The imaging of myositis ossificans

Semin Musculoskelet Radiol. 2010 Jun;14(2):201-16. doi: 10.1055/s-0030-1253161. Epub 2010 May 18.


Myositis ossificans (MO) is characterized by abnormal heterotopic bone formation involving striated muscle, tendons, ligaments, fasciae, and aponeuroses. Myocardium, the diaphragm, tongue, larynx, smooth muscle, and sphincters are all spared. Several subtypes of myositis ossificans exist: posttraumatic myositis ossificans (PTMO), nontraumatic/pseudomalignant myositis ossificans, and myositis ossificans progressiva (MOP). This article reviews the clinical features and differential diagnoses of each subtype of MO and illustrates the typical imaging features demonstrated by plain radiography, ultrasound, radionuclide bone scans, computed tomography, and magnetic resonance imaging.

Publication types

  • Review

MeSH terms

  • Diagnosis, Differential
  • Diagnostic Imaging*
  • Disease Progression
  • Humans
  • Myositis Ossificans / diagnosis*
  • Myositis Ossificans / etiology
  • Myositis Ossificans / therapy
  • Prognosis