Human Pelvis Height is Associated with Other Pelvis Measurements of Obstetric Value

In low resource settings, perinatal death remains a major challenge, yet some of the key anthropometric measures used for screening have been found to be inappropriate. These calls for additional anatomically related measurements to act as a basis for the design of: easy-to-use, low technology accurate tools to enhance obstetric care quality in these settings. This study set out to determine the associations between the various pelvis anthropometric measurements of obstetric importance with pelvis height. The study made use of 30 complete rearticulated Adult pelvic bonesets of known sex. The some of the thirteen measurements made on each boneset included: Pelvis height, Sacral Anterior Orientation (SAO), pubic bone length, total pelvis height and inlet medial-lateral diameter. All measurements were taken thrice and the average used for comparisons with pelvis height. The non-parametric Mann-Whitney test and multilevel regression analysis test to control for gender was used. Pelvis height had significant associations with SAO (-0.36, P<0.01), pubic bone length (0.41, P<0.01), total pelvis height (0.21, P=0.04) and inlet medial-lateral  diameter (0.46, P=0.02). Additional significant associations were observed with the diameters of the mid and outlet diameters of the birth canal. Pelvis height had significant associations with: total pelvis height and inletmedial-lateral diameter of the pelvis and the measurements related to the mid and outlet diameters of the birth canal. This study provides initial  evidence to support further evaluation of pelvis height as an additional tool for the assessment of the human birth canal.Key words: Pelvis height, Pelvimetry, Childbirth low resource setting

An Early Juvenile Hominin Skeleton from Dikika, Ethiopia

Understanding changes in ontogenetic development is central to the study of human evolution. With the exception of Neanderthals, the growth patterns of fossil hominins have not been studied comprehensively because the fossil record currently lacks specimens that document both cranial and postcranial development at young ontogenetic stages. Here we describe a well-preserved 3.3-million-year-old juvenile partial skeleton of Australopithecus afarensis discovered in the Dikika research area of Ethiopia. The skull of the approximately three-year-old presumed female shows that most features diagnostic of the species are evident even at this early stage of development. The find includes many previously unknown skeletal elements from the Pliocene hominin record, including a hyoid bone that has a typical African ape morphology. The foot and other evidence from the lower limb provide clear evidence for bipedal locomotion, but the gorilla-like scapula and long and curved manual phalanges raise new questions about the importance of arboreal behaviour in the A. afarensis locomotor repertoire