title: Traumatic Dislodgement of Tibial Polyethylene Insert after a High-Flex Posterior-Stabilized Total Knee Replacement.
abstract: Many pathologic entities can produce a painful total knee replacement (TKR) that may lead to potential prosthetic failure. Polyethylene insert dissociation from the tibial baseplate has been described most frequently after mobile-bearing and cruciate-retaining TKRs. However, only 3 tibial insert dislocations in primary fixed-bearing High-Flex posterior-stabilized TKRs have been reported. We present a new case of tibial insert dislocation in a High-Flex model that shares similarities and differences with the cases reported, facilitating the analysis of the potential causes, which still remain undefined.
authors.affiliation: The Knee Surgery Unit, Institute of Orthopaedics "Carlos E. Ottolenghi", Italian Hospital of Buenos Aires, Potosí 4247, C1199ACK Buenos Aires, Argentina.
authors.forename: Juan Felix
authors.initials: JF
authors.lastname: Astoul Bonorino
authors.affiliation: The Knee Surgery Unit, Institute of Orthopaedics "Carlos E. Ottolenghi", Italian Hospital of Buenos Aires, Potosí 4247, C1199ACK Buenos Aires, Argentina.
authors.forename: Pablo Ariel Isidoro
authors.initials: PA
authors.lastname: Slullitel
authors.affiliation: The Knee Surgery Unit, Institute of Orthopaedics "Carlos E. Ottolenghi", Italian Hospital of Buenos Aires, Potosí 4247, C1199ACK Buenos Aires, Argentina.
authors.forename: Gonzalo Rodrigo
authors.initials: GR
authors.lastname: Kido
authors.affiliation: The Knee Surgery Unit, Institute of Orthopaedics "Carlos E. Ottolenghi", Italian Hospital of Buenos Aires, Potosí 4247, C1199ACK Buenos Aires, Argentina.
authors.forename: Santiago
authors.initials: S
authors.lastname: Bongiovanni
authors.affiliation: The Knee Surgery Unit, Institute of Orthopaedics "Carlos E. Ottolenghi", Italian Hospital of Buenos Aires, Potosí 4247, C1199ACK Buenos Aires, Argentina.
authors.forename: Renato
authors.initials: R
authors.lastname: Vestri
authors.affiliation: The Knee Surgery Unit, Institute of Orthopaedics "Carlos E. Ottolenghi", Italian Hospital of Buenos Aires, Potosí 4247, C1199ACK Buenos Aires, Argentina.
authors.forename: Lisandro
authors.initials: L
authors.lastname: Carbó