The Occurrence and Possible Aetiology of Spondylolysis in a Pre‐contact California Population

The occurrence of spondylolysis (neural arch separation at the pars interarticularis) is reported in a pre‐contact (720–550 Cal BP) Central California population, CA‐CCo‐647 (n = 46). Spondylolysis was examined within this population to assess differences in sex, age, and possible relationships with biological affinity. Furthermore, prevalence rates of spondylolysis were compared across various populations to discern the aetiology of the defect. Within CA‐CCo‐647, spondylolysis was found in 17.4% (8/46) of the population. All occurrences are complete, bilateral separations of the neural arch in the lower lumbar (L4 and L5). The defect is not seen in individuals below the age of 18, and there is no correlation between adult age and spondylolysis. Male individuals display the defect at a higher rate (30.8% ‐ 4/13) than female individuals (12.1% ‐ 4/33); however, this is not a statistically significant finding. There does seem to be a correlation between an individual's sex and the onset of the defect; male individuals display spondylolysis at a younger age than female individuals. This finding could represent differences in activity patterns among young male and female individuals. In a biological distance analysis using craniometric data, male and female individuals with spondylolysis clustered closely, suggesting a genetic component for the defect. Finally, significant differences were found in spondylolysis prevalence between various populations representing distinct geographic and temporal settings. Significant differences were found among Native pre‐contact samples and even between two comparable pre‐contact California skeletal samples. These populations all engaged in distinct activities and were likely composed of genetically distinct groups of individuals, which may account for the differences in spondylolysis prevalence. All of these findings, both within CA‐CCo‐647 and between the various samples, suggest that the aetiology of spondylolysis is likely an interaction of genes and activity. Copyright © 2012 John Wiley & Sons, Ltd.     

Spondylolysis in a pre‐contact San Francisco Bay population: behavioural and anatomical sex differences

Spondylolysis refers to a separation of the spinal body from the arch. Researchers have documented that these fractures occur due to stresses related to activities involving the lower limb and back. Spondylolysis in sacral and lumbar vertebrae of 146 (66 males, 66 females, 14 indeterminates) California Amerinds were examined to determine whether sex differences were present. Sacral anatomy (i.e. sacralisation and lumbarisation, sacral base angles, and superior facet morphology) was analysed in relation to spondylolysis and sex, to explore whether sex differences could be better explained through activity patterns or anatomical variation. Spondylolysis afflicted 24 individuals (16.4%). Males had more than twice the rate of spondylolysis than did females (26% and 11%, respectively). Activity patterns, such as thrusting and throwing shafted obsidian points, could explain the sex differences. Males were most frequently buried with obsidian point artefacts, whereas females were buried with mortar and pestles. For sacral anatomy, only males had lumbarisation, and all other anatomical variation had no significant sex differences. Lumbarisation related to spondylolysis in males. In this study, sacral anatomical variation could not fully account for sex differences in spondylolysis; activity patterns provided a better explanation. Nonetheless, anatomical variation may predispose males to spondylolysis, or spondylolysis may affect sacral anatomy. Copyright © 2008 John Wiley & Sons, Ltd.     

Spondylolysis in Inuit skeletons from Arctic Canada

Inuit skeletons from archaeological sites in Arctic Canada were examined for the presence of spondylolysis. The largest series represent the Thule culture and historic Inuit from northwest Hudson Bay and Labrador, and Sadlermiut from Southampton Island. The condition was found in 90 individuals, with a total of 120 affected vertebrae producing 198 hemi‐arch defect sites. As in other studies, L5 is affected most frequently, followed by L4 and L3, but examples of L1, L2, L6, and S1 involvement are represented. Incomplete separations account for 20% (40) of the 198 defects, and 5% (10) occur at sites other than interarticularis. Affected males outnumber females at a ratio of 2.4 to 1. The condition was found to increase in frequency from adolescence to young adulthood, and then decrease to middle adulthood and decrease again to old adulthood, but the drop in frequency with age in the adult categories is significant only at the .20 level. Where comparisons could be made, the data obtained from the Canadian Inuit closely resemble those obtained from Alaskan Eskimos and Aleuts, especially their closest linguistic relatives, Inupiat speakers in northern Alaska. Copyright © 2002 John Wiley & Sons, Ltd.     

