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Promising results seen with all-polyethylene tibial components used in TKA for older patients
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Results from this study demonstrated all-polyethylene tibial components for total knee arthroplasty in the older patients yielded “excellent” results, with significant cost savings.
Researchers retrospectively reviewed 317 TKAs out of 3,627 TKAs performed by the senior author. A minimum 2-year follow-up was conducted of 227 knees performed with the Zimmer Natural knee system (Zimmer Orthopedics). The system comprised of an all-polyethylene tibial component with a central cruciate-shaped stem. Average patient age was 80.8 years at the time of surgery, with an average 5.6-year follow-up.
At the last follow-up, the average Knee Society score was 94.2 and the average functional score was 57.2. Investigators noted the average postoperative range of motion was 1.6° to 115.4°. Revision for aseptic loosening, septic loosening, wear or instability was not required by any patient. There were five knees with partial non-progressive, cement/bone radiolucency. When the all-polyethylene component was used, investigators saw a 33% cost savings for implants. – by Monica Jaramillo
Disclosure: Gustke reports he is on the editorial or governing board for Journal of Arthroplasty; receives royalties and research support from and has stock options in Orthosensor; is a paid consultant and paid presenter or speaker for Orthosenor; receives intellectual property royalties from, a paid consultant or paid presenter or speaker for and receives research support from Stryker MAKO; is a paid consultant and paid presenter or speaker for, receives research support from and has stock or stock options in Zimmer.
Editor’s Note: On Oct. 9, 2017, Healio.com/Orthopedics updated the article to reflect the minimum time of follow-up, as well as the total number of patients.
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