The elbow joint acts as a hinge allowing you to bend and straighten your arm. It is made up of the upper arm bone (the humerus) and two bones in the forearm (ulna and radius). Your elbow also allows you to turn your palm upwards or downwards.
Around the joint are a number of muscles, which help move the elbow, wrist and fingers. There are also nerves close to the elbow joint (if you hit your ‘funny bone' this can cause pins and needles in your arm).
What is tennis elbow?
It can be described as pain on the outside of your elbow. It is thought that the tendons around the elbow can become inflamed. If this continues then this can cause ‘wear and tear' in the tendon and it can become more swollen and thicken.
You get pain when using your forearm, for example turning a door handle. Some people have a constant pain. Pain on the inside of your elbow is a similar problem. It affects different tendons and is often called golfers elbow. You are more likely to get tennis elbow if your forearm muscles are unfit and you then increase your activity. For example:
- a DIY project/ painting where you have a repetitive arm movement,
- or you go on holiday and play a lot of racket sports.
In some cases however it can happen for no reason.