Spondylolysis in the lower thoracic–upper lumbar spine in a British medieval population

Spondylolysis is generally a condition of the lower lumbar spine, but occasionally it is observed at cranial to L4. It is generally agreed that spondylolysis in the lower lumbar spine represents fatigue failure of the neural arch. However, whether a biomechanical explanation is adequate to explain lesions cranial to L4 is disputed. Morphological aspects of spondylolysis at T12–L3 (five cases) are compared with those of lesions at L4–L6 (24 cases) in a mediaeval English skeletal series with the aim of shedding light upon any differences in aetiology of lesions at the two sites. It was found that spondylolysis at T12–L3 was more often unilateral than in L4–L6. In T12–L3, clefts more often took an angulated, dog‐leg course across the pars interarticularis, whereas most in L4–L6 were fairly straight and had an oblique orientation. In T12–L3, clefts often had facetted opposing surfaces suggestive of a diarthrodial joint, but this was only seen once in L4–L6. It is suggested on morphological grounds that facetted defects are more likely congenital than acquired. The need for consideration of factors in addition to activity regimes when interpreting spondylolysis in earlier populations is emphasised. Copyright © 2007 John Wiley & Sons, Ltd.     

Spondylolysis in non‐adult skeletons excavated from a medieval rural archaeological site in England

Spondylolysis is studied in a large series of non‐adult skeletons, ranging in age at death from 28 weeks gestation to 18 years old, from the deserted medieval village of Wharram Percy. The aim is to shed light on the age of occurrence of the lesion. Among those with complete lumbar spines, the prevalence of spondylolysis is 0.7%. The prevalence in adults from this group is 12% with no age patterning. Age of occurrence of spondylolysis in this population is inferred generally to be during late adolescent or early adult life. This contrasts with a published study of a modern reference group, unselected for activity patterns or medical complaints, which reported that in most cases spondylolytic defects had already formed by 6 years of age. The Wharram Percy group appeared to resemble rather more the pattern seen today in those involved in strenuous activities, such as competitive sports, both in the relatively late age of occurrence of defects and in the eventual high prevalence. This may be consistent with the observation that, during adolescence, individuals in medieval rural communities were beginning to take on adult tasks which would have been physically strenuous. However, it is unclear why individuals from Wharram Percy did not also form defects in early childhood as modern children appear to. A late age of occurrence appears consistent with published data which suggest a paucity of cases in non‐adults in British archaeological populations. Copyright © 2006 John Wiley & Sons, Ltd.     

Spinal pathological findings in ancient Egyptians of the Greco‐Roman period living in Bahriyah Oasis

The spine can provide a large amount of information about an individual's physical condition and possible lifestyle through palaeopathological investigations. The aim of this research was to study spinal diseases among Greco‐Roman ancient Egyptians from Bahriyah Oasis, and to compare them with those from Giza of the Old Kingdom. The material used in the study included 809 single vertebrae and 77 adult sacra of ancient Egyptians from the Greco‐Roman period (332–30 BC) that were excavated from Bahriyah Oasis. The spinal elements were examined for pathological conditions, degenerative diseases, trauma, congenital abnormalities, infectious diseases and neoplasms. The most common lesions of the spine were those due to degenerative processes. The articular facets were more affected than the vertebral bodies. Compression fractures of the bodies, mostly due to osteoporosis, were found in 1.44% and 5.07% of thoracic and lumbar vertebrae respectively. The percentage of spina bifida occulta among ancient Egyptians from Bahriyah Oasis was 62.33%, while among those from Giza was only 3.33%. Few cases of lumbar spondylolysis and one case of DISH were recorded. No cases of infectious or neoplastic diseases were found. Copyright © 2008 John Wiley & Sons, Ltd.     

