• Abdullah Merter, Oguz Karaeminogullari, and Motohide Shibayama.
• Department of Orthopedics, Spine Section, School of Medicine, Ibn-i Sina Hospital, Ankara University, Ankara, Turkey. Electronic address: dr.merter@gmail.com.
• World Neurosurg. 2020 Jul 1; 139: e572-e579.

BackgroundLumbar disk herniation can be successfully treated by lumbar endoscopic spinal procedures. However, one of the most important disadvantages of the endoscopic methods used is radiation exposure. There are multiple endoscopic spinal procedures and this study aims to compare unilateral biportal endoscopic diskectomy (UBED), percutaneous endoscopic lumbar diskectomy (PELD), and microendoscopic diskectomy (MED) methods in terms of radiation exposure.MethodsA total of 75 people were included in this prospective and multicenter study. The demographic characteristics, operating times (minutes), levels of surgery, lumbar disk herniation types, radiation exposures (dose area product [DAP]), and fluoroscopy times (seconds) of the groups were compared.ResultsMean DAP values were 1.39 Gy·cm2 in the UBED group, 2.46 Gy·cm2 in the PELD group, and 1.01 Gy·cm2 in the MED group. The UBED group had no statistically significant difference with the MED and PELD groups in terms of DAP (P = 0.281 and P = 0.058, respectively), whereas the PELD group had statistically significantly higher DAP values than the MED group (P = 0.016). The maximum mean duration of fluoroscopy usage time was 34.9 seconds in the PELD group, 19.3 seconds in the UBED group, and 4.6 seconds in the MED group. The differences between the groups were significant (P ≤ 0.001).ConclusionsThe more the level of invasiveness is reduced in spinal surgery, the greater the exposure to radiation. In this study, the groups are listed as PELD > UBED > MED according to the duration and level of radiation exposure.Copyright © 2020 Elsevier Inc. All rights reserved.

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