Knowledge

Pelvimetry

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A review in 2003 came to the conclusion that pelvimetry does not change the management of pregnant women, and recommended that all women should be allowed a trial of labor regardless of pelvimetry results. It considered routine performance of pelvimetry to be a waste of time, a potential liability,
47:, which is when the capacity of the pelvis is inadequate to allow the fetus to negotiate the birth canal. However, clinical evidence indicate that all pregnant women should be allowed a trial of labor regardless of pelvimetry results. 479: 59:, which is when the capacity of the pelvis is inadequate to allow the fetus to negotiate the birth canal. However, a woman's pelvis loosens up before birth (with the help of hormones). 82:
The terms used in pelvimetry are commonly used in obstetrics. Clinical pelvimetry attempts to assess the pelvis by clinical examination. Pelvimetry can also be done by
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Traditional obstetrical services relied heavily on pelvimetry in the conduct of delivery in order to decide if natural or operative
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in 2017 found that there was too little evidence to show whether X-ray pelvimetry is beneficial and safe when the baby is in
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Blackadar CS, Viera AJ (2004). "A retrospective review of performance and utility of routine clinical pelvimetry".
1815: 1759: 1473: 1523: 634:"Pelvimetry by Three-Dimensional Computed Tomography in Non-Pregnant Multiparous Women Who Delivered Vaginally" 585:"Pelvimetry by Three-Dimensional Computed Tomography in Non-Pregnant Multiparous Women Who Delivered Vaginally" 1548: 1455: 957: 1553: 1513: 1012: 106: 56: 44: 1382: 1193: 1166: 387:. Women whose pelvises were deemed too small received caesarean sections instead of birthing naturally. 1588: 1425: 1183: 1108: 1078: 1638: 1250: 990: 914: 134: 1000: 430: 1573: 1438: 1176: 937: 904: 863: 249: 1692: 1508: 1073: 952: 217: 781: 531:"Pelvimetry for fetal cephalic presentations at or near term for deciding on mode of delivery" 397:: Ideal shape, with round to slightly oval (obstetrical inlet slightly less transverse) inlet. 1687: 1543: 1498: 1493: 1488: 1483: 1312: 1265: 1260: 1228: 1048: 734: 302: 67: 1794: 1733: 1593: 1450: 1374: 1282: 1272: 1068: 969: 947: 287: 260: 8: 1697: 1608: 1563: 1463: 1322: 1240: 1223: 1188: 1043: 964: 924: 409:: the widest transverse diameter is less than the anteroposterior (obstetrical) diameter. 1583: 1478: 1443: 1302: 1151: 1063: 1028: 909: 856: 829: 812: 762: 712: 695: 666: 633: 609: 584: 555: 530: 210: 153: 696:"Magnetic resonance pelvimetry for trial of labour after a previous caesarean section" 1662: 1538: 1277: 1218: 1058: 1038: 1033: 834: 791: 748: 740: 738: 717: 671: 653: 614: 560: 511: 435: 185: 169: 1633: 1245: 1118: 1113: 1007: 824: 707: 661: 645: 604: 596: 550: 546: 542: 455: 384: 1820: 1682: 1397: 1292: 1161: 1053: 942: 891: 450: 286:. However, the coccyx is normally pushed away during childbirth by laxity in the 255:
Same, but may require minor side-to-side scrolling to visualize both end points.
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Same, but may require minor side-to-side scrolling to visualize both end points.
63: 358: 1728: 1643: 1349: 1297: 995: 348: 1809: 1738: 1628: 1417: 1392: 1144: 985: 899: 657: 240: 229: 146: 403:: triangular inlet, and prominent ischial spines, more angulated pubic arch. 1774: 1354: 1307: 1255: 1213: 848: 838: 721: 675: 618: 564: 515: 440: 370: 174: 128: 122: 40: 1764: 1359: 1317: 1235: 314: 222: 83: 649: 600: 1769: 1287: 1088: 883: 425: 380: 266: 191: 879: 445: 271: 196: 1648: 1364: 785: 390:
Traditional obstetrics have characterized four types of pelvises:
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Salk, Ismail; Cetin, Ali; Salk, Sultan; Cetin, Meral (2016).
