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Seminars in Roentgenology Jul 2016
Review
Topics: Acetabulum; Humans; Pelvis; Radiography; Tomography, X-Ray Computed
PubMed: 27287955
DOI: 10.1053/j.ro.2016.03.002 -
Journal of Clinical Neurophysiology :... Aug 2014
Topics: Electrophysiology; Humans; Lumbar Vertebrae; Monitoring, Intraoperative; Pelvis
PubMed: 25083840
DOI: 10.1097/WNP.0000000000000081 -
Acta Obstetricia Et Gynecologica... Aug 2021Maternal pelvic capacity plays a major role during childbirth because the passage of the fetus through the bony birth canal enables vaginal birth. Maternal birthing...
INTRODUCTION
Maternal pelvic capacity plays a major role during childbirth because the passage of the fetus through the bony birth canal enables vaginal birth. Maternal birthing position may influence pelvic capacity because upright positions optimize capacity, possibly due to free movement of the pelvic joints. Herein, pelvic capacity was assessed by comparing changes in pelvic dimensions across pregnancy and in three birthing positions.
MATERIAL AND METHODS
This diagnostic imaging study of 50 pregnant women was conducted at Aarhus University Hospital, Denmark. Pelvic measurements were obtained with 1.5 T magnetic resonance pelvimetry during gestational weeks 20 and 32, in three birthing positions: kneeling squat, semi-lithotomy and supine. Pelvic capacity was compared between gestational weeks and positions.
RESULTS
In all three positions there is an overall increase in pelvic capacity from gestational week 20-32 at both the pelvic inlet and outlet. Comparing pelvic capacity at gestational week 32 between the semi-lithotomy and supine positions revealed that the pelvic inlet was larger in the supine position, whereas the mean pelvic outlet was 0.2 cm (p < 0.001) larger in the semi-lithotomy position. Likewise, the pelvic inlet was larger in the supine than in the kneeling squat position. Shifting from supine to kneeling squat position increased the midplane and pelvic outlet dimensions by up to 1 cm (p < 0.001).
CONCLUSIONS
The finding herein of an increased pelvic capacity as the pregnancy progresses is novel. Further, the results indicate that the supine position is optimal for increasing pelvic inlet size, whereas the semi-lithotomy and kneeling squat positions are optimal for increasing mid- and outlet-pelvic capacities.
Topics: Adult; Delivery, Obstetric; Female; Humans; Magnetic Resonance Imaging; Patient Positioning; Pelvis; Pregnancy; Pregnant Women; Reference Values; Young Adult
PubMed: 33991336
DOI: 10.1111/aogs.14168 -
Anatomia, Histologia, Embryologia Jan 2020This study was carried out to determine the morphometric values of the pelvic cavity, the cranial and caudal pelvic aperture by three-dimensional (3D) reconstruction of...
This study was carried out to determine the morphometric values of the pelvic cavity, the cranial and caudal pelvic aperture by three-dimensional (3D) reconstruction of the images obtained by computed tomography in adult Van Cats and to show the differences between these indicators in both genders. A total of 16 adult Van Cats, eight male and eight female, were used in the study. Animals were anesthetized with ketamine-xylazine combination and were scanned by computerized tomography. Images of the pelvic cavity were obtained. Three-dimensional reconstruction of the pelvis was performed with three-dimensional modelling program. Measurements of the diameters of the pelvic cavity, the cranial and caudal pelvic aperture were calculated from these images, and statistical analyzes were performed. Three-dimensional modelling of the pelvic cavity of Van Cats were examined between males and females. The results showed that there were significant (p < .05) differences between measurement of the pelvic inclination, the medial transverse diameter, the caudal transverse diameter and the angle between ischiatic arch. In addition, the correlations between age and weight were found statistically significant (p < .05) with the dorsal transverse diameter, the intermediate transverse diameter and the caudal transverse diameter in males. On the other hand, the correlations of age were statistically significant (p < .01) with the cranial pelvic aperture and the caudal pelvic aperture in females. In conclusion, some biometric values of pelvic cavity were observed to be statistically different in Van Cats.
