Lameness is one of the major ailments of dairy cows. The distress it causes to the afflicted animals is reflected in decreased milk yields and an increase in infertility. Over the past twenty years, there has been a continuous programme of research in Britain and overseas into all aspects of the disease. In particular, our understanding of the changes in hoof growth around the time of calving has greatly increased. This enlarged and completely revised new edition takes into account all the recent research findings and presents the results in a readable manner. The highly illustrated text is fully referenced for students who wish to enquire further, but above all it is a straightforward manual for the practical use of those dealing with dairy cows.