Platelet rich stroma (PRS) therapy knee Osteo-arthritis India Dr.A.K.Venkatachalam Posted by stemcelladmin on May 18, 2019 with 0 Comment Share Platelet rich stroma (PRS) therapy knee Osteo-arthritis India relieved pain and restored mobility in this 75 year old gentleman. His gait has noticeably improved as vouched for by his friends and wife. Share