Hi @krikett, welcome. I'm sorry and can only imagine your frustration from the set back and delay in your TKR rehabilitation. My husband had TKR revision surgery 2 months ago because his bone was abnormally growing and loosening his original implant. Towards the end of surgery, his patellar tendon began to peal away from the bone and had to be sewn back into the bone. As a result his rehab plan had a whole new look similar to yours... 8 weeks in the full leg brace with only graduated minimal flexion and weight bearing as tolerated. Rehab on hold basically. His doctor explained the importance of delicately striking a balance between allowing one repaired area to heal while not allowing the knee itself to stiffen up too much. That sounds similar to your endeavors.

I know your frustrated with your doctor, but how did he explain the patella fracturing during your surgery? It seems that resurfacing or shaving down the knee cap is a questionable procedure depending on mitigating circumstances like bone on bone and arthritis. You mention half of your knee cap is gone. Did it happen while the doctor was resurfacing the patella? Some situations may be unavoidable during surgery and while it's difficult to hear, not much can be done about it afterwards except move forward as best you can with a positive determination to be the best you can be given the circumstances.

After 5 months, are you continuing with PT and OT to get you farther along than 40 flex? What in home exercises are you independently doing to keep what range you do have? Please know that I am rooting for you and your forward progress. Keep hope alive, my friend! Will you keep me posted on how you're doing?