Study of stafne's defects in Late Neolithic,Late Roman,Medieval and Modern skeletal samples from Portugal

Lingual mandibular cortical defects (Stafne's defects) are relatively uncommon in recent as well as past populations, but while this condition is often discussed in clinical reports, they are rarely the subject of anthropological research. In this paper, the prevalence of Stafne's bone defects in skeletal samples from Late Neolithic, Late Roman, Medieval and Modern Portugal is investigated (N = 704 complete mandibles and 111 incomplete mandibles). The aims of this paper are threefold: (1) to present and analyse for the first time in Portuguese osteological record prevalence data on Stafne's bone defect, (2) to analyse variations in defect prevalence between skeletal samples from a wide temporal array and (3) to verify if more tenuous lesions in which resorption of the lingual cortex was not yet extensive had the classic radiographic appearance described by Stafne in order to validate the hypothesis that lesions are present clinically in many more cases than published figures indicate. In all cases, differential diagnosis against other conditions that mimic Stafne's defects, namely odontogenic lesions, cysts and neoplasms, was done. In all samples, the evidence of Stafne's defect occurred in 12 individuals (1.7%), and males (2.84%) were more frequently affected than females (0.61%). When incomplete mandibles were considered, only one left fragment (0.90%) exhibited Stafne's defect. Accurate identification of all examples of Stafne's bone defects in antiquity is thought to represent an important contribution to elucidate which factors may be responsible for this trait's cultural, ecological, temporal and geographical patterning. Copyright © 2010 John Wiley & Sons, Ltd.     

Atomic Force Microscopy for High Resolution Imaging of Collagen Fibrils—A New Technique to Investigate Collagen Structure in Historic Bone Tissues

In this study, we present a new technique for the structural analysis of the collagen compound in historic tissues. We therefore used atomic force microscopy (AFM), a new high resolution technique which offers significant information on the fibrillar assembly and ultrastructure of collagen fibrils, which may provide insight into both the physiological and eventually pathogenic pattern of collagen fibrils, but also into possible diagenetic destructive changes of those fibrils. AFM figures three-dimensionally the surface of a sample with high resolution down to a nanometer scale. In our investigation we used the AFM to image paraffin embedded tissue sections from femoral bone tissue of a recent case and an age determined historic sample in ambient conditions. With this technique we were able to identify unambiguously collagen bundles and to determine their diameter. These results led us to differentiate the bundling pattern of collagen type I from that of collagen type II. In addition, we identified collagen type I in the historic sample, which provided a fibrillar pattern as that of recent bone. The results were compared to standard immunohistochemical staining techniques of the respective collagen types. In conclusion, our study presents circumstantial evidence that AFM analysis as a novel morphological technique can successfully be applied to historic tissue specimens.     

A bone grease processing station at the Mitchell Prehistoric Indian Village: Archaeological evidence for the exploitation of bone fats

Recent excavations at the Mitchell Prehistoric Indian Village, an Initial Middle Missouri site in Mitchell, South Dakota have revealed a large, clay-lined feature filled with fractured and fragmented bison bones. Fracture and fragmentation analysis, along with taphonomic evidence, suggests that the bones preserved within the feature represent evidence of prehistoric bone marrow and bone grease exploitation. Further, the character of the feature suggests that it served as a bone grease processing station. Bone fat exploitation is an activity that is frequently cited as a causal explanation for the nature of many fractured and fragmented bone assemblages in prehistory, and zooarchaeological assemblages have frequently been studied as evidence of bone fat exploitation. The Mitchell example provides some of the first direct, in-situ archaeological evidence of a bone grease processing feature, and this interpretation is sustained by substantial analytical evidence suggesting bone fat exploitation. This new evidence provides a clearer concept of the nature of bone fat exploitation in prehistory as well as an indication of the scale and degree to which bone grease exploitation occurred at the Mitchell site. Finally, this research demonstrates the importance of careful zooarchaeological and taphonomic analysis for the interpretation of both artifactual remains as well as archaeological features.     

