History of surgery for limb bone tumors -- Non-Surgical Treatment Of Pediatric Bone Sarcomas -- Molecular Biology of Pediatric Bone Sarcomas -- Limb Salvage in Skeletally Immature Patients with Extremity Sarcoma -- Location of Sarcomas Within Bone: The Growth Plate -- A Histological Study of the Barrier Effect of the Physis Against Metaphyseal Osteosarcoma -- Growth Plate Involvement in Malignant Bone Tumours: Relationship Between Imaging Methods and Histological Findings -- Consequences of Delayed Diagnosis -- Imaging-Based Indications for Resection with Epiphyseal Preservation -- Conservation of the Epiphysis While Removing Metaphyseal Bone Tumors: Epiphysiolysis Before Excision -- Complications of the technique and solutions -- Clinical Results -- Other Techniques for Epiphyseal Preservation -- Worldwide Experience with the Cañadell Technique -- Questions and Answers.