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Uncemented tantalum monoblock tibial fixation yielded satisfactory outcomes at 10 years
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Results published in The Journal of Bone and Joint Surgery showed use of uncemented porous tantalum monoblock tibial components in patients younger than 60 years of age yielded reliable fixation, excellent radiographic findings and satisfactory functional outcomes at a mean of 10 years after total knee arthroplasty.
During an average follow-up of 10 years, researchers recorded Knee Society Score, radiograph findings and any complications or revisions among 79 patients who were younger than 60 years at the time of TKA. Surgery was performed with an uncemented, posterior-stabilized femoral component and a porous tantalum monoblock tibial component (NexGen, Zimmer).
Results showed no progressive radiolucencies on radiographic view in 76% of 79 patients available for evaluation at the latest follow-up. Researchers found patients had a mean functional Knee Society Score of 68 points. Patients had an all-cause revision rate of 6%, according to results, and all revisions were unrelated to tibial fixation, including femoral component loosening, stiffness, pain and swelling, and instability.
“While our results add to the evidence supporting the use of uncemented porous metal tibial components in TKA, further research and long-term reports are clearly necessary,” the authors wrote. “The long-term excellent clinical success of cemented tibial fixation must be matched in clinical series of uncemented tibial fixation prior to its routine adoption.” – by Casey Tingle
Disclosures: DeFrancesco reports no relevant financial disclosures. Please see the full study for a list of all other authors’ relevant financial disclosures.
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