How do you convince you doctors you need crutches for your knee?

To convince your doctor you need crutches for your knee, clearly explain your symptoms and how they affect your mobility and daily activities. Describe any pain, instability, or difficulty walking that you experience, and mention any previous injuries or conditions related to your knee. It may also help to express your concerns about exacerbating the injury without assistance. Finally, be open to their assessment and recommendations based on your condition.