[Loco-regional anesthesia and orthopedic surgery of the shoulder].
Interscalene block can induce by itself anesthesia for shoulder surgery, if the opening does not reach the delto-pectoral site nor the shoulder-blade, but medical indications must be thoroughly talked over on account of the risk of phrenic paralysis with patients suffering from breezing trouble, and the surgical position that may disturb the anesthesiologist in case he has to increase anesthesia. A superficial cervical plexus block is required in anesthesia of the upper part of the shoulder. Regional anesthesia is quite useful too as a complement to general anesthesia, for it provides excellent postsurgical analgesia. A catheter may be inserted at the end of the surgical process through a nerve stimulator, but the patient does not tolerate it long, its efficiency greatly diminishes after the first day, and paresthesias may occur as after-effects. Today we prefer set interscalene block before the patient is anaesthetized, searching for paresthesias with a thin needle: this process does not take long to install, it is relatively painless and provides excellent analgesia during the per and post-surgical period, until the next day with long acting local anesthetics. Not any complication happened in fifty patients for one year.