Accessory navicular: A heritable accessory bone of the human foot

The accessory navicular is a supernumerary bone of the human foot located medial to the navicular tuberosity and represents a secondary center of ossification that has failed to fuse to the main body of the navicular. Three forms of the accessory bone have been identified: Type I is an independent ossicle that is often embedded within the tibialis posterior tendon; Type II is a triangular accessory bone that attaches to the navicular tuberosity by means of a cartilaginous or fibrocartilaginous bridge; and Type III represents a fused Type II, which forms a hook‐like protuberance extending from the tuberosity. The Type II accessory navicular is the most common of the three forms and is the most readily identifiable in skeletal material since it causes the navicular tuberosity to become abnormally flattened and porous. The purpose of this study was to describe the various manifestations of the accessory navicular in dry bone, to present and compare frequency data for several skeletal populations, and to consider questions of laterality and sex bias in trait expression. In total, the skeletons of 497 Danes, 460 Euro‐Americans, 300 African Americans, 100 Japanese, and 205 Europeans were examined for the presence of the Type II accessory navicular. Overall frequencies for the five groups ranged from 2% in the African American sample to 5% in the Japanese sample. Since several family pedigrees have documented the accessory navicular as being an inherited skeletal defect, the relatively low frequency found in the present study makes this trait a potentially useful indicator of genetic relatedness within archaeological cemeteries. In addition, the trait was found to occur more often unilaterally than bilaterally and there was nearly equal incidence among males and females. Copyright © 2010 John Wiley & Sons, Ltd.     

Kana Tamata or Feasts of Men: An Interdisciplinary Approach for Identifying Cannibalism in Prehistoric Fiji

By integrating osteological, taphonomic, archaeological and stable isotopic data, we test for cannibalism in the Lau Group, Fiji and discuss the potential underlying cause(s) and context(s) of this behaviour. First, we compare taphonomic and element representations of human skeletal material from two contexts in Fiji, examining human bone fragments from archaeological sites, including middens and burials in the Lau Island Group. Fourteen sites produced human remains. Only two of those sites included distinct human burial contexts, but in the remaining 12 sites, the human bone was recovered from middens or contexts where midden was mixed with possible secondary burials. A total of 262 number of identified specimens per species, representing an estimated 15 minimum number of individuals make up the Lau human assemblage. Second, we analysed bones contained in 20 individual human burials from four different sites that are housed at the Fiji Museum for comparative purposes. Third, we examine previously published stable isotopic (δ¹³C, δ¹⁵N) analysis of bone collagen to gauge protein consumption of likely cannibalised humans in midden contexts and potential cannibals from primary burials. We model a cannibalistic diet category within the context of isotopically measured Pacific Islands food groups and apply an isotopic mixing model to gauge plausible dietary contributions from six sources including human flesh. Isotopic mixing models of the Lauan samples illustrate a high diversity in reconstructed diets. The percent contribution of human flesh is low for all individual Lauans. We conclude that mortuary rituals evidenced by sharp‐force trauma may suggest non‐nutritive and non‐violent practices that may have included the consumption of small amounts of human flesh. Copyright © 2012 John Wiley & Sons, Ltd.     

Morphological taphonomic transformations of fossil bones in continental environments,and repercussions on their chemical composition

The aim of this paper is to provide a summary of structural or surface modifications of vertebrate bone remains in continental palaeoenvironments that may have repercussions on their chemical composition. Both before and after burial, a different set of physical, chemical and biological agencies may produce modifications of the bone morphological structure and/or bone chemical composition. Several of these morphological modifications are diagnostic of particular agents, which otherwise may not be noticed or identified in a fossil association. In order to understand diagenesis, those events that occurred before final burial have to be considered, as they may strongly modify the bone morphological structure and influence post–burial changes.     

What Lula lacks: Grappling with the discourse of autism at home and in the field (Respond to this article at http://www.therai.org.uk/at/debate)

This paper examines the discourse of autism as we have experienced it as parents of an autistic six year‐old girl. Because both authors are anthropologists, we were professionally trained to understand something of what discourses are and do. However, our training did not necessarily help us blunt the original force of the diagnosis. Over time we have come to understand both our daughter and the discourse that is said to define her differently, and these understandings have fed back into our understanding of our discipline. One key transformative event occurred when we took our family to live in a village where we had done previous research. This reminded us of the conceptual power of discourses: we put the discourse of autism to work for our own purposes, but at the same time it works on us, shapes us in ways we do not always realize.     

