title: Prevention of excessive medialisation of trochanteric fracture by a buttress screw: a novel method and finite element analysis.
abstract: This paper proposes a novel method of using an antero-posterior buttress screw at the distal fragment just below the fracture site in conjunction with the sliding hip screw (SHS) to resist excessive femoral medialisation. A virtual assessment of the effectiveness of this new method was performed using the finite element analysis. The results indicate that the use ofa sliding hip screw (SHS) combined with a buttress screw can help resistfemoral medialisation better than using an SHS with no buttress screw. The von Mises equivalent stress (EQ ) was found to be in a safe range, which indicates increased integrity of the lateral wall with the addition of the buttress screw.
authors.forename: Banchong
authors.initials: B
authors.lastname: Mahaisavariya
authors.forename: Nattapon
authors.initials: N
authors.lastname: Chantarapanich
authors.forename: Kongkhet
authors.initials: K
authors.lastname: Riansuwan
authors.forename: Kriskrai
authors.initials: K
authors.lastname: Sitthiseripratip
mesh_terms: D001696:Biomechanical Phenomena; D001863:Bone Screws; D002102:Cadaver; D020342:Finite Element Analysis; D005593:Fracture Fixation, Internal / Q000295:instrumentation* / Q000379:methods*; D006620:Hip Fractures / Q000000981:diagnostic imaging* / Q000601:surgery*; D006801:Humans; D021621:Imaging, Three-Dimensional; D013314:Stress, Mechanical; D036542:Tomography, Spiral Computed