PRP treatment is the use of platelet plasma injection to achieve the therapeutic purpose, for the treatment of osteoarthritis in the end how many injections, there is no relevant clinical statistics, mainly depends on the progress of the disease and the severity of the disease, as follows. Osteoarthritis patients with different conditions and different degrees of severity of the disease, the number of times to choose PRP treatment is not the same. For some patients, they can be discharged from the hospital for observation after receiving 3~5 days of treatment. If the condition is more serious, it is necessary to postpone the discharge time and increase the treatment course until the condition is under control Using PRP therapy to treat arthritis mainly promotes tissue recovery by initiating or accelerating its own repairing ability to alleviate symptoms such as poor healing and pain caused by osteoarthritis, but the exact effect varies from person to person and the course of treatment is not uniform. Osteoarthritis patients are advised to seek medical advice before taking PRP treatment and follow the doctor’s requirements. For those who do not get good results, they can switch to surgical treatment.