Topics: Animals; Cats; Female; Imaging, Three-Dimensional; Male; Pelvis; Tomography, X-Ray Computed
PubMed: 31486129
DOI: 10.1111/ahe.12484 -
Seminars in Ultrasound, CT, and MR Jun 2017Inflammatory arthropathy predominantly affecting the axial skeleton can cause pain, stiffness, disability, and ankylosis. This article discusses the use of... (Review)
Review
Inflammatory arthropathy predominantly affecting the axial skeleton can cause pain, stiffness, disability, and ankylosis. This article discusses the use of cross-sectional imaging in the domain of inflammatory pelvic and axial arthropathy highlighting the key distinguishing features of common known diseases and their differential diagnoses.
Topics: Diagnostic Imaging; Humans; Inflammation; Joint Diseases; Pelvic Pain; Pelvis
PubMed: 28705372
DOI: 10.1053/j.sult.2016.11.007 -
Diagnostic and Interventional Radiology... 2017This pictorial review aims to discuss and illustrate the up-to-date use of preprocedural magnetic resonance imaging (MRI) in selecting patients and planning uterine... (Review)
Review
This pictorial review aims to discuss and illustrate the up-to-date use of preprocedural magnetic resonance imaging (MRI) in selecting patients and planning uterine artery embolization (UAE). The merits of magnetic resonance angiography (MRA) in demonstrating the pelvic vasculature to guide UAE are highlighted. MRI features of fibroids and their main differential diagnoses are presented. Fibroid characteristics, such as location, size, and enhancement, which may impact patient selection and outcome, are presented based on recent literature. Pelvic arterial anatomy relevant to UAE, including vascular variants are illustrated, with conventional angiography and MRA imaging correlation. MRA preprocedural determination of the optimal projection angles for uterine artery catheterization is straightforward and constitutes an important strategy to minimize ionizing radiation exposure during UAE. A reporting template for MRI/MRA preassessement of UAE for fibroid treatment is provided.
Topics: Diagnosis, Differential; Female; Humans; Leiomyoma; Magnetic Resonance Angiography; Magnetic Resonance Imaging; Pelvis; Treatment Outcome; Uterine Artery Embolization
PubMed: 28163256
DOI: 10.5152/dir.2016.16623 -
Clinical Obstetrics and Gynecology Mar 2017Ultrasound (US) has transformed the fertility evaluation. With 1 consultation, blood work and 1 to 2 USs, the female fertility status can be fully evaluated. The initial...
Ultrasound (US) has transformed the fertility evaluation. With 1 consultation, blood work and 1 to 2 USs, the female fertility status can be fully evaluated. The initial US is best done early in the follicular cycle to evaluate the pelvic anatomy and ovarian reserve. A three-dimensional US is important to evaluate for uterine anomalies and color Doppler for any masses. A mid-cycle saline infusion sonohysterogram assesses the endometrial cavity better than a hysterosalpingogram as it identifies the cause of any filling defects. By concurrently adding contrast or agitated saline, tubal patency can be tested. This US-based approach reliably, efficiently, and cost-effectively assesses female infertility.
Topics: Female; Humans; Hysterosalpingography; Imaging, Three-Dimensional; Infertility, Female; Pelvis; Ultrasonography; Uterus
PubMed: 28106643
DOI: 10.1097/GRF.0000000000000268 -
Zhonghua Wei Chang Wai Ke Za Zhi =... Mar 2023The treatment of locally advanced rectal cancer (LARC) or locally recurrent rectal cancer (LRRC) has been a difficulty and challenge in the field of advanced rectal...
The treatment of locally advanced rectal cancer (LARC) or locally recurrent rectal cancer (LRRC) has been a difficulty and challenge in the field of advanced rectal cancer, while pelvic exenteration (PE), as an important way to potentially achieve radical treatment of LARC and LRRC, has been shown to significantly improve the long-term prognosis of patients. The implementation of PE surgery requires precise assessment of the extent of invasion of LARC or LRRC and adequate preoperative preparation through multidisciplinary consultation before surgery. The lateral pelvis involves numerous tissues, blood vessels, and nerves, and resection is most difficult, and the ureteral and Marcille triangle approaches are recommended; while the supine transabdominal approach combined with intraoperative change to the prone jacket position facilitates adequate exposure of the surgical field and enables precise overall resection of the bony pelvis and pelvic floor muscle groups invaded by the tumor. Empty pelvic syndrome has always been an major problem to be solved during PE. The application of extracellular matrix biological mesh to reconstruct pelvic floor defects and isolate the abdominopelvic cavity is expected to reduce postoperative pelvic floor related complications. Reconstruction of the urinary system and important vessels after PE is essential, and the selection of appropriate reconstruction methods helps to improve the patient's postoperative quality of life, while more new methods are also being continuously explored.
