surgery * are planning to relocate out of the Columbia or Greenville, SC areas in the next 18 months.

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Conditions

The condition(s) this trial relates to.

Obesity obesity disorder Overweight

As listed by the trial registrant

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

Arthroplasty Overweight and obesity

Contacts and locations

Locations

  • University of South Carolina

    Columbia, South Carolina, 29208, United States

More trials for these conditions

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