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Article
January 20, 1917

CALCIFIED HEMATOMA

Author Affiliations

Fellow of the American College of Surgeons DETROIT

JAMA. 1917;LXVIII(3):177-180. doi:10.1001/jama.1917.04270010177006
Abstract

Interest in the occasional development of bone masses in and beneath muscle following trauma has been great, especially since the Roentgen ray has made possible their clear demonstration. The condition has commonly gone under the name of myositis ossificans traumatica, because it has been believed that damaged muscle is actually changed into bone. Other names have been suggested depending on various theories of origin; for example, calcified hematoma, based on the theory that the blood clot following an injury becomes calcified, and periosteal callus, on the theory that the growth is merely misdirected callus formation. The best known theories so far put forward are, first, the hemic theory (Sadeler). This theory supposes that the hemorrhage following an injury to muscle is first transformed into cartilage which later ossifies. Second, that the tumors are aberrant sesamoid bones (Bard). Third, the theory that the growths result from bits of p e r

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