The aim of the present study is to describe the course of functional recovery of patients with musculoskeletal tumours and undergone resection and reconstruction operations of lower limbs in the first six months post-surgery, differentiating them on the basis of the anatomical level involved.

Retrospective observational study will be conducted. The evaluation of the patients clinical recovery progress will take place at three different times: during the hospital stay postoperative, at 3 and 6 months after surgery. Different outcome measures will be considered in order to provide a complete picture of the patients functional recovery and their change.

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

All participants with bone tumor diagnosis treated at the hospital