Subchondral bone damage has no influence in 12-week clinical outcome in patients with knee osteoarthritis treated with intraarticular platelet-rich plasma: A retrospective study

To determine if subchondral bone damage can influence the clinical results of intraarticular platelet-rich-plasma (PRP) treatment in knee osteoarthritic patients. A retrospective review of patients treated with intraarticular PRP injections for knee osteoarthritis who previously underwent a Magnetic Resonance (MR) of the knee was performed. Visual Analogic Score (VAS) was assesed for pain, whereas WORMS MR score was adapted to assess the damage to the subchondral bone (WORMSsc score). Sixty-one patients were treated with 3 weekly injections of PRP. Mean VAS reduction was 27.67±13.13 points (P