Volume : 7, Issue : 4, April - 2018

evaluation of result of Proximal Femoral nail antirotation in respect of helical blade position in femoral head in dry femoral bones

Dr Anant Kumar Garg

Abstract :

<p class="MsoNormal" style="line-height:200%"><span style="font-size:12.0pt;&#10;line-height:200%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">The purpose of this <span style="mso-spacerun:yes">&nbsp;</span>study was <span style="color:black">to investigate the biomechanically stability of this device in relation to two common position of helical blade in femoral head in unstable trochanteric </span>fractures.<b style="mso-bidi-font-weight:normal"> </b>In human femurs <span style="mso-spacerun:yes">&nbsp;</span>bone <span style="color:black">helical blade of PFNA fixed randomly <span style="mso-spacerun:yes">&nbsp;</span>in central position both in anteroposterior and lateral view in one group(C-C group)</span> while the other group was fixed <span style="color:black">in inferior one third <span style="mso-spacerun:yes">&nbsp;&nbsp;</span>position in antero-posterior and central in lateral view ( I-C group)</span>. Unstable intertrochenteric fracture was created and after fixation with PFNA <o:p></o:p></span></p> <p class="MsoNormal" align="left" style="text-align:left;line-height:200%;&#10;mso-pagination:widow-orphan;mso-layout-grid-align:none;word-eak:normal"><span style="font-size:12.0pt;line-height:200%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;;&#10;color:black;mso-font-kerning:0pt">The position of helical blade is statistically different between groups. Angular and rotational displacements were significantly higher within the C-C group on compared to I-C group in both unloaded and loaded condition .</span><span style="font-size:12.0pt;line-height:&#10;200%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;;mso-font-kerning:0pt">Loading to failure were higher in the <span style="color:black">I-C group </span>compared to the <span style="color:black">C-C group</span>. No statistical significance was found for this parameter. Correlations between TAD, femoral head displacement and load to failure showed a significant positive relationship.<o:p></o:p></span></p> <p class="MsoNormal" align="left" style="text-align:left;line-height:200%;&#10;mso-pagination:widow-orphan;mso-layout-grid-align:none;word-eak:normal"><span style="font-size:12.0pt;line-height:200%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">The I</span><span style="font-size:12.0pt;line-height:200%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;;&#10;color:black;mso-font-kerning:0pt">-C group superior </span><span style="font-size:12.0pt;line-height:200%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;;&#10;mso-fareast-font-family:Gulim;color:black;mso-font-kerning:0pt">to </span><span style="font-size:12.0pt;line-height:200%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;;&#10;color:black;mso-font-kerning:0pt">C-C group</span><span style="font-size:12.0pt;&#10;line-height:200%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&#10;Gulim;color:black;mso-font-kerning:0pt"> and provide better biomechanical stability for angular and rotational displacement.</span><span style="font-size:12.0pt;line-height:200%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;"><span style="mso-spacerun:yes">&nbsp; </span>.<span style="color:black"><o:p></o:p></span></span></p>