Author Response to Letter to Editor: "Degenerative disc disease and isthmic spondylolisthesis have similar outcomes after L5-S1 anterior lumbar interbody fusion". - Basques BA; Gandhi SD; Rudisill SS; Sadh P; Perez-Albela A; Phillips FM (Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia, 2025)