Revision 17 for 'Diastematomyelia'
It can occur involving multiple levels:
- 50% occur between L1 and L3
- 25% occur between T7 and T12
Associated bony, cartilagenous or fibrous spurs project through the dura mater forwards from the neural arch is visible in 33% of cases 1.
Laminar fusion associated with a neural arch defect is a good predictor of diastematomyelia and occurs the level of the defect, or at an adjacent level.
Other associations include
There presence of an extra echogenic focus in the midline between the foetal spinal posterior elements has been described as a reliable sign 2.
- multi level spina bifida
- widening of interpedicular distance : but this may be remote from the site of the spur
- as associated scoliosis
- anteroposterior narrowing of vertebral bodies
in addition to the pain film features may show
- AP bony septum on axial images (case 2)
It is modality of choice owing to superior anatomical detail. (More content to come)
diplomyelia : which is a true splitting of the spinal cord.
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