Ouch that sounds really really painful for you, how did you manage with walking around on a broken bone, you a lot braver than me I can tell you.
Have you ever been back for more physio or for a second opinion on what is causing that vice like pain in your knee?
You may find the Patello formal joint & bone break around the knee sections useful for you as there are our members who have suffered the same in ther & they can give you more advice that i can.
But anyway, welcome & I hope you find the board useful
Iona x