Fig. 1From: State of art in intra-articular hip injections of different medications for osteoarthritis: a systematic reviewStudy selection process for intra-articular hip injections. HA: hyaluronic acid; PRP: platelet-rich plasma; CS: corticosteroids; SS: saline solution; UHMW-HA: ultra-high molecular weight hyaluronic acid; MMW-HA: medium molecular weight hyaluronic acid; bp: bupivicaine; NSAIDs: non-steroidal anti-inflammatory drugsBack to article page