Breaking Bones to Obtain Marrow: A Comparative Study between Percussion by Batting Bone on an Anvil and Hammerstone Percussion

The fat‐ and nutrient‐rich marrow of animal bones can be extracted using different techniques. Passive hammerstone percussion has been the primary focus of experimental bone breaking and the main analogy to understand archaeological bone breakage. Here, the term ‘passive’ is applied because the bone to be broken passively receives the impact from a hammerstone. In addition to this technique, there is another bone‐breaking method that also requires direct percussion, but in an active way. This method is percussion by ‘batting’, in which the bone is actively hit against an anvil until the bone breaks. This technique has rarely been considered at an experimental level and, therefore, has been omitted in the majority of the archaeological interpretations of faunal assemblages with pre‐use of fire technologies. In this study, we attempt to analytically characterize this type of bone‐breaking technique through a systematic comparison with hammerstone percussion. The applied statistical tests will allow us to distinguish some diagnostic modifications, such as the outlines of the fracture planes and the type of notches or their location with respect to the longitudinal axis of the bone. These features and their proportions allow the consideration of the use of this technique in Pleistocene anthropogenic faunal assemblages.     

THE 2013 ANTIPODE RGS‐IBG LECTURE New Materialisms and Neoliberal Natures

The rise of non‐deterministic understandings of nature, with their emphasis on intensive difference and non‐linear processes, has occurred in conjunction with the neoliberalization of environmental governance, which at once emphasizes and financializes the inherent productivity of nature. This paper accepts the position that there is a link between the two, but argues that if we are to maintain a crucial ontological distinction between capital and non‐capital, this link must be understood as contingent rather than necessary. Drawing upon Deleuze and Guattari's concept of “universal history”, I argue that the neoliberalization of nature must be understood, in part, as the strategic containment of the critical energies of new materialist thought, and that the role of critical historiography is to recognize within processes of containment the contents and qualities of more radical possibilities. If such critical efforts are to succeed they must continually distinguish between nature's innovative force and the mechanisms that seek to capture this force in the service of capital and state. In turn, if we are to remember the radical potential of these ideas, the neoliberalization of nature must be understood as a response to these critical energies, and not their origin.     

“Measure for measure”: a taphonomic reconsideration of the Kebaran site of Ein Gev I,Israel

We present the results of a detailed taphonomic study of the faunal remains from Ein Gev I, a Kebaran open-air site near the Sea of Galilee, Israel. In an earlier study faunal remains were assigned to bone element and species using a rapid method technique based on the identification of teeth and epiphyses only (Davis, 1974). In this study we identified the maximum number of skeletal elements, including fragments of long bone shafts. We also employed a series of taphonomic analyses to reconstruct the depositional history of the bone assemblage and to investigate subsistence, meat procurement and bone processing strategies. We compared the results obtained by a complete bone sampling method with those derived using a rapid method. The bone assemblage is dominated by mountain gazelle (Gazella gazelle), Mesopotamian fallow deer (Dama mesopotamica) and bezoar goat (Capra aegagrus). The assemblage is characterized by significant density-mediated biases, caused by both human bone processing behaviours and in situ post-burial bone attrition. Our attempts to compare species abundance derived from the two different identification protocols revealed no significant difference between the two sampling methods, both in terms of species diversity (richness and evenness) and skeletal element abundance (SEA). These comparisons contrast previous studies that expected to find ubiquitous head-and-foot dominated SEA profiles in zooarchaeological studies that were based on the incomplete identification of faunal remains.     

