Measuring x-ray bone gap

Edit Post

Does anyone know how to use the “mag maker” tool or have any idea how I can accurately measure my x-rays. My doctor is far from me and he concludes both legs are equal just by looking at the photos. I’d have to fly out to him in order for him to check it accurately, which isn’t an option for me. Does anyone know how to to measure the bone gap of both legs using any kind of software, please let me know if you do
Thank you

Edit Post

They hospital where I get the x-rays aren’t able to measure the length, so that’s not an option