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Robotic knee surgery vs. total knee replacement: which is better?

NCT ID NCT05290818

Disease control Sponsor: NHS Lothian 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 study compares two types of knee replacement surgery for people with advanced knee arthritis: a standard total knee replacement and a robotic-assisted partial knee replacement. The goal is to see which one leads to better knee function and is more cost-effective. About 159 adults aged 50 to 75 who are already scheduled for knee replacement will take part.

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 159 people

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

Started

Aug 2024

Expected to finish

Dec 2027

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

50 to 75 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: * Listed for elective primary TKA for end stage medial compartment osteoarthritis * Intact anterior cruciate ligament * Full thickness and good quality lateral cartilage * Correctable intra-articular varus deformity and intact medial collateral ligament * American Society of Anesthesiologists (ASA) grades 1 and 2 * Male or female, age 50 - 75 at the time of listing for surgery * Suitable candidate for a cruciate retaining TKA (Triathlon prosthesis) and a UKA Exclusion Criteria: * Varus deformity of \> 20 degrees * Fixed flexion of \>10 degrees * Patient is unable to comply with the study protocol (incl. refusal for CT scan) or functional assessments * Female participants who are pregnant, lactating or planning pregnancy during the course of the study * Requires patella resurfacing or lateral compartment has significant OA * Inability to understand the patient information for the study, provide written informed consent or answer study questionnaires for cognitive or language reasons * Inflammatory disorder e.g. rheumatoid arthritis * Symptomatic foot, hip or spine pathology * Prior surgery (other than arthroscopy) or septic arthritis of the knee * Any other significant disease or disorder which, in the opinion of the Investigator, may either put the participants at risk because of participation in the study,

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Conditions

The condition(s) this trial relates to.

arthritic joint disease osteoarthritis, knee

As listed by the trial registrant

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

Arthritis knee Arthropathy of knee Osteo arthritis knee

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

  • Nicholas Clement

    RECRUITING

    Edinburgh, Lothian, EH16 6SA, United Kingdom

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