. General surgical pathology and therapeutics, in fifty lectures : a textbook for students and physicians. ction against thecoagulum, and lastly bythe regurgitation of theblood into the artery. Such a traumatic an-eurism may also occur inanother, more secondaryway ; the arterial woundat first heals, and subse-quently, after removal ofthe pressure bandage, theyoung cicatrix gives way,and then for the first timethe blood aneurisms are not always caused by punctured woundsof arteries, but rupture of their coats by great tension and contusions,without any external wound, may resu
. General surgical pathology and therapeutics, in fifty lectures : a textbook for students and physicians. ction against thecoagulum, and lastly bythe regurgitation of theblood into the artery. Such a traumatic an-eurism may also occur inanother, more secondaryway ; the arterial woundat first heals, and subse-quently, after removal ofthe pressure bandage, theyoung cicatrix gives way,and then for the first timethe blood aneurisms are not always caused by punctured woundsof arteries, but rupture of their coats by great tension and contusions,without any external wound, may result in their development. Thus,in his surgical lectures, A. Cooper tells of a gentleman who leaped aditch while out shooting, and at the time felt a pain in the hollow ofhis knee, which prevented his walking. An aneurism of the poplitealartery soon developed in the bend of the knee, that finally had to beoperated on. The artery was partly ruptured by the leap. Ruptureof the tunica intima and muscularis is sufficient to permit the forma-tion of an aneurism. Should the tunica adventitia remain uninjured,. Anenrisma tranmaticnm of the brachial artery; afterFroriej), Surgical Copperplates. Bd. IV., Plate 483. 126 SOME PECULIARITIES OF PUNCTURED WOUNDS. the blood may detach it from the tunica media; this forms a varietyof aneurism called aneurisma dissecans (dissecting aneurism). Casesof punctured wounds with subsequent aneurisms occur particularly inmilitary practice, but not unfrequently also in civil practice. I saw aboy with an aneurism, as large as a hens-egg, of the femoral artery,about the middle of the thigh, that had been caused by puncture witha pen-knife, on which the boy fell. A short time since I operated onan aneurism of the radial artery, that had developed in a shoemakerafter an accidental puncture with an awl. An aneurism is a tumor communicating directly or indirectlywith the calibre of an artery. This is the common definition. Thecommunication is immediate in the c
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