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Anatomy of the Pelvis
Published in Gowri Dorairajan, Management of Normal and High Risk Labour During Childbirth, 2022
Pubic arch is the conjoined inferior rami of ischium and pubis of the two sides form the pubic arch. The inferior borders define the subpubic angle. The width of the subpubic angle is ascertained by the distance between right and left ischial tuberosities during a per vaginal examination.
A to Z Entries
Published in Clare E. Milner, Functional Anatomy for Sport and Exercise, 2019
The pelvis is the junction between the trunk and the lower extremities. It supports the spine and rests on the lower limbs. The pelvis is strong and sturdy and is made up of four bones: the two hip bones, plus the sacrum and coccyx of the distal spine (Figure 18). The bones form a ring with a large aperture in the middle; in women, this aperture is the birth canal. The hip bones themselves are made up of three fused bones: the ilium, ischium, and pubis. The lumbar spine sits immediately on top of the sacrum and comprises five individual vertebrae. There are several differences in structure between the male and female pelvis. Most notably, the female pelvis has a wider and more rounded pubic arch.
Anatomy
Published in J. Richard Smith, Giuseppe Del Priore, Robert L. Coleman, John M. Monaghan, An Atlas of Gynecologic Oncology, 2018
Ernest F. Talarico, Jalid Sehouli, Giuseppe Del Priore, Werner Lichtenegger
These same landmarks are also useful in initiating a scalene node biopsy. An inguinal node dissection may be performed through different incisions provided that the operator recognizes the relationship of the nodes to the inguinal ligament. Tube thoracotomy and thoracocentesis require recognition of the location of the inferior scapula at the seventh and eighth rib. Finally, although the patient’s soft tissue dimensions are important, the truly limiting factor for most is the bony confine of the operative field. For instance, a large patient may have a wide and shallow pelvis, making the patient an acceptable candidate for a radical hysterectomy. This may be determined before the incision by noting the distance between the anterior iliac crests in relation to the distance from the crest to the ischial tubercle. Similarly, for vaginal procedures, emphasis should be placed on the distance between the ischial tubercles and the angle of the pubic arch. The best way to assess the patient preoperatively is by recognizing the significance of the bony and cutaneous landmarks of the operative field.
Could the bulbar urethral end location on the cystourethrogram predict the outcome after posterior urethroplasty for pelvic fracture urethral injury?
Published in Arab Journal of Urology, 2023
Ahmed M. Harraz, Adel Nabeeh, Ramy Elbaz, Abdalla Abdelhamid, Mohamed Tharwat, Amr A. Elbakry, Ahmed S. El-Hefnawy, Ahmed El-Assmy, Ahmed Mosbah, Mohamed H. Zahran
For this study, the BN and posterior urethra appearance in the CUG was reported but not included in the analysis. The relationship between the proximal end of the bulbar urethra in relation to the pubic arch ‘pubis symphysis (PS) and pubic rami’ was assigned a location either in zone A or zone B (Figure 1). Zone A is located distal to an imaginary line extending from the lower border of PS to a point midway between the two ischial tuberosities. On the other hand, zone B is located proximal to that line. When the bulbar urethral end location is in zone A, we assume that the pelvic injury was more superficial, minimal dissection is expected and a better outcome is awaited. On the other hand, zone B lies deep in relation to the pubic arch; hence, the urethral injury is anticipated to be deep in the pelvis and extensive dissection is expected and that might be reflected in the complexity of the surgery and the outcome.
Comparing the pelvis of Tibetan and Chinese Han women in rural areas of China: two population-based studies using coarsened exact matching
Published in Journal of Obstetrics and Gynaecology, 2022
Xiaojing Fan, Zhongliang Zhou, Martyn Stewart, Duolao Wang, Xin Lan, Shaonong Dang, Hong Yan
The assessment of the pelvis was divided into size and shape, as size is driven by the absolute pelvic dimensions (IS, IC, EC and TO) and shape is represented by relative pelvic dimensions. As one of the pelvic shapes, contracted pelvis was the focus of more attention because of the influence on delivery. Based on the external pelvic dimensions, three types of contracted pelvis can be defined, flat pelvis, funnel shaped pelvis and generally contracted pelvis. Flat pelvis was defined where the EC of the pelvis is less than 18 cm, and generally contracted pelvis was defined as 2 cm smaller dimension than normal values for the four pelvic dimension measures. Due to missing measurements for the angle of the pubic arch, in this study, the funnel shaped pelvis was defined as only TO being less than 8 cm (Bansal et al. 2011; Meng 2012).