Sounds like Mcgyver time to me. Gets yourself a 2x4, some rubber bands, 3 paper clips, and an ice hook...

Take what you want from below. I personally would come off and pct. Smash legs. Squats are going to make you grow anyway or at least give you a fighting chance of retaining you strength.
Other thing is diet. Whatever your goals are, stick to your diet and you will get back to where you want to be a lot quicker.
I'm coming back from injury myself too. Sucks

Duuuuuuude! This exact thing happened to me in aug. 2012. I started pct, dide legs and cardio. When the cast came off, I lifted till I peaked and in 2 weeks I start my 1st cycle since august. Been off 6 months and still look like I'm carved from granite. Don't get down on urself cause its mildly depressing. Keep your chin up and get thick thighs bro.

Legs time, hit those wheels and as Levelup said use it as an opportunity to strip some BF if you need to on cardio.

You should be able to do a bit of upper body. I broke my wrist a year ago, and still managed to do light workouts for most things. Got a few funny looks in the gym with a cast n my arm though!

Wishing you a speedy recovery.

Fuck pct lol.... Bro just do a shot of test for a few wks till it comes off and do light workouts while its on like grrrl said. Don't pct and give up u can just extend the cycle a little. Only 4 wks for the cast right?

it is possible for you to work around it.depending on how they cast it.. .. not sure why everyone thinks they gotta lift a mountain to get bigger or have gains..

looks like its pct time for your brotha, can still do cardio and legs, hack squats, smith machine, extensions, curl machines calf presses....hit them e3d
edit: guess my idea isnt too popular. i guess it depends on how bad the break is and how long you have been on cycle etc.