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The Bone & Joint Journal

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The Bone & Joint Journal
Vol. 103-B, Issue 5 | Pages 855 - 863
1 May 2021
Koster LA Meinardi JE Kaptein BL Van der Linden - Van der Zwaag E Nelissen RGHH

Aims

The objective of this study was to compare the two-year migration pattern and clinical outcomes of a total knee arthroplasty (TKA) with an asymmetrical tibial design (Persona PS) and a well-proven TKA with a symmetrical tibial design (NexGen LPS).

Methods

A randomized controlled radiostereometric analysis (RSA) trial was conducted including 75 cemented posterior-stabilized TKAs. Implant migration was measured with RSA. Maximum total point motion (MTPM), translations, rotations, clinical outcomes, and patient-reported outcome measures (PROMs) were assessed at one week postoperatively and at three, six, 12, and 24 months postoperatively.