Fig. 1From: Unilateral biportal endoscopic lumbar interbody fusion (ULIF) versus endoscopic transforaminal lumbar interbody fusion (Endo-TLIF) in the treatment of lumbar spinal stenosis along with intervertebral disc herniation: a retrospective analysisPre-operative DR front-lateral and hyperflexion-hyperextension images of a patient in the ULIF groupBack to article page