Some types of vertebral pathologies in the Argar Culture (Bronze Age,SE Spain)

A collection of 1825 vertebrae belonging to 105 individuals from several Argaric Culture sites (Bronze Age, SE of Spain) were studied. Several pathologies that could provide information about activity patterns were analysed, including spondylolysis, compression fractures and Schmorl's nodes. Spondylolysis appears exclusively in men. Compression fractures seem to be more related to age (osteoporosis) and are more frequent in women, but without statistical significance. Schmorl's nodes affect a large number of the individuals studied, with a slight predominance in men; there are no differences by age. The results obtained were compared with the available archaeological and anthropological information, which shows a clear division of activities by sex in the Argaric population. The validity of studying these pathologies as activity patterns is discussed. Copyright © 2008 John Wiley & Sons, Ltd.     

Unilateral spondylolysis

Of 54 vertebrae with spondylolysis, five were found with a unilateral lesion. The unilateral lesion was sometimes associated with hypoplasia of the ipsilateral lamina or by differences in the size and position of the facet joints and by posterior wedging on the affected side. Radiologically there may be sclerosis in the pedicle on the normal side. In one case a healed fracture was noted on the apparently normal side indicating that the lesion originally had been bilateral.     

Sex,Socioeconomic and Regional Disparities in Age Trajectories of Childhood BMI,Underweight and Overweight in China

Using a longitudinal dataset from the China Health and Nutrition Survey (CHNS), growth-curve models were employed to examine age trajectories of body mass index (BMI) for 1694 subjects in China, who were aged 2–11 in 1993 and followed in four waves (1997, 2000, 2004 and 2006). Based on age- and sex-specific BMI cut-points recommended for international use, the prevalence rates of overweight and underweight in the transition from childhood to adulthood (age 6–18) were also predicted. Sex, family income, rural–urban residency and geographical location were found to be significantly associated with the onsets, slopes, and acceleration of age trajectories in BMI, overweight, and underweight (p < 0.01). Children who had lower prevalence of underweight in the transition from childhood to adulthood exhibited higher prevalence of overweight than their counterparts. Moreover, the age interval during which children were more vulnerable to an increase in underweight was different from that for overweight. There were substantial regional disparities in the age trajectories of childhood overweight and underweight. Whereas the analyses suggest that the dual burden of nutritional problems (the coexistence of overweight and underweight) in China, is more like two sides of a coin than two separate health issues; the critical age period for intervening in childhood overweight is different from that of childhood underweight. Geographical indicators of childhood obesity in China deserve further attention.     

Joseph Retinger's conception of and contribution to the early process of European integration

The origins of the European Union are especially connected to its so-called founding fathers. One of them was Polish politician Joseph Retinger, who represented a functionalist point of view. This article aims to throw light on Retinger's contribution to uniting the Old Continent. The method applied in this article is a comparative analysis of Retinger's ideas with the early phases of integration. Many significant initiatives taken with a view to the future integration of Europe, such as the founding of the European League for Economic Co-operation (1946), the Congress of Europe held in The Hague (1948), the founding of the European Movement (1948), or the establishment of the Council of Europe (1949) to give just a few examples can all be associated with Retinger's activity. The author concludes that the importance of Retinger's European activities (concerning the early period after the Second World War) were so huge that he should be ranked among the pioneers of the modern European Union.     

Several Infra‐cranial Non‐metric Variations in a Single Neolithic individual: A Common Genetic Underlying Predisposition?

Non‐metric variations have been the subject of anatomical and anthropological studies for more than a century. In this study, we present an individual from Sion (Canton of Valais, Southern Switzerland) dated from the Middle Neolithic who shows evidence for four non‐metric variations. This young adult male presents an os acromiale, spondylolysis, a bipartite patella, and bilateral calcaneus secundarius. These non‐metric variations have a low frequency in most populations (less than 10%), and for each of them the origin is usually considered to be genetic, environmental, or a combination of both. This case is of interest for understanding the potential genetic origin of these non‐metric variations as well as for demonstrating their usefulness in bioarcheological analysis. Copyright © 2016 John Wiley & Sons, Ltd.     

