The SLIP study was published in 2016 and compared laminectomy alone with laminectomy plus fusion in patients with Spondylolisthesis[^1].
Interpretation by the Study Authors
Among patients with degenerative grade I spondylolisthesis, the addition of lumbar spinal fusion to laminectomy was associated with slightly greater but clinically meaningful improvement in overall physical health–related quality of life than laminectomy alone.[^1]