Another effective treatment is a PRP injection. PRP stands for Platelet-rich plasma. This involves taking some blood from your arm and putting it into a machine that separates the liquid and different types of cells in your blood. Special cells called platelets are then extracted from this mixture and injected around the painful area in your tendon. These platelets contain important proteins that stimulate healing and are thought to kick-start the healing process. It is important to rest your elbow for a few weeks after the injection and avoid anti-inflammatory drugs for 4 weeks to allow the healing process to start.
It can take up to 3 months to improve after this injection, and it is important to continue with the physiotherapy during this period. At least 50% of people notice a marked improvement, although many still have a tender spot on the bone which does not fully resolve.