Correction: Periosteal preservation: a new technique in resection of bone high-grade malignant tumors in children—about eleven cases.

Proximal tibia without its periosteum and only the previous site of biopsy was resected with the tumor (footnote: star: anterior tibial tuberosity). The distal fibula tumor was removed (at the same surgical time) (footnote: star: periosteum preserved). 2A Ewing sarcoma of the distal right fibula with purely intraosseous second localization in the homolateral proximal tibia in a 9-year-old boy. [Extracted from the article]