 Cellular MatrixA-CP HA Kit is a medical device manufactured by the Swiss company Regen Lab SA. Cellular MatrixA-CP HA Kit allows to prepare autologous PRP combined with a non-crosslinked hyaluronic acid in a safe, rapid manner and in a single step. The PRPHA combination is intended to be injected intra-articularly, in order to relieve osteoarthritic symptoms and to improve joint mobility and function. Therefore, the PRPHA combination might represent a novel therapeutic option for patient suffering from knee osteoarthritis. 