A PRP injection in or around a tendon may be offered to promote healing. Please note that not everyone will have a positive lasting response following the injection. You may find the following information useful.

What is being injected? 

The injection consists of Platelet-rich-plasma (PRP). Platelets are blood cells which promote healing. 

What should I do afterwards? 

It is recommended that you should avoid any strenuous activities for approximately 48 hours. Appointments for physiotherapy should be deferred for at least 7 days. 

Is the injection painful? 

The injection can be painful. Whilst the skin can be numbed with local anaesthetic, unfortunately it is inadvisable to mix local anaesthetic into the injection as this may deactivate the platelets. 

What are the side-effects and risks? 

Vaso-vagal syncope: Some patients may feel faint after an injection. If this happens, you will be asked to lie down for a short while to recover.
Worsening of pain: There is a possibility of an increase in pain or discomfort for 24-48 hours after the injection. You may wish to pre-emptively take some pain-relieving tablets for a day or two after the injection. The pain will usually ease on its own. You should avoid taking any anti-inflammatory medication. 
Infection: There is a small chance of infection (less than 1 in 200). If you notice any of these signs or symptoms

  •  redness 
  • increased warmth 
  • drainage 
  • fever over 37.5 degrees Celcius 

you should contact the hospital for advice. 

Do I need to be seen again? 

You will be advised to make an outpatient appointment to see your consultant some weeks after receiving the injection.

Further information

Please see the information on the AAOS website by clicking here.