title: Instrumented fusion for degenerative spondylolisthesis: is it necessary?
authors.forename: Robert F
authors.initials: RF
authors.lastname: McLain
mesh_terms: D006801:Humans; D018579:Patient Selection; D012306:Risk; D013123:Spinal Fusion / Q000009:adverse effects / Q000191:economics / Q000295:instrumentation*; D013168:Spondylolisthesis / Q000601:surgery*; D016896:Treatment Outcome