|What is a cortisone injection?|
|Around the Academy:
BBC Sport Academy tells you all you need to know about cortisone injections.
What is cortisone?
An injection of extra cortisone increases the body's ability to reduce pain, heat, redness and swelling of the joints.
Duncan Ferguson has been treated with cortisone in a bid to save his career.
When are cortisone injections required?
How does the injection help?
How often do you need one?
How long does it take before the cortisone begins to work?
What should I do if I have a cortisone injection?