oandp.com

I am looking for a unique adapter that I know exists because I have one. The problem is that I need a couple more. These will be used to minimize knee center on Bartlett tendon cycling legs for knee disarticulation amputation level.
The adapter bolts into a four hole pattern and has a threaded male top, similar to that of a total knee. I called around to sps, ossur, trulife, but can't seem to find a source. Not sure if it's still being produced. Any info would be helpful.

Thanks, Zach Harvey, CPO