Effect of Age and Lordotic Angle on the Level of Lumbar Disc Herniation

<table>Measurement of lumbar lordotic angle <svg height="7.1750002" id="M11" style="vertical-align:-0.1254pt" version="1.1" viewbox="0 0 8.9375 7.1750002" width="8.9375" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,7.175)">
<g transform="translate(72,-66.26)">
<text transform="matrix(1,0,0,-1,-71.95,66.44)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝛼</tspan>
</text>
</g>
</g>
</svg>. Using Cobb’s method, tangent lines are drawn along the superior end pated of L1 and S1. Perpendiculars to each of the lines are added to form <svg height="7.1750002" id="M12" style="vertical-align:-0.1254pt" version="1.1" viewbox="0 0 8.9375 7.1750002" width="8.9375" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,7.175)">
<g transform="translate(72,-66.26)">
<text transform="matrix(1,0,0,-1,-71.95,66.44)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝛼</tspan>
</text>
</g>
</g>
</svg>.</table>

Advances in Orthopedics

fig1

Figure 1

Figure 1: Effect of Age and Lordotic Angle on the Level of Lumbar Disc Herniation 