I recently tore the cartilage in my right knee , and had surgery . I was prescribed Hydrocodone for the pain before the surgery but complained about not being able to sleep . So after the surgery my Dr. prescribed Oxycodone .

Question: What must have happened before the person required surgery ?
Answer: Their finger was cut off in an industrial accident .They broke their ankle in a fall .None of the above choices .They badly injured their knee .