Hello @denishous, Welcome to Connect. I checked into stem cell therapy but my Mayo Doctor didn't think it would work for me as my degenerative arthritis was already too bad so I went with a knee replacement I still think it is the way to go if you are younger. I was 75 at the time and had already been turned down from a clinical trial because I was older than 70. Here is some information from 2018 you might find helpful.

Novel stem cell therapy for repair of knee cartilage: https://www.mayoclinic.org/medical-professionals/orthopedic-surgery/news/novel-stem-cell-therapy-for-repair-of-knee-cartilage/mac-20450891

Have you thought about having your doctor give you a referral to Mayo Clinic?