This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Orthopaedics
Soap bubble appearance at the lower end of the radius, the treatment of choice is - 
Select and explain. 
A. Local excision, B. Excision and bone grafting, C. Amputation, D. Radiotherapy
B: Excision and bone grafting
Answer: B: Excision and bone grafting 
Explanation: Treatment of choice for different sites is as follows.


The lower end of ulna, the upper end of fibula →  Excision of a tumour
Lower end radius →  Excision with reconstruction by ipsilateral fibula.
Around knee (lower end of the femur or upper end of the tibia) →  Excision with prosthetic replacement or arthrodesis.


Small tumours at any site are usually treated by curettage and bone grafting or cementing.