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Robotic vs. manual knee alignment: which is better for heavier patients?

NCT ID NCT07646158

Symptom relief Sponsor: Jacob M. Elkins 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 compares two ways to align the knee during total knee replacement in 80 obese adults (BMI 35+). One method uses robotic or computer assistance, the other uses traditional manual tools. The goal is to see which leads to better knee motion and recovery after surgery.

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

Phase 4

Runs after approval, following long-term safety and how well the treatment works in everyday use.

Participants

About 80 people

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

Expected to start

Jul 2026

An estimate. Start dates often move.

Expected to finish

Dec 2029

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 to 100 years

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: * Being an adult (age \>= 18 years) * Being indicated for Total Knee Arthroplasty (TKA) for the treatment of non-inflammatory knee osteoarthritis by the PI or sub-investigators. * Having a body mass index (BMI) \>= 35 kg/m2 Exclusion Criteria: * Patients who are unable to provide written consent * Being under-age (age \< 18 years) * Having a BMI \< 35 kg/m2 * Having a non-elective TKA * Having a diagnosis of secondary or inflammatory, rheumatic, psoriatic, osteoarthritis of the index knee * Having a local or widespread infection * Being pregnant - Women who become pregnant at any point throughout the research study will become excluded/ineligible and will immediately stop all study activities. * Women who are capable of becoming pregnant and not currently on contraceptives will be excluded from this study because it will be difficult to obtain the weightbearing CT using the standard CT shield for pregnant women. * Having had a previous open surgery of the index knee * Presence of local or widespread infection * Having a revision TKA * Having a simultaneous bilateral TKA * Not being able to safely conduct study procedures - If patients are wheelchair bound or require an assistive device to stand for 5 minutes, they will be excluded from this study. * Non-English speakers * Prisoners

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Conditions

The condition(s) this trial relates to.

Obesity obesity disorder osteoarthritis osteoarthritis, knee Overweight

As listed by the trial registrant

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

Obesity & overweight Osteo arthritis of the knee

How to take part

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

  1. 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 ↗

  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.

More trials for these conditions

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