

PELVIMETER 



1035 



Pelvimeter (pel-vim' -et-er) [pelvis, pelvis; fierpov, a 

 measure]. An instrument for measuring the pelvic 

 dimensions. 



Pelvimeter. 



lvimetry (pel-vim' '-et-re) [ pelvis, pelvis ; fierpov, 

 leasure]. The estimation of the dimensions of the 

 elvis. P., Combined, a combination of external 

 id internal pelvimetry. P., Digital, pelvimetry 

 t>y means of the hand. P., External, measure- 

 nent of the external diameters of the pelvis, by 

 rhich to estimate the dimensions of the internal 

 parts. P., Internal, measurement of the internal 

 dimensions of the pelvis by the hand or by the pelvi- 

 meter. See Pelvis. 



Table of Measurements of the Female Pelvis Covered 

 with the Soft Parts. 



Between iliac spines 26 cm. 



" '' crests 29 " 



External conjugate diameter, 20^ " 



Internal " diagonal 12JJ " 



True conjugate, estimated 11 M 



Right diagonal, 22 " 



Left " 22 " 



Between trochanters, 31 " 



Circumference of pelvis 90 " 



Pelvimyon (pel-vim-i'-on) [pelvis, a basin ; fivuv, a 

 cluster of muscles] . Any myon of the pelvic arch. 



Pelviotomy (pel-ve-ot'-o-me) [pelvis, pelvis ; tout/, a 

 cutting]. Section or cutting of the bones of the pelvis, 

 especially the division of the symphysis pubis in case 

 of difficult labor. 



Pelviperitonitis ( pel-vip-er-it-on-i'-tis). Synonym of 

 Pell 'eo per it on it is . 



Pelvis (pel' -vis) [pelvis, a basin]. The basin-like cav- 

 ity of the inferior part of the trunk containing the 

 rectum, and the urinary bladder and genital organs, 



nate 



Female Pelvis, seen from the Front. 



bounded anteriorly and laterally by the innomi- 

 bones, posteriorly by the sacrum and coccyx, and 



PELVIS 



inferiorly by the floor of the pelvis. P. aequabiliter 

 justo-major, one equally enlarged in all diameters, 

 with preservation of the normal proportions. It 

 complicates labor by rendering it too pre- 

 cipitate. P. aequabiliter justo -minor, a 

 normally proportioned pelvis, but with all 

 its diameters reduced. P., Anatomic. See 

 P., Static. P., Axis of (of inlet or outlet), 

 a perpendicular to the middle of the antero- 

 posterior diameter. P., Beaked, one in 

 which the pubic bones are compressed later- 

 ally so as to approach each other, and are 

 pushed forward. It is seen in the osteo- 

 malacic pelvis P., Bony, the framework 

 of the pelvis. See Pelvis. P., Brim of, the 

 entrance to the pelvic cavity, variously called 

 the inlet, superior strait, margin, or isth- 

 mus. Capuron, Cardinal Points of, four fixed 

 points of the pelvic inlet, the two ileo-pectineal 



Female Pelvis, viewed in the axis of the Brim. 

 Showing the diameters of the superior strait. 



Outlet of Pelvis. 



Antero-posterior and transverse diameters of outlet seen from 



below. 



eminences anteriorly, and the two sacro-iliac joints 

 posteriorly. P. cerea, an osteomalacic pelvis in 

 which the bones are very soft. P., Cordate, one in 

 which the inlet is heart-shaped. P., Cordiform, an 

 abnormal pelvis in which the inlet is shaped like the 

 heart of playing cards. P., Coxalgic, a pelvis de- 

 formed as the result of hip-disease. P., Deformities 

 of. See Classification at end of this article. P., Di- 

 ameters of (of the inlet), the antero-posterior (sacro- 

 pmbic, or conjugate) , from the upper edge of the pro- 

 montory of the sacrum to a point an eighth of an inch 

 below the upper border of the pubic symphysis ; it 



