Fracture of Two Moderately Cross-Linked Polyethylene Tibial Inserts in a TKR Patient

Author:

Teeter Matthew G.1,McAuley James P.1,Naudie Douglas D.1

Affiliation:

1. Division of Orthopaedic Surgery, London Health Sciences Centre-University Hospital, 339 Windermere Road London, ON, Canada N6A 5A5

Abstract

Highly cross-linked polyethylene has become the gold standard in total hip replacement for its wear resistance. Moderately crosslinked polyethylene is now available for total knee replacement (TKR), although concerns about reduced mechanical strength have prevented widespread adoption. The purpose of this report is to describe an unusual case where a patient underwent cruciate retaining TKR using a moderately crosslinked polyethylene tibial insert that went on to fracture twice in the same location across the primary and first revision surgery. The first tibial insert was 10 mm thick and was implanted for 16 months. The second tibial insert was 15 mm thick and was implanted for 11 months. Both fractured along the posterior aspect of the medial articular surface. The lack of a specific event leading to these fractures and the fact that they occurred twice in the same location in the same patient suggest that caution is still necessary regarding the introduction of crosslinked polyethylene for TKR surgery.

Publisher

Hindawi Limited

Subject

General Earth and Planetary Sciences,General Environmental Science

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Polyethylene in total knee arthroplasty: Where are we now?;Journal of Orthopaedic Surgery;2018-09-01

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