Repetitive strain injury is also known as cumulative trauma disorder and is caused by the repetitive movement of or overuse of an area of the body. It can be the result of any repetitive task including working at a computer, gardening, packing, playing sport and decorating. 

RSI is most common in the upper body where injuries can occur to the hands, wrists, elbows, shoulders and neck. 

If you have suffered a repetitive strain injury then your symptoms may include:

• Tenderness
• Pain
• Weakness or clumsiness
• Numbness or pins and needles
• Impaired movement

Repetitive strain injuries affect the muscles, nerves and tendons. Small tears can occur in the muscles and repetitive actions can reduce the lubrication in the sheaths through which tendons move, causing abrasions and inflammation. 

Anyone can suffer a repetitive strain injury but there are several factors which increase your risk of injury:

• Failure to take regular breaks
• Poor posture
• Poor technique
• Cold temperatures
• Stress
• Poor general fitness