@jsbegin68 Welcome to Mayo Connect where we are a community of patients and caregivers who share our journeys with a variety of health issues.
One thing that you will notice is that we try to rely on research based information and avoid "Internet sensations " and anecdotal or unproven treatments.
Here is a brand new article where the authors sought out clinical studies of umbilical stem cell therapies -
https://stemcellsjournals.onlinelibrary.wiley.com/doi/10.1002/stem.3150
Here is a recent article about stem cell therapies for joints - it looks like studies are still going on.
https://www.arthritis.org/health-wellness/treatment/joint-surgery/preplanning/the-future-of-joint-repair
One caution I read in many scholarly articles on the subject was to avoid those who are promoting this therapy in stand-alone clinics or online. Here I a list of the current FDA approved list of uses, it is increasing all the time
https://www.cordforlife.com/list-of-fda-approved-treatments/
Has your orthopedic doctor offered you stem cell therapy?