Abstract
In a previous report ten years ago, Kumagai and Ohta presented a case of myositis ossificans progressiva of nine-year-old boy. The authors re-examined this case as the more progressed stage.
Clinical and radiographical features were as follows;
1) The spine, which showed stiff scoliosis, was ankylosing and showed no mobility,
2) Left shoulder joint and bilateral hip joints were completely ankylosed,
3) Conditions of the other joints were less progressive,
4) The vital capacity diminished remarkably,
5) The parts having tendency not to ossify were not involved even in the later stage.
