Adjacent segment degeneration

1. Congenital cervical fusion raises the risk of adjacent segment degeneration in humans.

   “Congenital cervical fusion not only accelerates degeneration in adjacent segments but also extends its impact to non-adjacent segments.”

   Humansin Type I Klippel-Feil Syndrome with C5-6 fusioncervical spine

   Does congenital cervical fusion predispose to adjacent segment degeneration? A retrospective cohort study

   BMC musculoskeletal disorders·11 Apr 2026

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