Measuring the human pelvis: A comparison of direct and radiographic techniques using a modern United States–based sample

Schroeder, Chris Fredericks; Schmidtke, S; Bidez, Martha Warren

doi:10.1002/(sici)1096-8644(199708)103:4<471::aid-ajpa5>3.0.co;2-q

Cited by 17 publications

(16 citation statements)

References 20 publications

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“…The 99% prediction intervals for the population cover all the pelvic width and height measurements published and so would appear to be an accurate representation of the expected population (Table ). This study matches well with Schroder et al (). There are no clear reasons for the slightly lower mean values in the Seidel et al () study; however, no BMI information was available for comparison, and our subject age range included younger subjects.…”

Section: Discussionsupporting

confidence: 94%

“…Schroder et al () reported image‐based (plain radiographic) and direct cadaveric measurements of the same 50 pelves. They found, as did this study, a lower mean pelvic width for the image‐based measurements, despite taking steps to minimize inaccuracy.…”

Section: Discussionmentioning

confidence: 99%

“…Some studies have focused on specific features of the pelvis (Benedetti et al, 1996;Govsa et al, 2005;Papaloucas et al, 2008;Haimerl et al, 2012;Zahn et al, 2016), while others have reported pelvic width and/or height using different defining landmarks from those used for the APP (Brinckmann et al, 1981;Milne, 1990;John and Fisher, 1994). Only two comparable studies were found which reported pelvic width defined as the inter-ASIS distance (Seidel et al, 1995;Schroder et al, 1997), with the second also reporting pelvic height defined as the distance from the pubic symphysis to the mid-point of the inter-ASIS line ( Table 5).…”

Section: Discussionmentioning

confidence: 99%

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Variations in pelvic dimensions: An anatomical and computed tomography study

et al. 2018

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The anterior pelvic plane (APP) is a useful anatomical reference with both clinical and research applications in orthopedic surgery and rehabilitation medicine. It is used as a marker for computer-assisted total hip replacement and image-guided assessment of the hip center in clinical gait analysis. Despite its common use, no published data exist on the variations in height and width in an adult population. The aim of this study was to determine the range of dimensions for the anterior pelvic plane found in the Scottish adult population. Thirty-five human cadavers and 100 pelvic computed tomography (CT) scans were examined. Pelvic height and width were measured, and the ratios were determined. The mean width and height for combined cadaver and CT pelves were found to be 238.0 mm (SD 20.1, range 188.3-273.8) and 92.7 mm (SD 10.5, range 71.2-114.7), respectively. The mean width-to-height ratio for all pelves was 2.59 (SD 0.31, range 1.73-3.50). There were no statistically significant differences in means between males and females. The variations of APP dimensions within an adult population are presented. These will be of value in the validation of algorithms for computer navigation and hip joint center calculation in total hip arthroplasty and gait analysis. Furthermore, differences in dimensions between cadaveric and CT measurements have been shown which may have implications for further research and the validity of reference data dependent on data-point acquisition. Clin. Anat. 31:981-987, 2018. © 2018 Wiley Periodicals, Inc.

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Section: Discussionsupporting

confidence: 94%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Variations in pelvic dimensions: An anatomical and computed tomography study

et al. 2018

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“…A few researchers in the past 100 years have employed direct clinical pelvic metric analyses that align with obstetrically significant measures to assess skeletal pelvic samples (Young and Ince, 1940;Heyns, 1944;Segebarth-Orban, 1980;Holland et al, 1982;Iscan and Cotton, 1985;Abitbol, 1987;Tague and Lovejoy, 1986;Tague, 1989;Sibley et al, 1992;Schroeder et al, 1997;Stone, 2000;Kurki, 2007;Okoseimiema and Udoaka, 2013). A few researchers in the past 100 years have employed direct clinical pelvic metric analyses that align with obstetrically significant measures to assess skeletal pelvic samples (Young and Ince, 1940;Heyns, 1944;Segebarth-Orban, 1980;Holland et al, 1982;Iscan and Cotton, 1985;Abitbol, 1987;Tague and Lovejoy, 1986;Tague, 1989;Sibley et al, 1992;Schroeder et al, 1997;Stone, 2000;Kurki, 2007;Okoseimiema and Udoaka, 2013).…”

Section: Measuring Obstetrical Risk In the Pastmentioning

confidence: 99%

Biocultural perspectives on maternal mortality and obstetrical death from the past to the present

Stone

2016

American J Phys Anthropol

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Global efforts to improve maternal health are the fifth focus goal of the Millennium Development Goals adopted by the international community in 2000. While maternal mortality is an epidemic, and the death of a woman in childbirth is tragic, certain assumptions that frame the risk of death for reproductive aged women continue to hinge on the anthropological theory of the "obstetric dilemma." According to this theory, a cost of hominin selection to bipedalism is the reduction of the pelvic girdle; in tension with increasing encephalization, this reduction results in cephalopelvic disproportion, creating an assumed fragile relationship between a woman, her reproductive body, and the neonates she gives birth to. This theory, conceived in the 19th century, gained traction in the paleoanthropological literature in the mid-20th century. Supported by biomedical discourses, it was cited as the definitive reason for difficulties in human birth. Bioarchaeological research supported this narrative by utilizing demographic parameters that depict the death of young women from reproductive complications. But the roles of biomedical and cultural practices that place women at higher risk for morbidity and early mortality are often not considered. This review argues that reinforcing the obstetrical dilemma by framing reproductive complications as the direct result of evolutionary forces conceals the larger health disparities and risks that women face globally. The obstetrical dilemma theory shifts the focus away from other physiological and cultural components that have evolved in concert with bipedalism to ensure the safe delivery of mother and child. It also sets the stage for a framework of biological determinism and structural violence in which the reproductive aged female is a product of her pathologized reproductive body. But what puts reproductive aged women at risk for higher rates of morbidity and mortality goes far beyond the reproductive body. Moving beyond reproduction as the root causes of health inequalities reveals gendered-based oppression and inequality in health analyses. In this new model, maternal mortality can be seen as a sensitive indicator of inequality and social development, and can be explored for what it is telling us about women's health and lives. This article reviews the research in pelvic architecture and cephalopelvic relationships from the subfields of evolutionary biology, paleoanthropology, bioarchaeology, medical anthropology, and medicine, juxtaposing it with historical, ethnographic, and global maternal health analyses to offer a biocultural examination of maternal mortality and reproductive risk management. It reveals the structural violence against reproductive aged women inherent in the biomedical management of birth. By reframing birth as normal, not pathological, global health initiatives can consider new policies that focus on larger issues of disparity (e.g., poverty, lack of education, and poor nutrition) and support better health outcomes across the spectrum of life for women globally.

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“…Terry conducted experiments using cadavers and living subjects to ensure that the tables allowed for the measurement of living stature data from the cadaver. As a result of Terry's standardized protocol, various methodological problems associated with measuring dry versus wet bone, measuring bones from radiographs or reclined cadaveric length are avoided [15][16][17][18]. Unlike other sources of stature data, such as the Forensic Anthropology Databank or FDB [8], reduced measurement error is an added benefit of using the Terry Collection data.…”

Section: Methodsmentioning

confidence: 99%