A Biomechanical Comparison of Two Intramedullary Implants for Subtrochanteric Fracture in Two Healing Stages: A Finite Element Analysis

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td align="left">Healing stage</td><td align="center">Implant</td><td align="center">Blade/hip screw</td><td align="center">Main intramedullary nail</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td align="left" rowspan="2">Soft callus</td><td align="center">PFNA-II</td><td align="center">243.7</td><td align="center">389.9</td></tr><tr><td align="center">A2FN</td><td align="center">66.9</td><td align="center">309.7</td></tr><tr><td align="center" colspan="4"><hr/></td></tr><tr><td align="left" rowspan="2">Hard callus</td><td align="center">PFNA-II</td><td align="center">243.6</td><td align="center">308.5</td></tr><tr><td align="center">A2FN</td><td align="center">64.0</td><td align="center">142.0</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

The peak von Mises stress of the implant configurations in two healing stages (MPa).

Applied Bionics and Biomechanics

tab2

Table 2

Table 2: A Biomechanical Comparison of Two Intramedullary Implants for Subtrochanteric Fracture in Two Healing Stages: A Finite Element Analysis 