sentences:  Making full foot contact with such an unpleasant surface was, understandably, highly undesirable.Thus, pattens tended to only make contact with the ground through two or three strips of wood and raised the wearer up considerably, sometimes by four inches (ten centimetres) or more in contrast to clogs, which usually have a low, flat-bottomed sole integral to the shoe.A later pattern of patten which seems to date from the 17th century, and then became the most common, had a flat metal ring which made contact with the ground, attached to a metal plate nailed into the wooden sole via connecting metal, often creating a platform of by several inches (more than 7 centimetres).