<prompt> This disease isOsteochondrosis of the lunateOsteochondrosis of the navicularqTuberculosis of the scaphoidSyphilitic dactylitis  <response>: Osteochondrosis of the tarsal navicular Kohlers disease is characterised by aseptic necrosis of the Navicular bone causing a painful limp in a child usually 4-10 years of age. 