Complete 180° rotatory dislocation in a mobile-bearing knee prothesis

The Journal of Arthroplasty
Hussein W Turki, Lorence Trick

Abstract

Dislocation of the rotator platform in mobile-bearing total knee arthroplasty is a well-documented, albeit uncommon, phenomenon. A review of the literature has revealed multiple case reports describing spin out to 90° or complete extrusion of the polyethylene component. Closed reduction may be attempted in the acute presentation followed by revision if instability persists. We present a case of a 57-year-old woman who had a partial rotatory subluxation of her polyethylene component and underwent closed reduction resulting in a full 180° spinout. To our knowledge, this has not been described in the literature and should be considered as a possibility after closed reduction attempts. She was treated successfully with open exploration and poly exchange using a larger component.

References

Jul 31, 1999·The Journal of Arthroplasty·J H LonnerR D Scott
Oct 6, 2005·The Journal of Bone and Joint Surgery. American Volume·S BhanMahesh Bijjawara
Sep 8, 2006·The Knee·Masahiro HasegawaAtsumasa Uchida
Sep 3, 2009·The Journal of Bone and Joint Surgery. American Volume·Terence J GioeJasvinder Singh

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Citations

Jan 15, 2013·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Robert D RussellRichard E Jones
May 9, 2013·The International Journal of Artificial Organs·Alessandra SudaneseSaverio Affatato
Oct 23, 2019·Case Reports in Orthopedics·Stephen SierraGeorge Brindley
Jun 17, 2020·The Journal of Bone and Joint Surgery. American Volume·Nicole Durig QuinlanVincent D Pellegrini
Oct 8, 2020·The Journal of Bone and Joint Surgery. American Volume·Nicole Durig QuinlanVincent D Pellegrini

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