周代用鼎制度疏证

目次鼎实与鼎的类别一鼎实与鼎的类别二鼎制组合三中原地区用鼎制度四楚国用鼎制度五结语鼎是周代社会礼制生活的核心。冠、昏、祭、乡、射、朝     

Analysis of ante mortem trauma in three modern skeletal populations

When archaeological skeletons are assessed, the prevalence (and patterns of bone involvement) of trauma is important. The number and pattern of fractures can be used to gain insight into the occurrence of interpersonal violence, workload and living conditions. However, the question remains as to how these results should be interpreted—such as what constitutes high or low levels of trauma? The aim of this study was to investigate the occurrence of trauma in a population of modern Greeks living in Crete, as well as South African (SA) whites and blacks in the Pretoria Bone and Raymond Dart collections. The sample comprised mostly of older individuals (n = 90–100 within a sex‐population group). Each skeleton was studied for healed trauma. For the vertebrae, only spondylolysis was assessed. In the Greek sample, it was found that 42% of the males and 46% of females had at least one fracture, with corresponding figures of 63 and 44% for SA whites and 83 and 69% for SA blacks. Radius, rib and femur fractures were most common in Greeks, with skull, radius and ribs most common in SA whites and skull, ulna and ribs in SA blacks. These prevalences of trauma are high, but the composition of the samples (mostly of lower socio‐economic origin) should be kept in mind. It may also be questioned whether these individuals reflect the society as a whole. It seems that the fractures in Greeks are mostly related to old age due to falls and accidents (radius and hip fractures), while the SA black sample reflects high prevalences of interpersonal violence (such as cranial vault and ulna fractures). The SA white sample follows a comparatively moderate pattern of trauma. These comparative figures may be useful when assessing trauma in other skeletal populations. Copyright © 2009 John Wiley & Sons, Ltd.     

Age‐related variation in isotopic indicators of diet at medieval Kulubnarti,Sudanese Nubia

This study compares trends in dietary composition in two large cemetery populations from the site of Kulubnarti (AD 550–800) in Sudanese Nubia. Bone collagen and bone apatite carbonate were analysed to characterise stable carbon, nitrogen and oxygen isotopes. Previous research on these cemeteries has suggested marked differences in nutritional status and health between the populations. Contrary to expectations, there were no significant relationships between any isotopic indicators related to sex or cemetery of burial, suggesting no isotopically‐measurable differences in diet. However, collagen δ¹³C and δ¹⁵N were significantly related to age, suggesting age‐related differences in protein intake or other factors. Weaning trends are gradual and variable, with the range in δ¹⁵N values exceeding 4‰ among infants/young children (0–3 yrs) and standard deviations exceeding 1‰ in collagen δ¹³C and δ¹⁵N for both infants/young children and subadults (4–17 yrs). This suggests varied weaning strategies among both populations and variable diets prior to adulthood. Also observed was a distinct range of isotopic carbon and nitrogen values among individuals classified as subadults (4–17 yrs), who are depleted in collagen δ¹³C and δ¹⁵N relative to adults. However, both infants/young children and subadults are slightly enriched in δ¹⁸O relative to adults, which suggests the presence of non‐local individuals or age‐related variation in water sources. While most isotopic studies of age‐related dietary trends have focused on reconstructing the weaning process, this study presents findings that indicate tripartite isotopic trends distinguishing infancy, subadulthood and adulthood as separate dietary categories. Broad similarities are evident between the results presented here and those from several earlier studies of smaller populations and to nutritional studies of modern communities. These findings suggest that further research into health disparities at Kulubnarti should focus on non‐dietary causal factors, and more generally, that greater attention should be paid to subadulthood in palaeodiet studies. Copyright © 2006 John Wiley & Sons, Ltd.     

