Epidural lysis of adhesions Epidural lysis of adhesions. A: Contrast injection revealing right-sided adhesions above the S1 nerve root represented by the filling defect. B: Contrast injection post–epidural lysis demonstrating elimination of adhesions with contrast flowing along the L4 and L5 nerve roots. L4, L4 vertebra; L5, L5 vertebra; S1, S1 vertebra. Source: Interventional Pain Management, CURRENT Diagnosis & Treatment: Physical Medicine & Rehabilitation Citation: Maitin IB, Cruz E. CURRENT Diagnosis & Treatment: Physical Medicine & Rehabilitation; 2015 Available at: http://accessmedicine.mhmedical.com/DownloadImage.aspx?image=/data/Books/1180/mai_ch21_f008b.png&sec=70379716&BookID=1180&ChapterSecID=70379624&imagename= Accessed: October 11, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved