J Korean Neurosurg Soc.
1994 Jun;23(6):664-668.
Radiologic Findings of Lumbar Apophyseal Ring Fracture
- Affiliations
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- 1Department of Diagnostic Radiology, Yonsei University, College of Medicine, Seoul, Korea.
- 2Department of Neurosurgery, Yonsei University, College of Medicine, Seoul, Korea.
Abstract
- Lumbar apophyseal ring fracture(LARF) is an uncommon injury that occurs during adolescence. We evaluated CT and MR findings of the lumbar apophyseal ring fractures in 35 cases of LARF(CT was performed in 35, MR in 6). CT demonstated characteristic bony fragments displaced posteriorly into the spinal canal and a corresponding defect in the posteroinferior aspect of the vertebral body rim, Plain film demonstrated only 8 cases(20%) of LARF. MR features included 1) discontinuity and truncation of the posteroinferior vertebral body(100%). 2) displacement of the low signal fragment(37.5%). Recognition of this entity is important in decision of treatment planning.
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