RESUMO
The undeniable postoperative analgesia brought by the lumbar plexus block among patients scheduled for major surgery of the hip or knee justifies, the setting of a catheter to allow a continues analgesia more durable. Having drawn aside the difficulties of the daily practice (in allusion to the number of blocks carried out per day) and anatomical variations, the failure of the perineural catheter setting is in direct relationship with the material used by the anaesthesiologists for neurostimulation. The presentation of a case report describes a failure of catheter introduction due to the canula in deep continuous blocks, and the advantages and disadvantages of the various sets of neurostimulation. The authors conclude that the sets with the "catheter through the needle" are to be recommended, particularly the stimulating Tuohy needle.
