File:Lectures on orthopedic surgery (1899) (14774436844).jpg

Identifier: lecturesonortho00ridl (find matches)
Title: Lectures on orthopedic surgery
Year: 1899 (1890s)
Authors: Ridlon, John, 1852-1936 Thomas, Hugh Owen, 1834-1891 Jones, Robert, joint author
Subjects: Orthopedics
Publisher: Philadelphia, E. Stern & Co., Inc.
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

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aries find no rickets. They account for thison dietetic and hygienic theories. The Japanese livemuch of the time out of doors; their houses are of soflimsy a build that ventilation is perfect; they batheevery day, and from the earliest childhood fish formsan important part of the dietary. Mothers in childbedeat fish, and nursing children are fed upon fish as soonas they receive any food except the mothers milk.From this, one must conclude that syphilis does notalways beget rickets, despite the fact that while thenative African is free from rickets the Americanizedand syphilized African is the father of rachitic chil-dren. The infectious diseases of childhood, especiallywhooping-cough, and the digestive disturbances of in-fancy often precede the onset of rickets; but perhapsthe most that can be fairly said upon the subject of 252 etiology is, that anything which causes malnutritionin a young child may lead up to the development ofrickets. Even less is known of the pathology than of the
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Fig. 204.—Congenital rickets, showing bowlegs. etiology. The new bone formed beneath the perios-teum is soft and deficient in earthy matter, and in someinstances the animal matter does not yield gelatin onboiling. The epiphyses are enlarged, and ossification 253 proceeds slowly and irregularly. The border of ossifi-cation, instead of being a clearly defined straight line,is serrated, the new bone shooting into the cartilageand the cartilage extending for some distance alongthe shaft of the long bones. The medullary cavity isadvanced beyond the border of ossification and is filledwith a reddish, pulpy material. The lamellae of thebone are loosely inposed, one upon the other, and insome fresh specimens may be peeled off. The samedefective development is found in the flat bones. The liver, spleen, and lymphatic glands are oftenenlarged, and the quantity of white brain-substance isincreased. The muscles are pale and flabby and theligaments are relaxed. The early symptoms of rickets are

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