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  • Title: Prevention of excessive medialisation of trochanteric fracture by a buttress screw: a novel method and finite element analysis.
    Author: Mahaisavariya B, Chantarapanich N, Riansuwan K, Sitthiseripratip K.
    Journal: J Med Assoc Thai; 2014 Sep; 97 Suppl 9():S127-32. PubMed ID: 25365905.
    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.
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