A treatise on the diseases of infancy and childhood . um, directedforward and a little upward. Careful examination shows, in somerachitic patients, thickening of the margins of the scapula, like that ofthe cranial bones. The humerus is occasionally bent, and usually atthe point of insertion of the deltoid, in consequence of the powerfulaction of this muscle in raising and supporting the arm. The radiusand ulna are bent outward and twisted. The deformity is attributedby Sir. William Jenner to the fact that ricketty children support them-selves, while in the sitting posture, upon the palms of th
A treatise on the diseases of infancy and childhood . um, directedforward and a little upward. Careful examination shows, in somerachitic patients, thickening of the margins of the scapula, like that ofthe cranial bones. The humerus is occasionally bent, and usually atthe point of insertion of the deltoid, in consequence of the powerfulaction of this muscle in raising and supporting the arm. The radiusand ulna are bent outward and twisted. The deformity is attributedby Sir. William Jenner to the fact that ricketty children support them-selves, while in the sitting posture, upon the palms of the hands pressedupon the floor or couch. Supporting the weight of the body in thisway not only, in his opinion, causes bending of the ulna and radius, butalso aids in producing the deformities of the humerus and clavicle. Changes in Bones of Pelvis.—The deformities of the pelvic bones,resulting from rachitic softening, are, in the female infant, the most im-portant of any which the skeleton undergoes. They are produced by Fig. 11. Fig. 12. Fig. Kachitic deformities of the pelvis. (From specimens in the Wood Museum.) pressure from above of the abdominal organs, serving to widen the brimof the pelvis, and also by pressure of the spinal column, sustaining theweight of the trunk, shoulders, and head, pressing forwards the pro-montory of the sacrum, in the sitting posture, and thus diminishing theantero-posterior diameter of the pelvic brim. There is, moreover, two-fold pressure from below, that caused by the heads of the thigh-bones,in standing, and that exercised by the tuberosities of the ischia, in sit-ting. Both these forms of pressure have a tendency to narrow the out-let of the pelvis. Hence the marriage of the female who has beenrachitic in infancy may involve serious consequences. Many of the ANATOMICAL CHARACTERS. 125 tedious instrumental labors in the families of the city poor, whichseverely tax the patience and endurance of young practitioners, are at-tributable to
Size: 2587px × 966px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, bookidtreat, booksubjectchildren
