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Bone ingrowth into porous-coated tibial components implanted with autograft bone chips

The Journal of Arthroplasty, ISSN: 0883-5403, Vol: 7, Issue: 4, Page: 483-493
1992
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Metric Options:   Counts1 Year3 Year

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Article Description

Ten asymmetric porous-coated tibial knee components were consecutively retrieved from nine patients with implantation times ranging from 1 week to 48 months. Morselized autograft bone chips were applied to the resected surface of the tibia prior to component implantation. Microradiographic analysis showed bone in contact with 64±10% of the porous-coated interface. Backscattered electron imaging of the bone-implant interface revealed bone within 8–22% of the porous coating. Although bone in the form of autograft bone chips was observed in the porous coating of the 1 and 3 week specimens, it was not connected to the host bone. By 3 and 6 months, the bone chips were integrated and connected to the host bone providing osseous continuity from the porous coating to the skeleton. This study shows that reproducible bone ingrowth into porous-coated tibial components is achievable using autograft bone chips to promote bone fixation

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