Knee replacement showdown: old vs. new alignment method
NCT ID NCT06486714
First seen Jun 25, 2026 · Last updated Aug 28, 2026 · Updated 3 times
Summary
This study compares two surgical techniques for total knee replacement: mechanical alignment (the traditional method) and kinematic alignment (a newer approach). Researchers want to see which method leads to less pain and better knee function after surgery. About 96 adults with knee osteoarthritis will be randomly assigned to one of the two procedures and followed for up to two years.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- total knee arthroplasty (surgical procedure)
- What this could lead to
- If one alignment method proves better, it could lead to improved pain relief and knee function after replacement surgery.
- What could go wrong
- This is a small, early-stage trial with only 96 patients. Results may not apply to everyone, and both methods are already in use, so a major breakthrough is unlikely.
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
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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
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About 96 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Jan 2027
An estimate. Start dates often move.
- Expected to finish
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Jun 2028
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.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Patients 18 years or older presenting to our institutions indicated for a primary total knee arthroplasty Exclusion Criteria: * Revision TKA * Patients with prior injuries to study knee * Patients with history of childhood knee disease * Patients who cannot complete questionnaires in English * Patients with comorbidities preventing surgery * Patients who are not able to provide informed consent
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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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