title: Retrograde intramedullary nailing with a blocking pin technique for reduction of periprosthetic supracondylar femoral fracture after total knee arthroplasty: technical note with a compatibility chart of the nail to femoral component.
abstract: Periprosthetic fractures after total knee arthroplasty (TKA) present a clear management challenge, and retrograde intramedullary nails have recently gained widespread acceptance in treatment of these fractures. In two cases, we found a blocking screw technique, first reported by Krettek et al., was useful in the reduction of the fractures. Both patients attained preinjury mobility after intramedullary nailing. Moreover, we present a chart summarizing the notch designs of various femoral components because some prosthetic knee designs are not amenable to retrograde nailing. We hope this will be helpful in determining indications for retrograde nailing in periprosthetic fractures after TKA.
authors.affiliation: Department of Orthopedics, Institute of Health Biosciences, University of Tokushima Graduate School, 3-18-15 Kuramoto, Tokushima 770-8503, Japan.
authors.forename: Ichiro
authors.identifier: 0000-0002-3006-5281
authors.initials: I
authors.lastname: Tonogai
authors.affiliation: Department of Orthopedics, Institute of Health Biosciences, University of Tokushima Graduate School, 3-18-15 Kuramoto, Tokushima 770-8503, Japan.
authors.forename: Daisuke
authors.initials: D
authors.lastname: Hamada
authors.affiliation: Department of Orthopedics, Institute of Health Biosciences, University of Tokushima Graduate School, 3-18-15 Kuramoto, Tokushima 770-8503, Japan.
authors.forename: Tomohiro
authors.identifier: 0000-0002-2060-4157
authors.initials: T
authors.lastname: Goto
authors.affiliation: Department of Orthopedics, Institute of Health Biosciences, University of Tokushima Graduate School, 3-18-15 Kuramoto, Tokushima 770-8503, Japan.
authors.forename: Tomoya
authors.initials: T
authors.lastname: Takasago
authors.affiliation: Department of Orthopedics, Institute of Health Biosciences, University of Tokushima Graduate School, 3-18-15 Kuramoto, Tokushima 770-8503, Japan.
authors.forename: Takahiko
authors.initials: T
authors.lastname: Tsutsui
authors.affiliation: Department of Orthopedics, Institute of Health Biosciences, University of Tokushima Graduate School, 3-18-15 Kuramoto, Tokushima 770-8503, Japan.
authors.forename: Naoto
authors.initials: N
authors.lastname: Suzue
authors.affiliation: Department of Orthopedics, Institute of Health Biosciences, University of Tokushima Graduate School, 3-18-15 Kuramoto, Tokushima 770-8503, Japan.
authors.forename: Tetsuya
authors.identifier: 0000-0002-6360-2995
authors.initials: T
authors.lastname: Matsuura
authors.affiliation: Department of Orthopedics, Institute of Health Biosciences, University of Tokushima Graduate School, 3-18-15 Kuramoto, Tokushima 770-8503, Japan.
authors.forename: Koichi
authors.initials: K
authors.lastname: Sairyo