Schar RT, et al. - In this retrospective single-center cohort study, investigators examined the impact of preoperative radiographic parameters on reoperation rates after microsurgical laminotomy for lumbar spinal stenosis (LSS) among 161 candidates between January 2012 and September 2013. They recorded 3.1% of cases who required secondary fusion. They noticed 34.8% of cases with low-grade spondylolisthesis involving 60 surgical index levels (SILs) whereas 14.9% underwent reoperation including 32 levels. They found decompression alone, feasible for most subjects with LSS and stable low-grade spondylolisthesis.