title: Better Axial Stiffness of a Bicortical Screw Construct Compared to a Cable Construct for Comminuted Vancouver B1 Proximal Femoral Fractures.
abstract: The aim of this study was to biomechanically evaluate the Locking attachment plate (LAP) construct in comparison to a Cable plate construct, for the fixation of periprosthetic femoral fractures after cemented total hip arthroplasty. Each construct incorporated a locking compression plate with bi-cortical locking screws for distal fixation. In the Cable construct, 2 cables and 2 uni-cortical locking screws were used for proximal fixation. In the LAP construct, the cables were replaced by a LAP with 4 bi-cortical locking screws. The LAP construct was significantly stiffer than the cable construct under axial load with a bone gap (P=0.01). The LAP construct offers better axial stiffness compared to the cable construct in the fixation of comminuted Vancouver B1 proximal femoral fractures.
authors.affiliation: Fremantle Hospital, Fremantle, Western Australia.
authors.forename: Jamie T
authors.initials: JT
authors.lastname: Griffiths
authors.affiliation: Fremantle Hospital, Fremantle, Western Australia.
authors.forename: Arash
authors.initials: A
authors.lastname: Taheri
authors.affiliation: Medical Engineering and Physics Department, Royal Perth Hospital, Perth, Western Australia, Australia.
authors.forename: Robert E
authors.initials: RE
authors.lastname: Day
authors.affiliation: Fremantle Hospital, Fremantle, Western Australia.
authors.forename: Piers J
authors.initials: PJ
authors.lastname: Yates
mesh_terms: D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects* / Q000379:methods; D001696:Biomechanical Phenomena; D001860:Bone Plates; D001863:Bone Screws; D001864:Bone Wires; D005264:Femoral Fractures / Q000209:etiology / Q000503:physiopathology / Q000601:surgery*; D005269:Femur / Q000293:injuries / Q000601:surgery; D005593:Fracture Fixation, Internal / Q000295:instrumentation*; D018460:Fractures, Comminuted / Q000209:etiology / Q000503:physiopathology / Q000601:surgery*; D006801:Humans; D008953:Models, Anatomic; D057068:Periprosthetic Fractures / Q000209:etiology / Q000503:physiopathology / Q000601:surgery; D011897:Random Allocation
keywords: cables; locking attachment plate; periprosthetic fracture; stiffness; vancouver B1