Overview
- A multidisciplinary CSUR team at Hospital Gregorio Marañón removed the osteosarcoma with clear margins in a hybrid operating room.
- Engineers and surgeons used a patient-specific digital twin to rehearse the procedure and to create custom cutting guides for precise tumor resection and nail extraction.
- The femoral defect was rebuilt with an adult-donor tibia from the hospital’s Bone Bank, selected via Osteoteca 3D and positioned inverted for an exact anatomical fit.
- Surgeons preserved the knee joint and the tibial growth cartilage to protect limb function and reduce future length discrepancy.
- The child had two intramedullary nails from prior fracture surgery that raised dissemination risk, and the patient will continue oncologic treatment with recovery described as favorable by regional authorities.