External Auditory Exostoses and its Relationship to Prehistoric Abalone Harvesting on Santa Rosa Island,California

Bioarchaeological research among prehistoric Pacific Coast populations has shown that external auditory exostoses (EAE) are found in high frequencies. On California's northern Channel Islands archaeological research has demonstrated that there was an intense exploitation of red abalone (Haliotis rufescens), particularly between ~8000 and 3500 years ago. If the Island Chumash were free‐diving for red abalone in subtidal waters, EAE should be prevalent in prehistoric populations from Santa Rosa Island. We recorded the presence or absence, number, side and severity of EAE growths for 207 adult individuals from three time periods on Santa Rosa Island. Our results show that ~11% of the total population was affected, including 22.5% of males and ~3.4% of females. The incidence among females increases from 0% in the Early period, to 2.6% in the Middle period, and 6.8% in the Late period. Overall these are lower rates than those reported for other Channel Island and Pacific Coast sites. Given the relatively low percentage of Santa Rosa Islanders affected with EAE, red abalones may have been harvested primarily in shallow waters rather than the deeper subtidal zone. Our data suggest that gender differences in food procurement activities existed on Santa Rosa Island throughout prehistory, congruent with the argument that EAE is an activity‐induced pathology that occurs with prolonged exposure to cold water and wind conditions. Copyright © 2015 John Wiley & Sons, Ltd.     

Contemporary visual art and the construction of identity: maintenance and revision processes in older adults

This article explores how older visitors use meanings created through encounters with contemporary visual art in art galleries for identity maintenance and revision processes. The analysis is based on the results of a 28-month study of the responses of older people to contemporary visual art in art galleries in north-east England, UK. The identity processes used in this study are those defined as maintenance and revision as understood by Kroger (2002) Identity processes and contents through the years of late adulthood. Identity, 2, (1), 81-99, Kroger and Adair (2008) Symbolic meanings of valued personal objects in identity transitions of late adulthood. Identity, 8, (1), 5-24. and Marcia (2002) Identity and psychosocial development in adulthood. Identity, 2, (1), 7-28. Respondents who did not have an existing identity-defining commitment towards art and who had less ability to decode the art works used the art to make symbolic links to aspects of their identity. The meanings created were then used to help satisfy current identity needs. In contrast, those with an existing commitment to art used the experience of the visits to deepen their current knowledge. Engaging with contemporary visual art facilitated identity processes that contributed to participants’ well-being. This study contributes to studies on identity by exploring how content and identity processes interact and provides new perspectives on the role of art in identity formation for older people. It also has significance for museum, gallery and heritage policy and practice.     

Identification of tarsal coalition and frequency estimates from skeletal samples

Tarsal coalition is a congenital defect that results when adjacent tarsals fail to separate properly during embryonic development. Anatomically, coalitions present as non‐osseous bridges of cartilage or fibrocartilage – and occasionally as osseous bridges – between two neighboring bones. In skeletons, non‐osseous tarsal coalitions are recognizable as matching lesions between two bones at predictable locations. These coalitions are of interest because they are known to be heritable and are therefore useful for tracing genetic relatives in archaeological cemeteries, because they can be misinterpreted in skeletons as trauma or joint disease, and because they can result in associated pathology. However, despite a considerable literature on tarsal coalition, estimates of coalition frequencies disagree considerably, perhaps due to biases inherent in clinical sampling. In order to gain a better estimate of tarsal coalition frequencies in human populations, data were gathered on 342 European‐Americans from the Terry Collection (Smithsonian Institution), 536 South Africans from the Dart Collection (University of Witwatersrand, South Africa), and 756 medieval Danish skeletons (Anthropological Database, Odense University). The Danish skeletons are archaeological, with sample sizes by coalition type ranging from 366–507 individuals. Examples of eight different types of intertarsal coalition were identified among the 1634 skeletons examined. Overall frequency estimates for tarsal coalition ranged from 2.1%–3.5%. South Africans exhibited significantly higher frequencies in the midfoot, with naviculocuneiform I coalition (1.0%) the most common type. Conversely, no coalitions of the midfoot were found among the Euro‐Americans or medieval Danes. Instead, these groups exhibited calcaneonavicular coalition as the most common type in the hindfoot (2.0% and 2.1% respectively), while calcaneonavicular coalition was among the least common in the South Africans (0.2%). Copyright © 2010 John Wiley & Sons, Ltd.     

