Volume : 7, Issue : 2, February - 2018

Shape Of Suprascapular Notch in Human Scapulae: An Osteological Study

Sangeetha V, Divya Shanthi D 8216 Sa

Abstract :

<p>&nbsp;</p> <p class="MsoNormal" style="text-align:justify;line-height:200%"><b style="mso-bidi-font-weight:normal"><span style="font-size:12.0pt;mso-bidi-font-size:&#10;11.0pt;line-height:200%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Introduction:</span></b><span style="font-size:12.0pt;mso-bidi-font-size:11.0pt;line-height:200%;font-family:&#10;&quot;Times New Roman&quot;,&quot;serif&quot;"> The suprascapular notch is a depression on the superior border of scapula which gives passage to the suprascapular nerve to enter the supraspinatus fossa. The suprascapular nerve after arising from the upper trunk of achial plexus, passes through the suprascapular notch and then through the spinoglenoid notch and supplies the supraspinatus and the infraspinatus muscles. The presence of anatomical variations in the shape of the suprascapular notch, may lead to compression of the suprascapular nerve resulting in suprascapular nerve entrapment syndrome. <o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify;line-height:200%"><b style="mso-bidi-font-weight:normal"><span style="font-size:12.0pt;mso-bidi-font-size:&#10;11.0pt;line-height:200%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Aim:</span></b><span style="font-size:12.0pt;mso-bidi-font-size:11.0pt;line-height:200%;font-family:&#10;&quot;Times New Roman&quot;,&quot;serif&quot;"> The purpose of the study was to determine the variations of the shape of suprascapular notch of scapula. <o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify;line-height:200%"><b style="mso-bidi-font-weight:normal"><span style="font-size:12.0pt;mso-bidi-font-size:&#10;11.0pt;line-height:200%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Materials and Methods:</span></b><span style="font-size:12.0pt;mso-bidi-font-size:11.0pt;&#10;line-height:200%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;"> The study was conducted in the department of Anatomy, Subbaiah Institute of Medical Sciences. A total 138 dried human scapulae of both sides available in the bone liary were grossly examined for variations in shape of the notches. <o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify;line-height:200%"><b style="mso-bidi-font-weight:normal"><span style="font-size:12.0pt;mso-bidi-font-size:&#10;11.0pt;line-height:200%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Results: </span></b><span style="font-size:12.0pt;mso-bidi-font-size:11.0pt;line-height:200%;font-family:&#10;&quot;Times New Roman&quot;,&quot;serif&quot;">The results of our study obeyed Rengachary et.al. classification. The frequencies of various type of suprascapular notch were Type I (28.25%) , Type II (23.19%), Type III (31.16%), Type IV (7.9%), Type V (5.79%) and Type VI (3.62%).<span style="mso-spacerun:yes">&nbsp; </span><o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify;line-height:200%"><b style="mso-bidi-font-weight:normal"><span style="font-size:12.0pt;mso-bidi-font-size:&#10;11.0pt;line-height:200%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Conclusion: </span></b><span style="font-size:12.0pt;mso-bidi-font-size:11.0pt;line-height:200%;font-family:&#10;&quot;Times New Roman&quot;,&quot;serif&quot;">The anatomical variations in the shape of suprascapular notch are common in population. Hence the clinicians need to have precise anatomical knowledge of SSN to make proper diagnosis and plan for surgical interventions like arthroscopic shoulder procedures for suprascapular nerve entrapment syndrome. <o:p></o:p></span></p>