[Instrumentation of idiopathic scolioses by isola and miami-moss systems.]

In our University department 135 patients were operated and followed up for minimally 2 years postoperatively. Isola system was used in 92 patients, Miami-Moss in 43 patients. The average curve magnitude was preoperatively in Isola group 61,0 degrees , in Miami-Moss 54,8 degrees . Isola was used exclusively posteriorly, Miami Moss also anteriorly (16 cases). In more severe curves the rib osteotomy of concavity was added (22 patients), most severe curves were released by anterior discectomy with interbody fusion (24 patients). The average postoperative correction was in Isola 55,6 %, in Miami Moss 64,1 %, loss of correction in Isola 2,8 degrees, in Miami Moss 4,3 degrees. No complications were observed in Miami group. A double severe complications in one patient were recorded in Isola group, one transient monoparesis and 5 wound infections.The achieved correction and its loss of both systems were practically not different. Key words: idiopathic scoliosis, surgery, Miami Moss, Isola.