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A comparison between cemented, press-fit, and HA-coated interfaces in Kinemax total knee replacement

Lookup NU author(s): Ian Pinder


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There are possible advantages of using uncemented fixation in total knee replacement. In this prospective randomised multi-centre study, a comparison was made between cemented and two types of uncemented fixation for the Kinemax design. There were 12-14 cases in each group. Beads were inserted in the bones from which component migration was measured at lime intervals up to 2 years. The axial migrations were significantly less for cemented and HA-coating, compared with press-fit, at all time intervals. The clinical data showed no differences at 2 years except for more cases of pain in the uncemented groups. Radiographically, the cemented interfaces showed the least change, press-fit showed a radiolucent line and a radiodense line, and HA showed a diffuse radiodensity adjacent to the components. It was concluded that for the Kinemax design of tibial component, press-fit was inferior to cemented, but that there was the potential for designing a special component for uncemented fixation for which HA-coating would be an advantage. (C) 2000 Elsevier Science B.V. All rights reserved.

Publication metadata

Author(s): Walker PS, Sathasivam S, Cobb A, Learmonth ID, Grobler GP, Pinder IM, Marchetti N, Spinelli MD, Welsby A

Publication type: Article

Publication status: Published

Journal: Knee

Year: 2000

Volume: 7

Issue: 2

Pages: 71-78

ISSN (print): 0968-0160

ISSN (electronic): 1873-5800

Publisher: Elsevier


DOI: 10.1016/S0968-0160(99)00041-1


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