Three cases of segmental tonic-clonic activity occurring several hours after subarachnoid phenol rhizotomies are reported as a probable complication of the technique. All patients had experienced incomplete cord transections above the level at which the blocks were performed long before the performance of the block. Management of the complication and suggested etiologies are discussed.
- subarachnoid phenol injection
- Muscle spasticity
- Segmental tonic-clonic activity
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