Autologous Blood and Platelet-Rich Plasma Injections for Enthesopathy of the Extensor Carpi Radialis Brevis Origin

A A i s a THE PATIENT A 45-year-old engineer and recreational racquetball player reports the gradual onset of elbow soreness over the past 6 to 8 weeks. She has pain with raking and lifting her laptop. Examination demonstrates tenderness over the lateral epicondyle and pain with resisted wrist extension. She has mild tenderness over the proximal extensors. Her primary care physician recommended an elbow strap, oral nonsteroidal anti-inflammatory medication, and wrist extensor strengthening exercises supervised by a therapist, but these have not helped. A colleague at work told her about platelet-rich plasma (PRP) injections and she is hoping that this will cure the problem.