Clin Orthop Surg.  2009 Jun;1(2):118-121. 10.4055/cios.2009.1.2.118.

Fracture of a Polyethylene Tibial Post in a Scorpio Posterior-Stabilized Knee Prosthesis

Affiliations
  • 1Department of Orthopedic Surgery, Korea University College of Medicine, Guro Hospital, Seoul, Korea. osman@korea.ac.kr

Abstract

We report the case of a polyethylene tibial post fracture in a 72-year-old woman 14 months after a Scorpio posterior-stabilized (PS) total knee arthroplasty. The polyethylene wear was found around the fracture site of the post, especially over the anterior aspect of the post base. The failure mechanism of the post fracture in the present case was anterior impingement with excessive wear over the base of the anterior aspect of the tibial post, which became a stress-riser of post and cam articulation. This is the first report of a polyethylene tibial post fracture of a Scorpio PS prosthesis.

Keyword

Total knee arthroplasty; Posterior-stabilized; Anterior impingement; Polyethylene wear; Post fracture
Full Text Links
  • CIOS
Actions
Cited
CITED
export Copy
Close
Share
  • Twitter
  • Facebook
Similar articles
Copyright © 2021 by Korean Association of Medical Journal Editors. All rights reserved.     E-mail: koreamed@kamje.or.kr