I broke my tibia and fibula in a skiing accident when I was 15. Basically my skis got stuck on a mogul, I kept going forward, and my boot was frozen to my ski. So I broke it right above the ankle where the boot meets the shin.
When I got the cast off six weeks later my leg looked like a toothpick. My calf muscle had atrophied tremendously and my ankle was so stiff that I couldn't even really move it on my own. I had to use my hands to move my foot or get it going with some really ginger baby steps.
I tried playing a little half court basketball with friends around the three month mark, but I never drove to the hoop or played anything closely resembling good defense where I went side to side.
Of course I didn't have a boot that could be taken off occasionally to give my ankle some movement like Hayward probably will after a few weeks. And I didn't get any electro-muscle stimulation.
I'd say the biggest thing to get over was the fear. You're basically without the use of your most important limb (insert jokes here). I felt totally helpless in any situation, whether it be something like "my house is on fire, I have to run out of here" to "there's a guy with a gun, I can't run away." You live in this weird mentality of feeling literally broken. It's like a trust you have had in your self, your ability to just take a step, is not only gone, but if you tried to do it your leg would snap in two again. It's a weird mojo on your mind.
I broke my leg on March 15th and it was June 15th before I was goofing around playing 21 with my friends. I'd say by August my leg was back to 90% and I could run and jump, but I was nervous as hell for the entire next year whenever I did.
And it took several more years before I went skiing again. I probably went skiing about 4-5 more times in my entire life and stopped in my early twenties. I've just decided I don't want to do it any more because I get too much anxiety on the slopes.