Skeletal Manifestations of Skin Ulcer in the Lower Leg

Skin ulcers of the lower leg are known to cause both destructive and, more commonly, bone‐forming lesions. Typically, bone‐forming lesions in this disorder have clearly defined margins although there may be extensive reactive bone formation involving much or all of the adjacent diaphysis. These lesions are best described in patients from tropical areas, and in these environmental contexts, these are known as tropical ulcers, but leg ulcers can be caused by a variety of diseases and conditions, of which vascular insufficiency plays an important role among the elderly. The lesions are important clinically because of the disability associated with the ulcer and because of complications that can develop including osteomyelitis and cancer. In most cases, the bone lesions caused by ulcer are easily diagnosed in archaeological human skeletal remains and provide some insight into the prevalence of this disorder in antiquity. In this paper, we review the gross and radiological manifestations of bone lesions resulting from overlying skin ulcer in tibiae of 13 cases including archaeological and modern medically documented skeletons. In two of the cases, there is medical documentation regarding the presence of a chronic ulcer on the lower leg. The objectives of this paper were to explore the diversity of bone lesions associated with ulcers of the tibia and to provide an improved basis for the diagnosis of this disorder in human skeletal remains. Copyright © 2011 John Wiley & Sons, Ltd.     

社区旅游资源产权困境及其改善

文章从产权理论和社区旅游资源的复合体特性入手,在分析社区旅游资源的4个特性和3个价值构成的基础上,认为社区旅游资源的复合体特性、资源属性的多样性及制度缺陷导致了社区旅游资源的产权困境。最后进一步探讨产权困境对社区旅游开发的影响,尝试提出了改善困境的几点建议。     

State‐of–the–art imaging in palaeopathology: the value of multislice computed tomography in visualizing doubtful cranial lesions

Non‐invasive imaging techniques are of great value in palaeopathology. Computed tomography (CT) is widely established to visualize changes in human remains that occurred both pre and post mortem. Since 1999 an advanced form of helical CT—so called Multislice‐CT (MSCT)—has become available for clinical purposes. We now present for the first time three historic cranial lesions of doubtful aetiology visualized by MSCT. Both original images and virtual reconstructions of the specimens are of high quality. In combination with peri‐lesional bone density measurements these images allow an improved assessment of aetiology. The cases presented are diagnosed by MSCT as being of intra vitam nature in two individuals and of post mortem character in one case. Time consuming post‐processing analysis and the still small number of scanners presently available may limit application of this new technique. Nevertheless, based on our preliminary results, we strongly recommend non‐invasive evaluation by MSCT to be used for non‐clinical purposes such as palaeopathological research. Copyright © 2002 John Wiley & Sons, Ltd.     

Traumatic bowing deformities in tubular bones

Is bowing in long bones from an archaeological context representative of postmortem damage or genuine antemortem pathology? Bowing deformities (also known as traumatic bowing deformities, plastic bowing deformities, plastic bowing fractures and acute bowing fractures in the clinical literature) are true pathological entities that have only recently been recognized by clinicians. Bowing in long bones results from a force that exceeds the elastic properties of a given bone, producing a new plastic (bowing) response phase. These subtle deformities commonly affect the radii and ulnae in children and less frequently other tubular bones of the skeleton. Traumatic bowing should be considered as a possible diagnosis whenever abnormal curvature of a long bone is observed. This presentation illustrates two cases of traumatic bowing isolated from two ossuary populations from Ontario, Canada and addresses differential diagnostic concerns. © 1998 John Wiley & Sons, Ltd.     

Experimental effects of bone size and temperature on bone diagenesis

In the ground, bone undergoes chemical and physical changes which affect its preservation. This fact has important implications for dating and other analytical procedures involving bone, as well as faunal analysis where differential preservation of bones of different species may affect conclusions regarding the relative significance of an animal to the economy of a given society. The diagenic processes in bone range from minor changes in the bone protein to complete structural and chemical breakdown.Using fresh cow bone, we conducted laboratory experiments which simulate the effect of temperature and bone size on the rate and nature of bone disintegration in archaeological sites. Temperature influences the rate of chemical change, and bone size and density affect the accessibility of the molecular constituents of bone to extrinsic chemical reactions. These findings clarify the importance of two well-known concepts in bone taphonomy. (1) The rate of chemical breakdown in bone tissues is related to the proximity of a given unit of tissue to the bone surface. This means that, in archaeological bone samples, tissue near the surface may be different chemically from tissue away from the surface and great care is necessary in choosing and preparing bone samples for analytical procedures. (2) In general, small bones are not as well preserved as large bones, therefore small animals are likely to be underrepresented in faunal assemblages.     

