Comparison of unilateral biportal endoscopic lumbar interbody fusion (UBE-LIF) and conventional open TLIF in degenerative lumbar spine disease: a radiological, clinical, and laboratory study

Abstract Background Parallel to the advancement of endoscopic techniques, unilateral biportal endoscopic lumbar interbody fusion (UBE-LIF) has become a popular surgical method in the treatment of degenerative lumbar instability. This study aimed to compare the clinical and radiological outcomes of UBE-LIF and conventional open TLIF techniques. Methods Patients with single-level degenerative lumbar spondylolisthesis who underwent either UBE-LIF or conventional open TLIF at our institution between