“ Suspected in patients presenting with lower-extremity motor or sensory dysfunction, urinary dysfunction and scoliosis or foot deformity (e...
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Suspected in patients presenting with lower-extremity motor or sensory dysfunction, urinary dysfunction and scoliosis or foot deformity (e.g. club foot, hammer toes, etc.). It is a developmental anomaly due to obstruction to the normal ascent of the cord. Associated with e.g. spinal lipoma, diastematomyelia, thickened filum terminale, Chiari malformation, syrinx, myelomeningocele and dermal sinus.
MRI
• Conus lies lower than normal (i.e. below L2).
• Look for a cause (e.g. spinal lipoma [high signal on T1 and T2], diastematomyelia, thickened filum terminale [>2 mm at L5-S1]).
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