The practice of pediatrics . berculous disease (Fig. 67).These rachitic curvatures can usually be made to disappear by gentletraction or change in position during the disease proper. This is nottrue, however, of the resultant bendings that may remain as permanentdeformities after the rachitis itself is past. In the posterior or lateral regions of the head, more often over theoccipital bone, there are sometimes found softened spots of imperfect 326 DISEASES OF NUTRITION bone development called craniotabes. On pressure with the tip of thefinger these areas dent in, but spring out again when the
The practice of pediatrics . berculous disease (Fig. 67).These rachitic curvatures can usually be made to disappear by gentletraction or change in position during the disease proper. This is nottrue, however, of the resultant bendings that may remain as permanentdeformities after the rachitis itself is past. In the posterior or lateral regions of the head, more often over theoccipital bone, there are sometimes found softened spots of imperfect 326 DISEASES OF NUTRITION bone development called craniotabes. On pressure with the tip of thefinger these areas dent in, but spring out again when the pressure isreleased. Craniotabes gives to the finger a feeling of crackling. Secondary changes in the long bones regularly develop, especially inthe legs. These may result in bowing outward of the tibiae and femora,with the production of the condition known bow-legs, or genu varum;or in the opposite condition of knock-knees, or genu valgum. Theformer seems due more particularly to mechanical bending of the bones, Fig. 07. Rachitic kyphosis. (Whitman.) while the latter consists mostly of an hypertrophic growth and consequentlengthening of the inner condyle of the femur, causing the tibia to makean obtuse angle with the femur. As a result of this, when the childsthighs are placed parallel with the knees together, the ankles areseparated more or less according to the amount of the knock-kneepresent. When the bones of the upper extremity become bent, the humerususually bows outward, and the radius and ulna backward. In severecases the bones are so softened and yielding that irregular and verydistressing deformities may develop in any of the long bones (Figs. 68and 69). RACHITIS 327 In the pelvis rachitic changes frequently are found, but they alwaysescape notice and are unimportant except in women at the time of commonest form of pelvic deformity of rachitic origin is a shorteningof the anteroposterior diameter, due to a pushing forward of the bodyof the sacrum. The l
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectchildren, bookyear190
