Functional Recovery of Patients Undergoing Resection and Reconstruction of the Lower Limbs for Bone Tumor.

Inclusion Criteria: * All participants undergone lower limb resection and reconstruction with localisation of the disease to the pelvis, femur femur, tibia and foot bones. * All participants undergone soft tissue resection surgery on the of the lower limb * All types of oncological diagnoses will be taken considered: osteosarcoma, Ewing and others. Exclusion Criteria: * Participants who undergo at our Institute only the surgical treatment while continuing adjuvant treatment at other centres * Participants for whom no rehabilitation treatment has been activated during adjuvant treatment at our Institute