The BoneScalpel® is an ultrasonic surgical tool that cuts through bone while sparing soft tissues. (Misonix, Farmingdale, NY). It is a smart, bloodless and precise bone cutting tool. The bone scalpel allows the surgeon to be unusually precise in bone cuts, freeing up one segment, preserving another maintaining stability. So for example nerves may be decompressed and freed while protecting the facet joints, and thereby maintaining stability.