Abstract

Cross-sectional survey. Surgical treatment of degenerative lumbar spondylolisthesis is remarkably varied due to heterogeneity of clinical-radiological presentations. This study aimed to assess which spinopelvic radiological parameters were considered for decision-making. Survey distributed to International AO Spine members to analyze surgeons' considerations for treatment. Data collected includes demographics, training background, years of experience, and treatment decisions based on various radiographical findings, including segmental and global spinopelvic parameters. From 479 responses, the most frequently radiological parameter considered was slippage on dynamic X-rays (79.1%), followed by disc height (78.9%), global sagittal balance SVA (71.4%), and PI-LL mismatch (69.7%), while the least important was absolute spondylolisthesis on static lateral radiograph (22.8%). Fellowship-trained surgeons were likelier to use SVA (OR = 1.73, 95% CI = 1.02-2.99, P = 0.049), and disc height (2.13, 1.14-3.98, P < 0.05). There was no difference between orthopedics and neurosurgery in applying SVA and PI-LL mismatch. Surgeons from Asia Pacific emphasizes segmental lordosis (2.39, 1.11-5.15, P = 0.026) as from Latin America (2.55, 1.09-5.95, P = 0.030) and Middle East (4.33, 1.66-11.28, P = 0.003). However, surgeons from Latin America and Middle East also significant consider disc height (2.95, 1.07-8.15, P = 0.037) and (3.03, 1.04-8.83, P = 0.043), respectively. Additionally, the surgeons' age was associated with using angular motion on flexion-extension radiographs, and volume of treated cases yearly with consideration for disc height. Treatment of degenerative lumbar spondylolisthesis was influenced by slippage on dynamic radiographs, disc height, global alignment, and PI-LL mismatch. Surgeons' age and Region, fellowship-trained, and volume of treated cases were significantly associated to apply these radiological parameters.

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