Which knee implant stays put longer? a Head-to-Head test
NCT ID NCT05651009
First seen Aug 17, 2026 · Last updated Aug 17, 2026
Summary
This trial aims to see if there is a difference in how well two cementless total knee replacement implants hold up over time. About 50 people with knee osteoarthritis will be randomly assigned to receive either the Triathlon Tritanium or the GMK Sphere implant. Using CT scans, researchers will measure tiny movements of the implant, which may indicate how long it will last. The goal is to find out which design offers better long-term stability.
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 (TKA) with two different cementless implant designs: Triathlon Tritanium (Stryker) and GMK Sphere (Medacta)
- What this could lead to
- If one implant proves more stable, it could point toward a longer-lasting knee replacement option, potentially reducing the need for revision surgery.
- What could go wrong
- This is a small, early-stage trial, so results may not apply to all patients. Implant stability does not guarantee long-term success, and surgery carries standard risks like infection or implant loosening.
This is an AI summary of the original study and may miss details. Read our disclaimer.
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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.
Contacts and locations
Locations
-
Kristiansund Hospital, Møre and Romsdal Hospital Trust
Kristiansund, Møre and Romsdal, 6508, Norway
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Other studies related to the condition(s) this trial covers.
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