Case: A 47-year-old male patient presented with progressively worsening gait instability caused by a giant anomalous, free-floating C5 spinous process resulting in dynamic cord compression and myelopathy. The patient was successfully managed with a C5 laminectomy and total excision of the anomalous spinous process with a good functional outcome at the final follow-up.
Conclusion: Anomalies of the posterior arch of the subaxial cervical spine are relatively uncommon and asymptomatic. This case is being reported for its rarity and to highlight the role of dynamic imaging in patients presenting with congenital anomalies of the cervical spine presenting with compressive myelopathy.
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