Long-term effects of nerve blocks in chronic pain. Donner B, Dertwinkel R, Zenz M, Schulte-Adams M, Weiss T. Regional blockade techniques have been of crucial importance for decades in chronic pain therapy, but in recent years some developments have made a new definition of the status of invasive procedures necessary.ong-term effects of nerve blocks in chronic pain. Donner B, Dertwinkel R, Zenz M, Schulte-Adams M, Weiss T. Regional blockade techniques have been of crucial importance for decades in chronic pain therapy, but in recent years some developments have made a new definition of the status of invasive procedures necessary.
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