Topics: Humans; Pelvic Exenteration; Quality of Life; Neoplasm Recurrence, Local; Pelvis; Postoperative Complications; Rectal Neoplasms; Retrospective Studies; Treatment Outcome
PubMed: 36925122
DOI: 10.3760/cma.j.cn441530-20221208-00517 -
PloS One 2019The function of the pelvic bones is to transfer load generated by body weight. Proper function of the pelvic bones can be disturbed by alignment changes that occur...
BACKGROUND
The function of the pelvic bones is to transfer load generated by body weight. Proper function of the pelvic bones can be disturbed by alignment changes that occur during pregnancy. Further, misalignment of the pelvic bones can lead to pain, urinary incontinence, and other complications. An understanding of the timing and nature of pelvic alignment changes during pregnancy may aid in preventing and treating these complications.
OBJECTIVE
To investigate the changes in pelvic alignment during pregnancy and one month after childbirth.
METHODS
This is a prospective, longitudinal cohort study. Pelvic measurements were obtained for 201 women at 12, 24, 30, and 36 weeks of pregnancy, and 1 month after childbirth. The anterior and posterior width of the pelvis (the distance between the bilateral anterior superior iliac spines and the bilateral posterior superior iliac spines), the anterior pelvic tilt, and pelvic asymmetry (the mean left and right pelvic tilt degrees and the bilateral difference of the anterior pelvic tilt) were measured. For the change in pelvic alignment, a Friedman test was conducted to determine any significant difference in the measurements over time.
RESULTS
The anterior and posterior width of the pelvis became significantly wider with pregnancy progress and the anterior width of the pelvis at 1 month after childbirth remained wider than that at 12 weeks of pregnancy (p < 0.001). The anterior pelvic tilt increased during pregnancy and decreased after childbirth (p < 0.05).
CONCLUSION
Some changes in pelvic alignment occur continuously during the perinatal period. Changes in the anterior width of the pelvis are not recovered at one month post-childbirth. Understanding these perinatal changes may help clinicians avert complications due to pelvic misalignment.
Topics: Adult; Female; Humans; Pelvis; Pregnancy; Pregnancy Trimesters
PubMed: 31600310
DOI: 10.1371/journal.pone.0223776 -
Anatomia, Histologia, Embryologia Apr 2018This research is a study about the arterial vascularization of pelvic cavity and pelvic limb in pampas deer. For this study, 25 dead animals were used. The...
This research is a study about the arterial vascularization of pelvic cavity and pelvic limb in pampas deer. For this study, 25 dead animals were used. The vascularization of the organs was investigated using a latex injection technique. Two animals were injected in the common carotid artery with contrast to cardiac angiography, and then, radiographs were taken. The aorta showed the two external iliac arteries, and after a short course, the aorta ended in two internal iliac arteries. The median sacral artery was originated from the dorsal surface cranially to the emergence of the internal iliac arteries. The last one gave off parietal (iliolumbar, cranial and caudal gluteal arteries) and visceral (umbilical and internal pudendal arteries) branches. The external iliac artery gave as first branch the deep circumflex iliac artery which was divided into a cranial and a caudal branch. After a short distance from the external iliac artery, the femoral and deep femoral arteries were originated. The deep femoral artery gave origin to the pudendoepigastric trunk and to the medial femoral circumflex artery. Based on the arterial distribution of the pelvic cavity and pelvic limb in the pampas deer, it is concluded that the internal iliac artery has a pattern of intermediate development. In reference to the distribution of the external iliac artery and its branches, the pattern of development is the cranial tibial type.
Topics: Animals; Aorta, Abdominal; Coronary Angiography; Deer; Female; Femoral Artery; Iliac Artery; Male; Pelvis
PubMed: 29205895
DOI: 10.1111/ahe.12331