An Investigation Into the Relationship Between Funerary Treatment and Bacterial Bioerosion in European Archaeological Human Bone

A central problem in funerary archaeology is interpreting how the corpse was manipulated in the immediate post mortem period. The extent of bacterial bioerosion to the internal bone microstructure has been proposed as a means to infer the early post mortem history of a corpse, as it has been suggested that this form of bone diagenesis is produced by an organism's putrefactive gut bacteria. Under this model, different forms of funerary treatment would be expected to leave characteristic signatures of bioerosion in archaeological bone. Here, we tested the extent to which bacterial bioerosion of ancient human bones reflected funerary treatment, through histological analysis of 301 archaeological human bone thin sections from 25 European archaeological sites. We found that bioerosion was significantly influenced by whether a bone originated from a neonatal individual or an anoxic context. When these remains were excluded, bioerosion was controlled by archaeological phase in a manner consistent with known early post mortem treatment and forensic models of bodily decomposition. These findings suggest that microscopic analyses of bone have useful applications in reconstructions of funerary processes and provide some insight into factors that may control the persistence of organic biomolecules and fossilization.     

Uranium and Vanadium Concentrations as a Trace Element Method for Identifying Diagenetically Altered Bone in the Inorganic Phase

Archaeologists have generally avoided analyzing inorganic isotopes in bone because of its high porosity, large crystalline lattice spacing, and small crystallite size, making it particularly susceptible to diagenetic alteration. Because the inorganic isotopes are left unstudied, we lose a significant portion of information pertaining to an individual’s life history, such as migration, health, and ranging behavior. Tooth enamel, which does not have the same susceptibility to diagenesis as bone, can be used to extract this information but this means that taxa lacking teeth, such as birds, some species of fish, and some reptiles, are excluded. Here, we present a method that can be used to identify diagenetic alternation in bone. This is done by focusing on abnormal concentrations of vanadium and uranium. Neither element is readily bio-precipitated into hydroxyapatite due to ionic radius, vibrational frequency, atomic mass, and ionic charge. This makes them an ideal marker for diagenetically altered bone. Vanadium occurs in very low concentrations in modern bone, while archaeological bone shows clear evidence of normal, non-diagenetically altered values alongside high concentrations of vanadium in diagenetically altered bone. Uranium also is a measure of diagenetic alteration, as modern bone has concentrations below detectable limits (0.017 ppb), while some archaeological bone contains uranium above detectable limits. The biogeochemistry of these elements in soil and bone are discussed with implications for enamel studies.     

An example of unhealed osteochondritis dissecans of the medial cuneiform

One hundred and thirty-six well-preserved medieval skeletons were excavated in advance of redevelopment in Norwich. A 13–15-year-old displayed a large circular defect on the distal articular surface of the right medial cuneiform. This is considered to be an example of unhealed osteochondritis dissecans. The atypical site, apparently the first published case of osteochondritis dissecans involving this bone in either archaeological or clinical material, has prompted this short note. Copyright © 2001 John Wiley & Sons, Ltd.     

Taphonomic modifications produced by modern brown bears (Ursus arctos)

Actualism has been a fundamental tool in taphonomy. The knowledge of accumulation patterning of modern faunal allows us to interpret the activity of different actors in the archaeological record and to reconstruct the behaviour of preterit animals and humans in which we are interested. However, until now, there are few works that include bone modifications made by bears amongst those made by carnivores. Most data about bone modifications made by bears have been obtained from the archaeo‐palaeontological record. In most of these assemblages, the presence of bears is related to their period of hibernation. Therefore, in these contexts, the changes documented on recovered bear bones are associated only with cannibalism. In this paper, we present an actualistic study about modifications on bones made by modern brown bears. These animals can cause damage similar to those produced by other large carnivores. Generally, bear activity leaves slight damage, mainly on large‐sized animal bones. However, on bones of small‐sized animals and those of greater fragility, the bears can produce abundant damage. Though not usual, bears can break long bones and consume the complete epiphysis. This study suggests that bears have the potential to be agents of bone modification in fossil assemblages. Consequently, they should be considered as a possible agent of modification of faunal remains in the fossil record. Copyright © 2011 John Wiley & Sons, Ltd.