At the Orthopaedics and Traumatology Unit of the Palmanova Hospital, between 27 October 1989 and 31 December 2003 we performed 506 automated percutaneous nucleotomies according to Onik for the treatment of lumbar disc hernia. The survey of 50 reviewed cases after evaluation of the subjective and objective clinical pictures according to the Cabot method allowed us to come to the conclusion that this percutaneous methodology is suitable to relieve damaged discs from compression. It is also well accepted by patients because it is not too traumatic, it requires short-term hospitalisation, presents no risk of post-operative fibrosis and does not create complications for the eventual traditional operation when unsuccessful. It is extremely important to accurately select the candidates keeping in mind the original indications given by Onik for percutaneous discectomy for which--in case of contained disc herniation--leg pain (sciatalgia) is more severe than low back pain affecting the lumbar region.
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