Trauma and amputations in 19th century miners from Kimberley,South Africa

Trauma is the result of violent accidental or therapeutic events that cause physical or psychological injury. The frequencies and types of trauma within a population can give important information regarding their lifestyle as well as the quantity and quality of medical care available to them. The purpose of this study was to assess the incidence of trauma in the Gladstone sample population with regards to the presence of interpersonal violence a hazardous working environment strenuous working requirements and the availability of medical care. The individuals studied here were diamond miners from Kimberley dating to the late 19th century. A total of 107 well‐preserved skeletons were excavated from unmarked graves after accidental discovery. This sample included 86 males 15 females and 6 individuals of unknown sex. The majority of individuals (71%) were between 19 and 45 years of age. The remains were most likely those of migrant mine workers of low socioeconomic status who had passed away at the local hospitals. All bones were visually assessed for macroscopic indications of traumatic bone alterations and compared to standard palaeopathological texts and photographs. A total of 27% (n = 28) of the individuals in the sample presented with well‐healed healing or perimortem fractures. Fractures to the skull encompassed 49% (n = 20) of all the fractures that were observed. A total of six (6%) amputations were noted. Spondylolysis was observed in 7% (n = 7) of the individuals within the sample and longstanding subluxation was noted in two individuals. The high incidences of cranial fractures within this population are suggestive of high levels of interpersonal violence while long bone fractures spondylolysis and evidence of longstanding subluxations are indicative of the strenuous work requirements and the high‐risk environment to which these individuals were exposed. When considering the presence of well‐reduced fractures and healed amputations it seems that adequate medical care was available to at least some members of this community. Copyright © 2009 John Wiley & Sons Ltd. This article was published online on 17 February 2009. An error was subsequently identified. This notice is included in the online and print versions to indicate that both have been corrected 3 November 2009.     

Ancient injury recidivism: an example from the Kerma period of ancient Nubia

A topical trend in clinical research has been the study of repeat trauma, referred to by clinicians as “injury recidivism,” which lends itself to the assessment of accumulated injuries among ancient people. The present investigation examined the healed injuries among two archaeological skeletal samples from the Kerma period (ca. 2500–1500 BC) of Sudanese Nubia. Both groups were known to have a high prevalence of multiple trauma—80% of 54 adults from the rural sites (O16 and P37) located near Dongola and 42% of 212 adults from the urban site of Kerma sustained nonfatal injuries. It was observed that a higher frequency of multi‐injured adults displayed one or more violence‐associated injury (cranial trauma, parry fracture). When all injuries were considered 38% of individuals with violence‐related injuries had other traumatic lesions in contrast to 22% of individuals who experienced injuries associated with accidental falls (e.g., Colles', Smiths', Galeazzi, and paired forearm fractures), although this difference was not significant. When only the skulls and long bones were evaluated 81% of adults with multiple injuries to these major bones bore one or more violence‐related injuries, while 60% of adults with single injuries sustained violence‐related injuries. Most individuals with multiple injuries were male and less than 35 years of age; there was no significant difference in the frequency of violence‐ or accident‐related multiple injury between the rural and urban communities. Although it cannot be established whether or not some of an individual's injuries were experienced during simultaneous or independent incidents, the pattern of multiple injury among these two ancient Nubian skeletal samples reflected the profile of injury recidivism observed by modern clinicians cross‐culturally. Copyright © 2002 John Wiley & Sons, Ltd.     

Boundary Crossings: Transitions from Childhood to Adulthood

In this paper I argue that the boundary between childhood and adulthood is very difficult to define. Notably, it is blurred by the ambiguous period of 'youth'. I therefore draw upon Beck's theoretical work on individualisation and the life-course, which has been influential in youth research in sociology and youth studies, to provide a framework for reviewing some of the processes through which young people make the transition from childhood to adulthood. In the conclusion I reflect on the need to explore the importance of the different spaces implicit in young people's transitions, and the interconnections between them. I also highlight how distinctions between the states of childhood and adulthood are not clear-cut, nor are transitions a one-off or one-way process. Rather I draw attention to the way that changes associated with growing up may or may not be connected, and may occur simultaneously, serially or not at all. Finally, I point out the limitations of normative models of transition given the way that other social differences such as gender, class and sexuality intersect with the categories children and youth.