title: If It Ain't Broke, Don't Fix It.
authors.affiliation: Department of Neurosurgery, University of Mississippi Medical Center, Jackson, Mississippi, USA. Electronic address: lharkey@umc.edu.
authors.forename: Haynes Louis
authors.initials: HL
authors.lastname: Harkey
authors.affiliation: Department of Neurosurgery, University of Mississippi Medical Center, Jackson, Mississippi, USA.
authors.forename: Tamir
authors.initials: T
authors.lastname: Tawfik
keywords: ACDF; Adjacent segment disease; Cervical arthroplasty; Smith Robinson technique