I have had platelet injections before. They seem to work pretty well and are basically a natural alternative to other options. At least give it a shot. You can google it to see what the odds are.
I had Achilles surgery in 2006, I had chronic tendinitis, they removed maybe 15% of the tendon, I suffered every since.
I met a sports Orthopedic , he told the first surgeon should have never taken any tendon,
He thought that PRP injections might work, and he said it may take three injections.
IT worked for me after the second injection, it was about 8 weeks after the second injection before I felt alot better.
It does work
hope this helps