Total Versus Robotic Assisted Unicompartmental Knee Replacement
Total Versus Robotic Assisted Unicompartmental Knee Replacement (TRAKER) for Medial Compartment Osteoarthritis: Randomised Controlled Trial
- Osteo Arthritis Knee
- Arthritis Knee
- Arthropathy of Knee
At a glance
- Phase
- Phase not stated
- Study type
- Interventional
- Sponsor
- NHS Lothian
- Enrolment target
- 159
- Started
- 26 August 2024
- Main results due
- 31 December 2026
- Study sites
- 1
- Registry updated
- 23 September 2026
Can you take part?
- Ages 50 years to 75 years.
- Open to any sex.
- You need the condition being studied — healthy volunteers are not accepted.
These are the headline rules only. Every study has a longer list, and whether you are eligible is decided by the research team at the site — never by this page.
Read the full eligibility criteria
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,
What this study is about
In the sponsor’s own words, from the registry.
The purpose of this research is to compare the functional outcomes of patients with end stage medial compartment OA of the knee undergoing a conventional mTKA to those undergoing rUKA and to assess the associated cost economics of such technology.
Study sites(1)
Nicholas Clement
Edinburgh, Lothian, United Kingdom
Recruiting
Showing 1 of 1 sites. 1 of the 1 site on this study is recruiting right now — a site can stop enrolling while the study as a whole is still open.
Source: ClinicalTrials.gov record NCT05290818. Trialion does not run this study, is not paid to refer anyone to it, and cannot enrol you. Eligibility is always decided by the research team at the site.
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