Thoracic hyperkyphosis is one of the most common postural abnormalities. It is defined as increased thoracic curvature in the sagittal plan of the vertebral column. Normal kyphosis may range from 20º to 50º according to Cobb's radiographic method. The radiographic method is the most popular kyphosis measuring method, but because it is an expensive method and it exposes the individual to radiation, it is not the most appropriate method for periodic patient follow-up. Routine clinical examinations such as physiotherapeutic evaluation of thoracic kyphosis need to be valid, reliable, sensitive, practical and cheap.