I have no answers yet after 5 years with this. I have been doing PT for about 2 that is helping somewhat, but the knee still snaps back after I’ve walked for awhile. The ortho continues to say the hardware is in good position. Prior to the Jenn replacement, I had surgery for a torn meniscus in that knee - I wonder if that’s a factor. Did any if you have a prior surgery u. The same knee as well?