I have had significant medial OA for over ten years, going through two OSs that recommended TKR. My third did debridlement in 2007, indicating that I had five years to something. He indicated while I had some PF involvement, he would pursue a PKR if it were him.
Did significant research over the last two years and landed on Mako. My biggest concerns going into any replacement was infection control and alignment - alignment specifically with a PKR. Mako addresses the alignment with a carpenters first rule - measure multiple time before cutting. Alignment and resulting compensation are preplanned, verified before cutting, and validated with the trial. Cutting is minimal as it is performed per the plan, using a robotic controlled burring Dremel-type tool, 3cm into both the femur and tibia sides. Infection control was achieved by find an OS that performs many Makos per week OUTPATIENT!
Had surgery yesterday, March 7,2013. Walking with cane today. Feels better standing than pre-op. Going in, knew I had significant spurring on femoral, tibia, and patella. Had the surprise of a cyst in medial patella region!
Recovery is by no means complete, but early results are excellent! Mako is not available everywhere, and like any procedure, OS selection is critical. If you are on this board, you are likely doing your research.
Will update on progress, but first days are exceeding expectations!