Massive study to reveal best knee implant for arthritis patients
NCT ID NCT07553871
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks back at medical records of 3,500 adults who had a first-time knee replacement to compare different brands of knee implants. Researchers want to see which implant leads to better knee function, fewer complications, and lower costs over time. The goal is to help doctors and hospitals choose the best prosthesis for each patient.
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Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 3,500 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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May 2026
An estimate. Start dates often move.
- Expected to finish
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Dec 2030
An estimate. End dates often move.
- Lead sponsor
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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.
Who is studied
The study population will include adult patients who underwent first-time unilateral primary total knee arthroplasty at the Second Affiliated Hospital of Wenzhou Medical University between January 1, 2022 and December 31, 2025. Eligible patients must have complete perioperative records, prosthesis model information, cost data, and postoperative follow-up records. Patients undergoing revision arthroplasty, simultaneous bilateral arthroplasty, concomitant arthroplasty of other joints, or arthroplasty for tumor or acute trauma will be excluded.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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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 Hide 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: * Age \>= 18 years. * Diagnosis of end-stage knee osteoarthritis, rheumatoid arthritis, or other conditions meeting the indication for TKA. * First-time unilateral knee arthroplasty. * Complete medical records, including perioperative records, prosthesis model records, detailed cost information, and regular postoperative follow-up records. Exclusion Criteria: * Revision knee arthroplasty, simultaneous bilateral arthroplasty, or concomitant arthroplasty of other joints. * Arthroplasty performed for non-degenerative conditions such as tumour or acute trauma. * Perioperative death or loss to follow-up. * Severely incomplete clinical data that preclude valid analysis.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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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.
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Other studies related to the condition(s) this trial covers.
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