i dont like to think of my self as being a dreams expert but for one the medication isnt helping. for two where you have broken your leg badly there is no way at this point in time you cant play hockey, the pain in the night may be reminding you this therefore triggering of your dreams about you not being able to play.

sorry about not being a great help i can only give an explanation if i can find a way to help i will get back to you.