Inclusion criteria:
1. Have grade 2-4 knee osteoarthritis
2. They have been taken Corticosteroids and NSAIDs for a long time, but due to its side effects , they are not able to take these group of pills.
3. Although Corticosteroids and NSAIDs have been taken for 3 months, significant improvement has not been observed in sense of pain.
4. Being in the range of 18- 85- year-old
Exclusion criteria:
1. There are have blood diseases, cancers, AIDS, and hepatitis.
2- Taking Immunosuppressive drugs for the last 6 months; NSAIDs, ASA within 7 days ago; Plavix, Warfarin within 3 days ago.
3- Tobacco users.
4- Being pregnant or breastfeeding mothers
5 - Have immune system disease
6 - BMI less than 30
7 - Susceptible to lidocaine and epinephrine
8 - Have other joint disease, such as chondrocalcinosis, rheumatoid arthritis, gout, fibromyalgia, lupus,…
9- Have a knee joint surgery up to a year ago
10 - Have arthritis in the pelvis, shoulder...
11 - Unable to tolerate the pain without taking pain killer pills for 5-7 days before each medical visit.