LAUSR

Background There is debate regarding criteria to select patients for lumbar fusion surgery who have chronic low back pain (CLBP) and corresponding degenerative changes, but without nerve root compression or neurogenic claudication. The aim of this study was to compare patterns in current practice. Method A total of 143 printed questionnaires containing 51 questions were distributed at the German Spine Societies' (DWG) annual congress, 6–8 December 2018. Results We received 127 (89%) surveys (64 orthopedic surgeons and 63 neurosurgeons). Excluding the 22% who do not perform lumbar fusion for CLBP, 41.4% reported performing 1–10 lumbar fusion procedures for patients with CLBP per year, 20.2% reported 11–20, 10.1% reported 21–30 and 17.2% reported performing more than 50. A total of 44.9% of surgeons reported treating patients for at least 6–12 months conservatively before considering surgery; 65.6% considered postoperative pain reduction of 50–70% a treatment success; 32.6% of respondents believe that <50% of patients showed good outcomes after fusion in CLBP and only 15.5% believed that 70% or more showed good outcomes. Orthopedic surgeons perform more lumbar fusion surgeries than neurosurgeons (p = 0.05), fuse more lumbar segments than neurosurgeons (p = 0.02) and are more likely to suggest that their patients with CLBP cease smoking preoperatively (p = 0.02). Conclusions Despite discouraging evidence in the literature, the majority of respondents still perform fusion surgery in patients with CLBP. The use of preoperative diagnostics and tests vary widely among spine surgeons.