My surgeon did not offer me an MRI, but said he wanted to complete an arthroscopy to see what was preventing the knee from bending , and remove any scar tissue. It was more extensive fibrosis than he had originally thought. I was up and around the next day, without crutches . I have kept with the same surgeon ever since my first surgery last November, so I trust him now. I have changed Physios so many times, and it is good when you have one who understands arthrofibrosis.