A textbook of obstetrics . s erect, is fifty-five degrees, and of the inferior strait,ten degrees. The inclination <»f the pelvis, however, changes withchanges of posture. It disappears in a squatting or sitting posture,and is increased if the individual leans backward. The greaterthe inclination of the pelvis, the more the axis of the superiorstrail diverges from the long axis of the uterine cavity, and c<m-sequently the greater must be the divergence in direction oi thepresenting part from that «.f the rest of the fetal body when theformer engages in the superior .strait. Much stress w
A textbook of obstetrics . s erect, is fifty-five degrees, and of the inferior strait,ten degrees. The inclination <»f the pelvis, however, changes withchanges of posture. It disappears in a squatting or sitting posture,and is increased if the individual leans backward. The greaterthe inclination of the pelvis, the more the axis of the superiorstrail diverges from the long axis of the uterine cavity, and c<m-sequently the greater must be the divergence in direction oi thepresenting part from that «.f the rest of the fetal body when theformer engages in the superior .strait. Much stress was once laid up<»n this , by placing a woman upon her side andflexing the thighs upon the trunk, the inclination of the pelvis ismade practically to disappear. The obliquity of the pelvis, therefore, need not be seriously considered, as .1 rule, 111 labor,I,,it the habitual inclination of the pelvis .is the woman stands ereel must betaken into account if one would understand the THE ANATOMY OF THE PELVIS. 23. Fig. 5.—The inclination of the pelvis. pelvic deformities of rachitis, lordosis, kyphosis, spondylolis-thesis, and osteomalacia ; some of the anomalies of labor inthese pelvic deformities ; and the abnormal relations of the ex-
Size: 1286px × 1943px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookidtex, booksubjectobstetrics