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Hacker & Moore's Essentials of Obstetrics and Gynecology
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can be used for estimating the main pelvimetry parameters:
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obstetric anteroposterior diameter of the pelvic outlet
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Comparison between an android (left) and a gynecoid
529:Pattinson RC, Cuthbert A, Vannevel V (March 2017). 631: 582: 415:: Flat inlet with shortened obstetrical diameter. 1807: 227:The line between the closest bone points of the 183:The line between the closest bony points of the 497: 495: 493: 693: 689: 687: 685: 501: 864: 810: 878: 786:Wayne R. Cohen, Emanuel A. Friedman (2011). 767:: CS1 maint: multiple names: authors list ( 490: 682: 578: 576: 574: 535:The Cochrane Database of Systematic Reviews 522: 871: 857: 788:Labor and Delivery Care: A Practical Guide 343: 828: 711: 665: 608: 583:Salk I, Cetin A, Salk S, Cetin M (2016). 554: 817:The Yale Journal of Biology and Medicine 747:(5 ed.). Elsevier Health Sciences. 700:Sultan Qaboos University Medical Journal 694:Gowri V, Jain R, Rizvi S (August 2010). 571: 335: 55:Theoretically, pelvimetry may identify 1808: 852: 383:was possible or if and when to use a 1703:Psychiatric disorders of childbirth 13: 357: 347: 14: 1832: 39:is the measurement of the female 1708:Postpartum physiological changes 1408:Postpartum physiological changes 933:Assisted reproductive technology 308: 301: 248: 245:Sagittal pelvic outlet diameter 216: 209: 168: 157:, at widest transverse distance. 140: 133: 43:. It can theoretically identify 16:Measurement of the female pelvis 1760:Adaptation to extrauterine life 319:The closest bony points of the 258:The closest bony points of the 74:and an unnecessary discomfort. 1403:Maternal physiological changes 804: 775: 728: 625: 547:10.1002/14651858.CD000161.pub2 473: 1: 958:partner-assisted reproduction 466: 107:Maximum intensity projections 77: 50: 485:Dorland's Medical Dictionary 57:cephalo-pelvic disproportion 45:cephalo-pelvic disproportion 30:measurement of female pelvis 7: 1194:Traditional birth attendant 638:Polish Journal of Radiology 589:Polish Journal of Radiology 419: 127:Transverse diameter of the 10: 1837: 1426:Brain health and pollution 813:"Yale - The Pelvic Survey" 743:, Calvin J. Hobel (2009). 331: 278:, to distinguish from the 274:. This is also called the 1787: 1752: 1716: 1670: 1661: 1639:Chorionic villus sampling 1621: 1416: 1373: 1342: 1335: 1202: 1127: 1096: 1087: 1021: 991:Obstetric ultrasonography 978: 923: 915:Pre-conception counseling 890: 790:. John Wiley & Sons. 368: 239: 205: 121: 102: 26: 21: 1529:Intrahepatic cholestasis 431:List of obstetric topics 1599:Motor vehicle emissions 1460:Concomitant conditions 1434:environmental toxicants 1177:Auxiliary nurse midwife 938:artificial insemination 905:Natural family planning 298:Intertuberous diameter 282:one which includes the 1816:Obstetrical procedures 1693:Postpartum confinement 953:in vitro fertilisation 811:Herbert Thoms (1946). 