Read the following context and choose the best option to answer the question.
Context: 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 ?
Options: 
- 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 .


They badly injured their knee .