Hydroxyapatite augmentation of the porous coating improves fixation of tibial components. A randomised RSA study in 116 patients

Ingemar Önsten, A Nordqvist, Åke Carlsson, Jack Besjakov, S Shott

Research output: Contribution to journalArticlepeer-review

Abstract

In a single-blind, randomised series of knee replacements in 116 patients, we used radiostereometric analysis (RSA) to measure micromotion in three types of tibial implant fixation for two years after knee replacement. We compared hydroxyapatite-augmented porous coating, porous coating, and cemented fixation of the same design of tibial component. At one to two years, porous-coated implants migrated at a statistically significantly higher rate than hydroxyapatite-augmented or cemented implants. There was no significant difference between hydroxyapatite-coated and cemented implants. We conclude that hydroxyapatite augmentation may offer a clinically relevant advantage over a simple porous coating for tibial component fixation, but is no better than cemented fixation.
Original languageEnglish
Pages (from-to)417-425
JournalJournal of Bone and Joint Surgery: British Volume
Volume80-B
Issue number3
Publication statusPublished - 1998

Bibliographical note

The information about affiliations in this record was updated in December 2015.
The record was previously connected to the following departments: Medical Radiology Unit (013241410), Reconstructive Surgery (013240300)

Subject classification (UKÄ)

  • Surgery
  • Radiology, Nuclear Medicine and Medical Imaging

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