363: 353: 341: 206:Interspinous distance 1688:Postpartum depression 1569:Pruritic folliculitis 1313:Unassisted childbirth 361: 351: 339: 235:9.5 to 11.5 cm. 68:cephalic presentation 1795:Gravidity and parity 1775:Congenital disorders 1734:Lactation consultant 1604:Pre-existing disease 1283:Childbirth positions 1273:Rupture of membranes 970:Unintended pregnancy 948:fertility medication 321:ischial tuberosities 288:sacrococcygeal joint 261:sacrococcygeal joint 165:Obstetric conjugate 160:13 to 14.5 cm. 95:3D-rendered CT scans 1698:Sex after pregnancy 1505:Endocrine diseases 1451:Prenatal depression 1323:Placental expulsion 1241:Uterine contraction 1224:cervical effacement 965:Fertility awareness 739:Neville F. Hacker, 650:10.12659/PJR.896380 601:10.12659/PJR.896380 154:iliopectineal lines 1474:Hypercoagulability 1303:Natural childbirth 1152:Postterm pregnancy 910:Male contraceptive 364: 354: 342: 201:10 to 12 cm. 1803: 1802: 1788:Obstetric history 1783: 1782: 1744:Confinement nanny 1657: 1656: 1524:Acute fatty liver 1331: 1330: 1219:cervical dilation 741:Joseph C. Gambone 436:Pelvic Bone Width 377: 376: 329: 328: 186:sacral promontory 34: 33: 1828: 1668: 1667: 1634:Cardiotocography 1340: 1339: 1246:Vaginal delivery 1119:Nesting instinct 1094: 1093: 1079:Rudimentary horn 1008:Prenatal testing 873: 866: 859: 850: 849: 843: 842: 832: 808: 802: 801: 779: 773: 772: 766: 758: 732: 726: 725: 715: 691: 680: 679: 669: 629: 623: 622: 612: 580: 569: 568: 558: 541:(12): CD000161. 526: 520: 519: 499: 488: 477: 456:Sacroiliac joint 385:cesarean section 381:vaginal delivery 344: 312: 305: 293:9.5 to 11.5 cm. 252: 220: 213: 172: 144: 137: 117:Normal measures 100: 99: 19: 18: 1836: 1835: 1831: 1830: 1829: 1827: 1826: 1825: 1806: 1805: 1804: 1799: 1779: 1748: 1712: 1683:Postpartum care 1653: 1617: 1520:Liver diseases 1514:Thyroid disease 1412: 1398:Gestational age 1369: 1327: 1293:Labor induction 1198: 1189:Perinatal nurse 1162:Birth attendant 1123: 1083: 1017: 1013:Medical imaging 974: 943:fertility fraud 919: 886: 877: 847: 846: 809: 805: 798: 780: 776: 760: 759: 755: 733: 729: 692: 683: 630: 626: 581: 572: 527: 523: 504:Family Medicine 500: 491: 478: 474: 469: 451:Pubic symphysis 422: 334: 313: 221: 173: 145: 80: 64:Cochrane review 53: 17: 12: 11: 5: 1834: 1824: 1823: 1818: 1801: 1800: 1798: 1797: 1791: 1789: 1785: 1784: 1781: 1780: 1778: 1777: 1772: 1767: 1762: 1756: 1754: 1750: 1749: 1747: 1746: 1741: 1736: 1731: 1729:Health visitor 1726: 1720: 1718: 1714: 1713: 1711: 1710: 1705: 1700: 1695: 1690: 1685: 