PERCUTANEOUS TREATMENT OF LUMBAR DISC HERNIATION

Nine hundred and eighteen patients were subjected to percutaneous trea tment of lumbar herniated disc. 733 of these were treated through enzy matic nucleolysis with chymopapain, for a total 883 levels (150 of who m were treated at two levels): 185 patients were treated with Onik's a utomate discectomy. Chemonucleolysis was carried out on 733 patients ( 79.8 %) and automated discectomy in 185 cases (20.1 %). Chemonucleolys is has led to the resolution of the symptoms in a high percentage of c ases (82.2 %). Nucleotomy was an effective method of management in 74. 6 % of the cases. The availability of several therapeutic methods has allowed us to respond in a more appropriate way to the patient's requi rements and, in the case of failure, offer a more flexible therapeutic spectrum, and to consider surgery as the last resort. As regards the relation between enzymatic nucleolysis with chymopapain and disc nucle oaspiration, we feel that the two should not be in competition, for th e indications are precise for both methods: in the enzymatic treatment , the hernia can be medium-large sized, in a sub- or extra-ligamentous position. The treatment of patients with moderately severe symptoms i s preferable. In disc nucleoaspiration, the hernia must be small-sized .