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Updated: May 5, 2026

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Published on: July 25, 2025
Cervical Disk Arthroplasty Failure in a Patient with Klippel-Feil Syndrome: A Case Report
Phillip Alexeev1, Ryan Snowden2
1Thomas F. Frist, Jr. College of Medicine, Belmont University, Nashville, Tennessee.
Case:
A 26-year-old female with Klippel-Feil syndrome (KFS) type III underwent cervical disk arthroplasty (CDA) at C5-6 for radiculopathy unresponsive to conservative care. Initial improvement was followed by recurrence of symptoms despite no implant failure or adjacent segment disease. At 11 months, she underwent revision to anterior cervical diskectomy and fusion (ACDF), resulting in full symptom resolution.
Conclusion:
This case illustrates early CDA failure in a patient with congenital cervical fusion, successfully revised to ACDF. It highlights the uncertain outcomes of motion-preserving surgery in KFS and underscores the need for caution and further research in this population.
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