Platelet-Rich Plasma for Elbow Pathologies: a Descriptive Review of Current Literature.

PURPOSE OF REVIEW: Platelet-rich plasma is used in many orthopedic pathologies such as tendinopathies and ligament injuries. The clinical results reported in the scientific literature are, however, confusing. The aim of this manuscript is to provide a narrative literature review regarding the role of PRP in the most common elbow soft tissue pathologies.

RECENT FINDINGS: The response to PRP seems to be favorable when compared to steroid injection for pain management and for patient-reported outcomes in lateral epicondylitis. PRP injection does not seem to have the potential complications associated with a steroid injection such as skin atrophy, discoloration, and secondary tendon tears. Only a few manuscripts comparing the results of PRP treatment with either extracorporeal shockwave (ESW), dry needling, or even surgical treatments in lateral epicondylitis exist. The use of PRP in other elbow pathologies such as golfer's elbow, ulnar collateral ligament injury, and distal biceps and triceps pathology is examined in few studies, with unclear recommendations. Regarding elbow pathologies, PRP injections in tennis elbow seems to be the best-studied intervention. A major limitation in these studies is the significant heterogeneity in the methods used for preparing PRP, for example employing leukocyte-rich, leukocyte-poor preparations, PRP with or without activation, which makes the results of the studies difficult to compare. Results of this review show that more studies on larger cohorts, with comparable formulations, and with longer follow-up are required to give optimal suggestions concerning the use of PRP in elbow pathologies.