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Table 1 Clinical subdivision of MO

From: Bilateral myositis ossificans of the masseter muscle after chemoradiotherapy and critical illness neuropathy- report of a rare entity and review of literature

Fibrodysplasia ossficans progressiva

Symmetric congenital malformations of great toes, ossification of upper extremities and back

Traumatic MO

Circumscript new bone growth within the muscle after injury

Neurogenic MO

Occurs below spinal-cord injury