title: The number of locking screws predicts the risk of nonunion and reintervention in periprosthetic total knee arthroplasty fractures treated with a nail.
abstract: Periprosthetic knee fractures following total knee arthroplasty are increasing proportionally to the number of primary procedures done. We performed a retrospective review of Rorabeck type II fractures treated with a retrograde nail, trying to find the relationship between failure and the number of distal locking screws used. Twenty-six patients were included. The number of distal interlocking screws (patients with one or two distal interlocking screws and patients with three screws) correlated with nonunion (p < 0.1), did not correlate with the malunion rate (p > 0.1) and correlated with the reintervention rate (p < 0.1).
authors.affiliation: Hospital 12 de Octubre, Avda. Córdoba s/n, Madrid, Spain.
authors.forename: Ainhoa
authors.initials: A
authors.lastname: Toro-Ibarguen
authors.forename: José-Antonio
authors.initials: JA
authors.lastname: Moreno-Beamud
authors.forename: Miguel-Ángel
authors.initials: MÁ
authors.lastname: Porras-Moreno
authors.forename: Miguel
authors.initials: M
authors.lastname: Aroca-Peinado
authors.forename: José-Luis
authors.initials: JL
authors.lastname: León-Baltasar
authors.forename: Alberto-Agustín
authors.initials: AA
authors.lastname: Jorge-Mora
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee / Q000295:instrumentation* / Q000379:methods; D001858:Bone Nails / Q000009:adverse effects*; D001863:Bone Screws / Q000009:adverse effects*; D005260:Female; D005594:Fracture Fixation, Intramedullary / Q000295:instrumentation / Q000379:methods; D005599:Fractures, Ununited / Q000209:etiology*; D006801:Humans; D007720:Knee Prosthesis; D008297:Male; D008875:Middle Aged; D057068:Periprosthetic Fractures / Q000601:surgery*; D011475:Prosthesis Failure / Q000209:etiology; D016459:Prosthesis-Related Infections / Q000209:etiology; D012086:Reoperation; D012189:Retrospective Studies; D012307:Risk Factors