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The principle behind this technique is to reduce inflammation of the nerve root by injecting a steroid and thus reducing the intensity of pain. Those with bilateral symptoms, multiple nerve root involvement and neurological weakness were excluded. Our own experience is that diagnostic selective nerve root blocks SNRB with local anaesthetics, might provide information about root origin of radicular pain, when the blocks are performed guided by magnetic resonance imaging MRI findings and clinical symptoms in the lumbar as well as in the cervical spine [ 11 ].
Inclusion criteria were cervico-brachialgia with corresponding significant degenerative MRI findings at two levels, on the same side as the symptoms. Those with severe disc prolapse had no relief except for the immediate postprocedural relief. The entire procedure usually takes less than 30 minutes.
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