What should you know about osteosarcoma in the shin bone?

The shin bone, or tibia, carries weight between the knee and ankle. A tumour there may cause a deep ache, swelling, tenderness, or difficulty walking. These symptoms also occur with injuries and other bone conditions, so they do not establish the diagnosis.

The team maps the tumour with imaging and confirms its nature with a biopsy. The location matters because surgeons must plan around the knee, ankle, muscles, nerves, blood vessels, and the bone needed for stable walking.

Arrange assessment with a specialist bone-tumour team, particularly when pain continues without a clear injury or swelling is increasing. Avoid high-impact activity until a clinician advises that it is safe. Treatment may involve chemotherapy and surgery to remove the tumour, with reconstruction considered according to the findings.

For background, see [Tumour Removal Surgery](/treatments/surgical-oncology/tumour-removal-surgery/) and [Chemotherapy](/treatments/systemic-therapy/chemotherapy/).

Seek prompt care for persistent shin pain, a growing swelling, or a new firm lump. Seek urgent help for sudden severe pain, inability to put weight on the leg, or a visible change in its shape, because the bone may be weakened.

Where exactly is the tumour in relation to the knee and ankle? What will the biopsy and scans show? What reconstruction options could support walking, and what restrictions should I follow while the diagnosis is being completed?