II. Efficacy
- Pelvimetry is a poor predictor of who will deliver vaginally and is not routinely performed nor recommended in the U.S.
III. Physiology: Caldwell-Moloy Classification
- Gynecoid Pelvis (50%)
- Pelvic brim is a transverse ellipse (nearly a circle)
- Most favorable for delivery
- Android Pelvis (Male type)
- Pelvic brim is triangular
- Convergent Side Walls (widest posteriorly)
- Prominent ischial spines
- Narrow subpubic arch
- More common in white women
- Anthropoid Pelvis
- Pelvic brim is an anteroposterior ellipse
- Gynecoid Pelvis turned 90 degrees
- Narrow ischial spines
- Much more common in black women
- Pelvic brim is an anteroposterior ellipse
- Platypelloid Pelvis (3%)
- Pelvic brim is transverse Kidney shape
- Flattened gynecoid shape
IV. Exam: Determination of an Adequate Pelvis
- Diagonal conjugate
- Distance from sacral promontory to Symphysis Pubis
- Approximate length of fingers introitus to Sacrum
- Adequate Diagonal conjugate > 11.5cm
- Images
- Intertuberous Diameter
- Distance between Ischial tuberosities
- Approximately width of fist
- Adequate Intertuberous Diameter > 10 cm
- Images
- Prominence of ischial spines
Images: Related links to external sites (from Bing)
Related Studies
| Definition (MSH) | Measurement of the dimensions and capacity of the pelvis. It includes cephalopelvimetry (measurement of fetal head size in relation to maternal pelvic capacity), a prognostic guide to the management of LABOR, OBSTETRIC associated with disproportion. |
| Concepts | Diagnostic Procedure (T060) |
| MSH | D010387 |
| ICD9 | 88.25 |
| SnomedCT | 75014006 |
| CPT | 74710 |
| English | Pelvimetries, Pelvimetry, pelvimetry, Pelvimetry (procedure) |
| Swedish | Bäckenmätning |
| Czech | pelvimetrie |
| Finnish | Pelvimetria |
| Russian | PEL'VIMETRIIA, ПЕЛЬВИМЕТРИЯ |
| Polish | Pelwimetria |
| Norwegian | Bekkenmåling, Pelvimetri |
| Spanish | pelvimetría (procedimiento), pelvimetría, Pelvimetría |
| French | Pelvimétrie |
| German | Pelvimetrie |
| Italian | Pelvimetria |
| Dutch | Pelvimetrie |
| Portuguese | Pelvimetria |