1680: 1674: 1672: 1665: 1659: 1658: 1655: 1654: 1652: 1651: 1646: 1644:Nonstress test 1641: 1636: 1631: 1625: 1623: 1619: 1618: 1616: 1615: 1614: 1613: 1612: 1611: 1606: 1601: 1596: 1591: 1586: 1578: 1577: 1576: 1571: 1566: 1560:Skin diseases 1558: 1557: 1556: 1551: 1546: 1541: 1533: 1532: 1531: 1526: 1518: 1517: 1516: 1511: 1503: 1502: 1501: 1496: 1491: 1486: 1476: 1471: 1466: 1458: 1453: 1448: 1447: 1446: 1441: 1436: 1428: 1422: 1420: 1414: 1413: 1411: 1410: 1405: 1400: 1395: 1390: 1385: 1379: 1377: 1371: 1370: 1368: 1367: 1362: 1357: 1352: 1350:Amniotic fluid 1346: 1344: 1337: 1333: 1332: 1329: 1328: 1326: 1325: 1320: 1315: 1310: 1305: 1300: 1298:Multiple birth 1295: 1290: 1285: 1280: 1275: 1270: 1269: 1268: 1263: 1258: 1248: 1243: 1238: 1233: 1232: 1231: 1226: 1221: 1206: 1204: 1200: 1199: 1197: 1196: 1191: 1186: 1181: 1180: 1179: 1169: 1164: 1159: 1154: 1149: 1148: 1147: 1137: 1131: 1129: 1125: 1124: 1122: 1121: 1116: 1111: 1106: 1104:Bradley method 1100: 1098: 1091: 1085: 1084: 1082: 1081: 1076: 1071: 1066: 1061: 1056: 1051: 1046: 1041: 1036: 1031: 1025: 1023: 1019: 1018: 1016: 1015: 1010: 1005: 1004: 1003: 996:Pregnancy test 993: 988: 982: 980: 976: 975: 973: 972: 967: 962: 961: 960: 955: 950: 945: 940: 929: 927: 921: 920: 918: 917: 912: 907: 902: 896: 894: 888: 887: 876: 875: 868: 861: 853: 845: 844: 823:(2): 171–179. 803: 796: 774: 753: 727: 681: 624: 570: 521: 489: 471: 470: 468: 465: 464: 463: 458: 453: 448: 443: 438: 433: 428: 421: 418: 417: 416: 410: 404: 398: 375: 374: 366: 365: 355: 333: 330: 327: 326: 323: 317: 306: 299: 295: 294: 291: 256: 253: 246: 243: 237: 236: 233: 230:ischial spines 225: 214: 207: 203: 202: 199: 181: 178: 177:, 20 mm thick 166: 162: 161: 158: 149: 138: 131: 125: 119: 118: 115: 112: 109: 104: 79: 76: 52: 49: 32: 31: 28: 24: 23: 15: 9: 6: 4: 3: 2: 1833: 1822: 1819: 1817: 1814: 1813: 1811: 1796: 1793: 1792: 1790: 1786: 1776: 1773: 1771: 1768: 1766: 1763: 1761: 1758: 1757: 1755: 1751: 1745: 1742: 1740: 1739:Monthly nurse 1737: 1735: 1732: 1730: 1727: 1725: 1722: 1721: 1719: 1715: 1709: 1706: 1704: 1701: 1699: 1696: 1694: 1691: 1689: 1686: 1684: 1681: 1679: 1676: 1675: 1673: 1669: 1666: 1664: 1660: 1650: 1647: 1645: 1642: 1640: 1637: 1635: 1632: 1630: 1629:Amniocentesis 1627: 1626: 1624: 1620: 1610: 1607: 1605: 1602: 1600: 1597: 1595: 1592: 1590: 1589:Vaginal flora 1587: 1585: 1582: 1581: 1579: 1575: 1572: 1570: 1567: 1565: 1562: 1561: 1559: 1555: 1552: 1550: 1547: 1545: 1542: 1540: 1537: 1536: 1534: 1530: 1527: 1525: 1522: 1521: 1519: 1515: 1512: 1510: 1507: 1506: 1504: 1500: 1497: 1495: 1492: 1490: 1487: 1485: 1482: 1481: 1480: 1479:Substance use 1477: 1475: 1472: 1470: 1467: 1465: 1462: 1461: 1459: 1457: 1454: 1452: 1449: 1445: 1442: 1440: 1437: 1435: 1432: 1431: 1429: 1427: 1424: 1423: 1421: 1419: 1415: 1409: 1406: 1404: 1401: 1399: 