Treatment of benign chondroblastoma

Six children have been operated on due to benign chondroblastoma at the mean age at first operation of 14.2 years (range 11-17 years). Mean follow-up was 4 years (2-7 years). Mean delay of the diagnosis was 12 months (6-24 months). One-stage surgery was successful in child with proximal fibula involvement, child with distal femoral epiphysis involvement (knee arthrodesis followed), two children with proximal tibia involvement. In 1 case of distal femoral epiphyseal involvement two revisions were necessary, 1 similar case is in the course of treatment. At the follow-up three children presented with the knee pain and restricted range of motion.