A practical treatise on fractures and dislocations . ree folds ofcotton cloth, or with a single piece of soft flannel, or patent lint, andsecured in place with narrow and neatly cut cotton rollers. Bandagesof this width should never be torn, but carefully cut with scissors. CHAPTER XXVII. FRACTURES OF THE PELVIS, AND TRAUMATIC SEPARATIONSOF ITS SYMPHYSES. Development of the Os Innominatum.—This bone is formed fromeight centres, three of which are called primary, and five three primary centres belong respectively to the ilium, ischium,and pubes, and by their extension form eventua
A practical treatise on fractures and dislocations . ree folds ofcotton cloth, or with a single piece of soft flannel, or patent lint, andsecured in place with narrow and neatly cut cotton rollers. Bandagesof this width should never be torn, but carefully cut with scissors. CHAPTER XXVII. FRACTURES OF THE PELVIS, AND TRAUMATIC SEPARATIONSOF ITS SYMPHYSES. Development of the Os Innominatum.—This bone is formed fromeight centres, three of which are called primary, and five three primary centres belong respectively to the ilium, ischium,and pubes, and by their extension form eventually the greater portion PUBES. 335 of the innominatum. They have a common point of union in theacetabulum ; and the ischium unites with the pubes, also, by the junc-tion of their rami. These conjunctions occur usually between thefifteenth and twentieth years of life. The secondary centres do notbegin to ossify until the age of puberty, and may therefore properlybe considered as epiphyses. One forms the crest of the ilium; one Fig. 108. C f e j. f. Development of the os innominatum. (From Gray.) its anterior inferior spinous process; one forms the symphysis pubis;one the tuberosity of the ischium; while the fifth constitutes the centreof the bottom of the acetabulum. The epiphyses become joined tothe primary bones, or the bodies of the innominata, at about thetwenty-fifth year. § 1. Pubes. Lente, in his reports from the New York Hospital, mentions thecase of a young man, set. 18, who was crushed between a couple ofcars, in consequence of which he died two days after. The autopsydisclosed a separation at the symphysis pubis, unaccompanied withany other fracture. The right side was displaced backwards abouthalf an inch, so that the fingers could be passed between the was also a wound in the top of the bladder large enough toadmit the Similar accidents have been several times met with 1 Lente, New York Journ. Med., 2d ser., vol. iv. p. 286. 336 FRACTURES OF T
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