1396: 1394: 1393:Fundal height 1391: 1389: 1386: 1384: 1381: 1380: 1378: 1376: 1372: 1366: 1363: 1361: 1358: 1356: 1353: 1351: 1348: 1347: 1345: 1341: 1338: 1334: 1324: 1321: 1319: 1316: 1314: 1311: 1309: 1306: 1304: 1301: 1299: 1296: 1294: 1291: 1289: 1286: 1284: 1281: 1279: 1276: 1274: 1271: 1267: 1264: 1262: 1259: 1257: 1254: 1253: 1252: 1249: 1247: 1244: 1242: 1239: 1237: 1234: 1230: 1227: 1225: 1222: 1220: 1217: 1216: 1215: 1211: 1208: 1207: 1205: 1201: 1195: 1192: 1190: 1187: 1185: 1182: 1178: 1175: 1174: 1173: 1170: 1168: 1165: 1163: 1160: 1158: 1155: 1153: 1150: 1146: 1145:Preterm birth 1143: 1142: 1141: 1138: 1136: 1133: 1132: 1130: 1126: 1120: 1117: 1115: 1112: 1110: 1109:Hypnobirthing 1107: 1105: 1102: 1101: 1099: 1095: 1092: 1090: 1086: 1080: 1077: 1075: 1072: 1070: 1067: 1065: 1062: 1060: 1057: 1055: 1052: 1050: 1047: 1045: 1042: 1040: 1037: 1035: 1032: 1030: 1027: 1026: 1024: 1020: 1014: 1011: 1009: 1006: 1002: 999: 998: 997: 994: 992: 989: 987: 986:3D ultrasound 984: 983: 981: 977: 971: 968: 966: 963: 959: 956: 954: 951: 949: 946: 944: 941: 939: 936: 935: 934: 931: 930: 928: 926: 922: 916: 913: 911: 908: 906: 903: 901: 900:Birth control 898: 897: 895: 893: 889: 885: 881: 874: 869: 867: 862: 860: 855: 854: 851: 840: 836: 831: 826: 822: 818: 814: 807: 799: 797:9781119971542 793: 789: 783: 778: 770: 764: 756: 754:9781437725162 750: 746: 742: 736: 731: 723: 719: 714: 709: 705: 701: 697: 690: 688: 686: 677: 673: 668: 663: 659: 655: 651: 647: 643: 639: 635: 628: 620: 616: 611: 606: 602: 598: 594: 590: 586: 579: 577: 575: 566: 562: 557: 552: 548: 544: 540: 536: 532: 525: 517: 513: 509: 505: 498: 496: 494: 487: 486: 481: 476: 472: 462: 459: 457: 454: 452: 449: 447: 444: 442: 439: 437: 434: 432: 429: 427: 424: 423: 414: 411: 408: 405: 402: 399: 396: 393: 392: 391: 388: 386: 382: 372: 367: 362:Female pelvis 360: 356: 350: 346: 345: 338: 325:10 to 12 cm. 324: 322: 318: 316: 311: 307: 304: 300: 297: 296: 292: 289: 285: 281: 277: 273: 269: 268: 263: 262: 257: 254: 251: 247: 244: 242: 241:Pelvic outlet 238: 234: 232: 231: 226: 224: 219: 215: 212: 208: 204: 200: 198: 194: 193: 188: 187: 182: 179: 176: 171: 167: 164: 163: 159: 156: 155: 150: 148: 147:Coronal plane 143: 139: 136: 132: 130: 126: 124: 120: 116: 113: 110: 108: 105: 101: 98: 96: 91: 89: 85: 75: 71: 69: 65: 60: 58: 48: 46: 42: 38: 29: 25: 20: 1469:Hypertension 1456:Immunization 1439:in pregnancy 1355:Amniotic sac 1308:Silent birth 1251:Presentation 1214:Bishop score 1209: 1184:Obstetrician 1074:Interstitial 1001:home testing 820: 816: 806: 787: 777: 744: 730: 706:(2): 210–4. 703: 699: 641: 637: 627: 592: 588: 538: 534: 524: 510:(7): 505–7. 