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The material of this volume is divided into two general parts: immediate effects of injuries in boxing, and remote effects of such injuries. The former part deals with the physiology and pathology of different injuries such as the chin knockout, the solar plexus knockout, the heart knockout and the carotid sinus knockout, all due to legal blows. The author produces some evidence to show that the chin knockout, the most common of the four, is due to injury to the medulla chiefly by contre-coup. It differs from the concussion of football and other sports unless the head of the injured boxer strikes the floor. There follows a brief discussion of such conditions as "grogginess" which fall short of the severity of a knockout. The latter part deals with the pathology of delayed effects of repeated blows on the chin, head or other parts. There are citations of numerous cases including
The Medical Aspect of Boxing. JAMA. 1941;117(25):2199. doi:10.1001/jama.1941.02820510087036
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