Yes, I am headed for a TENEX procedure in the next few months but right now I'm banking on UltraSound & Injections/excission to locate & remove dead patellar tendon tissue. My understanding is that if the patellar tendon was pushed aside during TKR, rather than cut, this wouldn't have happened but working around the tendon would have taken more time. However, I'm not an MD so seek local counsel.

My current surgeon (the fourth) craftfully excises the dead tendon and hopes that healing will rebuild it with vibrant tissue. That's the theory... but with age, tendons heal more slowly or not at all. However, it may be working because I am able to use the treadmill every other day versus not at all. After 15 minutes of treadmill the TKR knee is inflamed and heads toward pain level 10 so I stop. My dog cuddles next to my knee because it's so warm.

In a few days I have another UltraSound scheduled and will know if the excised tendon is growing back.

Tenex is a more aggressive approach and I declined because I'd have to use crutches for 7-10 days.

To the original question, the MUA didn't last long because of scar tissue that filled in but I briefly enjoyed ROM of 125. The scar tissue removal process didn't last long either, the scar tissue grew back again. I've resigned myself to persistent pain, an inflamed knee, limited ROM of 95 degrees, and endless rage that I agreed to the TKR procedure. I choose pain over couch potato but sooner or later the pain will win.