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Rare congenital anomalies simulating upper cervical spine fractures
1Department of Radiology, Albert Einstein Medical Center, Philadelphia, Pennsylvania 19128.
The Journal of Emergency Medicine
|September 1, 1991
Summary
Congenital cervical spine anomalies, particularly of the atlas (C1), are rare. Two cases highlight how unfused atlas arches can mimic odontoid fractures on X-rays.
Area of Science:
- Orthopedics
- Radiology
- Developmental Biology
Background:
- Congenital anomalies of the cervical spine are uncommon, with atlas (C1) involvement being particularly rare.
- Understanding the developmental anatomy of the atlas and axis is crucial for diagnosing spinal abnormalities.
Observation:
- Two pediatric cases presented with unfused anterior and posterior arches of the atlas (C1).
- Plain film radiographs of these anomalies mimicked unusual odontoid (dens) fractures.
Findings:
- The study details two distinct congenital anomalies of the C1 vertebra: an unfused anterior arch and an unfused posterior arch.
- These unfused segments can radiographically resemble odontoid fractures, posing a diagnostic challenge.
Implications:
- Accurate differentiation between congenital C1 anomalies and odontoid fractures is essential for appropriate patient management.
- This highlights the importance of considering developmental variations in the cervical spine when interpreting radiographic findings.