Great article on the effectiveness of RPR treatments for  Chronic Elbow Tendinosis http://ajs.sagepub.com/content/34/11/1774.short Background: Elbow epicondylar tendinosis is a common problem that usually resolves with nonoperative treatments. When these measures fail, however, patients are interested in an alternative to surgical intervention. Hypothesis: Treatment of chronic severe elbow tendinosis with buffered platelet-rich plasma will reduce pain [...]

Another article on the effectiveness of PRP Treatments Read the full documentation here http://ajs.sagepub.com/content/40/3/534  Conclusion: Osteochondral lesions of the ankle treated with intra-articular injections of PRP and HA resulted in a decrease in pain scores and an increase in function for at least 6 months, with minimal adverse events. Platelet-rich plasma treatment led to a [...]

Original article can be accessed here http://www.ncbi.nlm.nih.gov/pubmed/23299850 BACKGROUND: Specific growth factors have been proposed as therapeutic proteins for cartilage repair. HYPOTHESIS: Platelet-rich plasma (PRP) provides symptomatic relief in early osteoarthritis (OA) of the knee. STUDY DESIGN: Randomized controlled trial; Level of evidence, 1. METHODS: A total of 78 patients (156 knees) with bilateral OA were [...]

http://www.orthohealing.com/wp-content/uploads/2012/03/PRP-AJPMR-OA-apr-12.pdf to read an original research article pn the treatment of Knee Joint Osteoarthritis with Autologous Platelet-Rich Plasma in Comparison with Hyaluronic Acid.

Comparison Between Hyaluronic Acid and Platelet-Rich Plasma, Intra-articular Infiltration in the Treatment of Gonarthrosis http://www.recreationmedicalcentre.com.au/wp-content/uploads/2014/08/Cerza_2012.pdf

Positive Effect of an Autologous Platelet Concentrate in Lateral Epicondylitis in a Double Blind Randomized Controlled Trial. Platelet Rich Plasma Versus Corticosteroid Injection With a 1-Year Follow-up http://ajs.sagepub.com/content/38/2/255

Platelet Rich Plasma Treatment in Symptomatic Patients with Knee Osteoarthritis: Preliminary Results in a Group of Active Patients. "Background: With increasing frequency, platelet-rich plasma (PRP) preparations have been used to treat cartilage lesions to regenerate tissue homeostasis and retard the progression of knee osteoarthritis (OA). Purpose: To determine the effectiveness of intra-articular PRP injections in [...]