Histologic, physical and chemical investigation of myositis ossificans traumatica.

Histologic, physical and chemical analyses of the excised bony mass from a case of myositis ossificans traumatica were carried out. X-ray diffraction showed that the newly formed bone was an intermediate fluor-hydroxylapatite. Infrared spectroscopy and chemical analysis supported this finding. Contrary to articular free bodies the mineral part of the bony mass from the myositis ossificans investigated was formed most probably in a basic environment.