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local anesthesia

The procedure is started respecting strict sterility. The skin subcutaneous layer, lumbar muscles and the articular process are infiltrated by local anethesia (1% lidocaine) with a 22-gauge needle 9 cm long. The position of the 22-gauge needle is checked by fluoroscopy and CT.

Fig 16: local anesthesia


Fig 18 : CT control of local anesthesia


Fig 17: local anesthesia