507: 503: 483: 480:"pelvimetry" 475: 441:Human pelvis 413:Platypelloid 412: 406: 400: 394: 389: 378: 320: 279: 275: 270:next to the 265: 259: 228: 195:next to the 190: 184: 175:Median plane 152: 129:pelvic inlet 123:Pelvic inlet 92: 81: 72: 61: 54: 36: 35: 1765:Apgar score 1549:Hepatitis C 1535:Infections 1375:Development 1360:Endometrium 1318:Water birth 1236:Bloody show 1167:Men's roles 1097:Preparation 1049:Heterotopic 644:: 219–227. 352:Male pelvis 315:Axial plane 223:Axial plane 111:Thin slices 84:radiography 1810:Categories 1770:Child care 1663:Postpartum 1622:Procedures 1574:Dermatoses 1430:Nutrition 1288:Home birth 1210:Pelvimetry 1089:Childbirth 1069:Unintended 925:Conception 884:childbirth 595:: 219–27. 467:References 426:Childbirth 407:Anthropoid 340:Pelvimeter 267:pubic bone 192:pubic bone 114:End points 78:Components 51:Indication 37:Pelvimetry 22:Pelvimetry 1278:Caesarean 1044:Abdominal 880:Pregnancy 763:cite book 658:0137-7183 446:Pregnancy 373:(right). 272:symphysis 197:symphysis 103:Parameter 93:Low-dose 1671:Maternal 1649:Abortion 1594:Bleeding 1544:COVID-19 1509:Diabetes 1494:Cannabis 1444:prenatal 1365:Placenta 1336:Prenatal 1266:shoulder 1261:cephalic 1229:position 1203:Delivery 1064:Postterm 1029:Cervical 892:Planning 839:20285601 782:Page 239 722:21509231 676:27231494 619:27231494 565:28358979 516:15243832 420:See also 395:Gynecoid 280:anatomic 264:and the 189:and the 1580:Others 1554:Malaria 1499:Opioids 1489:Alcohol 1484:Smoking 1343:Anatomy 1172:Midwife 1140:Newborn 1059:Ovarian 1039:Ectopic 1034:Cryptic 979:Testing 830:2602099 735:Page 94 713:3074700 667:4865272 610:4865272 556:6464150 401:Android 332:History 27:Purpose 1821:Pelvis 1753:Infant 1678:Lochia 1464:Anemia 1383:Embryo 1256:breech 1135:Mother 1114:Lamaze 837:  827:  794:  751:  720:  710:  674:  664:  656:  617:  607:  563:  553:  514:  461:Sacrum 371:pelvis 284:coccyx 41:pelvis 1724:Doula 1717:Roles 1609:Sleep 1584:Drugs 1564:Lupus 1388:Fetus 1157:Doula 1128:Roles 1054:Molar 1022:Types 1418:Care 882:and 835:PMID 792:ISBN 784:in: 769:link 749:ISBN 737:in: 718:PMID 672:PMID 654:ISSN 615:PMID 561:PMID 512:PMID 151:The 86:and 1539:HIV 825:PMC 708:PMC 662:PMC 646:doi 605:PMC 597:doi 551:PMC 543:doi 482:at 88:MRI 1812:: 1212:/ 833:. 821:19 819:. 815:. 765:}} 761:{{ 716:. 704:10 702:. 698:. 684:^ 670:. 660:. 652:. 642:81 640:. 636:. 613:. 603:. 593:81 591:. 587:. 573:^ 559:. 549:. 537:. 533:. 508:36 506:. 492:^ 290:. 90:. 70:. 62:A 872:e 865:t 858:v 841:. 800:. 771:) 757:. 724:. 678:. 648:: 621:. 599:: 567:. 545:: 539:3 518:.

Index

pelvis
cephalo-pelvic disproportion
cephalo-pelvic disproportion
Cochrane review
cephalic presentation
radiography
MRI
3D-rendered CT scans
Maximum intensity projections
Pelvic inlet
pelvic inlet


Coronal plane
iliopectineal lines

Median plane
sacral promontory
pubic bone
symphysis


Axial plane
ischial spines
Pelvic outlet

sacrococcygeal joint
pubic bone
symphysis
coccyx

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