Hands. We take them for granted, but our hands can reveal a lot about our general health. Symptoms like swelling of the fingers close to the fingernails - known as clubbing- can be a sign of lung or liver disease. Dr Graham Easton finds out about the new, long-lasting materials being used to replace finger joints and gets the latest advice on hand first aid. Producer Paula McGrath. E-MAIL: scirad@bbc.co.uk Repeated tomorrow 4.30pm