Wow!!!!! You did a good job. How did you do this? It has fractured into the joint line which is often a problem that delays and even prevents a ful recovery. Often the brain just won't let the quads return to normal function perhaps for fear of damaging the joint again. You have a long journey ahead of you. I would think about it in small achievable steps, the first being restoration of full knee joint range of movement (or at least maximizing what is possible). When you do begin to rehab the leg try to choose exercises that involve the whole leg and the normal function of the leg. Looking forward to hearing the details of the accident.