Based on the context and the answer, generate a question. 

Context: They found a walker for me for $ 5.00 . Which , the hospital wanted to send me home with a walker rather than me use my crutches , so it 's not a step backward . I feel safer on the walker , I have to admit . I think that the wheelchair may be going back this week , too .

Answer:

Because they just had surgery



Why does the speaker need a walker ?