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Pre Operative radiologic evaluation.
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The white square was the insertion point of PELD and Foraminotomy, the distance (cm) measured from the midline to this point was equal to the distance between skin and anterior margin of vertebral body at the same level.
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Prepping and draping was performed in the operating field, after several levelling using K-wire and fluoroscopy, we defined the insertion point on the right side of the patient, 7 cm lateral to the midline at the level of L5-S1 disc space (Fig. 2).
Intra Operative device placement.
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The technical success of the foraminotomy procedure was determined by the visualization of the exiting and traversing nerve root and visualizing the ball-probed dilator passing freely under the nerve and over the inferior pedicle (Fig. 3, Fig. 4).
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Post Operative radiographic evaluation.
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