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  • Title: Magnetic resonance imaging of lumbar vertebral apophyseal ring fractures.
    Author: Peh WC, Griffith JF, Yip DK, Leong JC.
    Journal: Australas Radiol; 1998 Feb; 42(1):34-7. PubMed ID: 9509602.
    Abstract:
    Posterior lumbar vertebral apophyseal ring fractures are described in three adolescents presenting with severe low back pain, spinal tenderness and lower limb neurological deficit. Magnetic resonance imaging showed severe L4/5 posterior disc protrusion in all three patients. The actual fracture fragment was visualized with difficulty on MRI alone. The diagnosis of apophyseal ring fracture was made by either radiography or CT. Computed tomography delineated the size, shape and site of the fracture fragment. Surgical confirmation was obtained in all cases. Posterior lumbar vertebral apophyseal ring fractures may be difficult to visualize on MR imaging. Careful review of radiographs, supplemented by targeted CT, is necessary for the correct diagnosis and management of this entity.
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