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Osipov B, Harrington L, Cowgill L, MacKinnon M, Kurki H. Asymmetry in linear measurements and cross-sectional geometry in the humerus during ontogeny. AMERICAN JOURNAL OF BIOLOGICAL ANTHROPOLOGY 2024; 184:e24940. [PMID: 38602232 DOI: 10.1002/ajpa.24940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 02/28/2024] [Accepted: 04/02/2024] [Indexed: 04/12/2024]
Abstract
OBJECTIVES Adult upper limb asymmetry is used to reconstruct behavior. However, the developmental trajectory of asymmetry in bone length, cross-sectional geometry (CSG), and joint dimensions is poorly understood. This study examines the development trajectory of humeral asymmetry and if asymmetry in bone length, joint size, and CSG develop in concert. MATERIALS AND METHODS Linear measurements of bone length and metaphyseal/epiphyseal breadth, bending rigidity (Imax and Imin), and cross-sectional shape (Imax/Imin) at 30%, 50%, and 70% of bone length were acquired from 3D models of humeri from four skeletal samples of prehistoric hunter-gatherer populations (n = 82). Dental age cohorts were used to assess ontogenetic trends. Percent absolute (%AA) and directional (%DA) asymmetry were calculated for paired measures. Percentage of matching direction of asymmetry across variables and correlation analysis tested relationships between variables. RESULTS Within the total pooled sample, Imax shows the highest %AA and %DA, followed by shape and linear dimensions. Asymmetry is lowest in neonates and increases with age, particularly %DA of Imax in mid-proximal sections. Correlations among variables are low to moderate and strongest between Imax measures. Matching direction of asymmetry between variables is low and generally increases with age. DISCUSSION Higher correlations with age in CSG likely indicate greater responsiveness to mechanical loading. Low correlations in magnitude of asymmetry and side dominance suggest independence in the development of asymmetry between maximum rigidity, shape, and linear measures. Differences in how asymmetric loading affects the ontogeny of linear and CSG variables may account for the heterogeneous development of asymmetry.
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Affiliation(s)
- Benjamin Osipov
- Department of Orthopaedic Surgery, University of California, Davis Health, Sacramento, California, USA
| | - Lesley Harrington
- Department of Anthropology, University of Alberta, Edmonton, Alberta, Canada
| | - Libby Cowgill
- Department of Anthropology, University of Missouri, Columbia, Missouri, USA
| | - Marla MacKinnon
- Department of Anthropology, University of Victoria, Victoria, British Columbia, Canada
| | - Helen Kurki
- Department of Anthropology, University of Victoria, Victoria, British Columbia, Canada
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Stark S. Technical note: Capturing shape-Linear measurements and geometric morphometrics of the immature femora. AMERICAN JOURNAL OF BIOLOGICAL ANTHROPOLOGY 2024; 184:e24949. [PMID: 38770662 DOI: 10.1002/ajpa.24949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 04/10/2024] [Accepted: 04/24/2024] [Indexed: 05/22/2024]
Abstract
OBJECTIVES Growth and developmental studies have been a prominent theme in bioarchaeology. These works traditionally focus on metric measurements of long bone length and age-at-death or cross-sectional geometric studies with the use of computed tomography scans for questions on growth and mobility. However, teasing apart aspects of size and shape have been difficult due to the cylindrical nature of immature long bones. This research investigates the methodological use of surface geometries from linear measurements and geometric morphometric methods (GMM) to answer questions on mobility and allometry during childhood. MATERIALS AND METHODS Left femora were selected from 42 individuals ranging from fetal to 12 years of age from medieval St Gregory's Priory, Canterbury, UK. Femora were digitized with structured-light-scanning for auto3dgm analysis and measurements were obtained from physical caliper measurements. Individuals were put into age groups based on biomechanical milestones during this age range. RESULTS Ratio and GMM confirm hypotheses of allometry and biomechanical milestones. Geometric morphometrics, however, detects more subtle differences in mobility at each age group. DISCUSSION The findings of this preliminary study support the potential use of GMM of immature femora, while indicating that the extent in range of mobility that can occur varies at different biological milestones.
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Affiliation(s)
- Sarah Stark
- Investigative Science, Historic England, Portsmouth, UK
- Department of Archaeology, University of Southampton, Southampton, UK
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3
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Welsh H, Brickley MB. Investigating femoral growth disruption in subadults from the 10th-13th century St. Étienne cemetery of Toulouse, France. AMERICAN JOURNAL OF BIOLOGICAL ANTHROPOLOGY 2024:e24984. [PMID: 38899835 DOI: 10.1002/ajpa.24984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 05/27/2024] [Accepted: 06/02/2024] [Indexed: 06/21/2024]
Abstract
OBJECTIVES The skeleton embodies an individual's environment and lived experiences. Studying childhood growth disruption can, therefore, aid in understanding the experiences of children in the past. This study evaluates growth disruption in a medieval Toulousian subadult sample to explore factors that may have influenced childhood growth and mortality at this site and to assess the utility of Harris line (HL) interpretations in bioarchaeology. MATERIALS AND METHODS Femoral growth disruption was assessed in n = 71 subadults (0.125-12.42 years) from the 10th-13th century St. Étienne cemetery of Toulouse, France, using femoral length, total area, cortical area, and relative cortical area. Femoral radiographs were assessed for HLs. To determine the prevalence of growth disruption, z-scores were calculated using data from the Denver growth study. RESULTS The majority of subadults in this sample suffered from femoral growth disruption. Young children (1.0-3.99 years) were the most affected, with >65% experiencing reduced appositional growth and linear growth stunting at time-of-death. Additionally, while many individuals presented with observable HLs, linear and appositional growth did not significantly differ between individuals with and without HLs. DISCUSSION Maternal malnutrition and inadequate complementary feeding practices likely contributed to the high prevalence of growth disruption among the youngest individuals in the study. The older children and adolescents buried at St. Étienne experienced an amelioration in growth deficits, indicating an improvement in nutrition and/or disease load. The results of this study suggest that more consideration is required when interpreting the presence/absence of HLs, and that studies assessing HLs may benefit from using a more individualistic approach.
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Affiliation(s)
- H Welsh
- Department of Anthropology, University of Toronto, Toronto, Ontario, Canada
| | - M B Brickley
- Department of Anthropology, McMaster University, Hamilton, Ontario, Canada
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Hernandez PA, Bradford JC, Brahmachary P, Ulman S, Robinson JL, June RK, Cucchiarini M. Unraveling sex-specific risks of knee osteoarthritis before menopause: Do sex differences start early in life? Osteoarthritis Cartilage 2024:S1063-4584(24)01172-5. [PMID: 38703811 DOI: 10.1016/j.joca.2024.04.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 03/15/2024] [Accepted: 04/24/2024] [Indexed: 05/06/2024]
Abstract
OBJECTIVE Sufficient evidence within the past two decades have shown that osteoarthritis (OA) has a sex-specific component. However, efforts to reveal the biological causes of this disparity have emerged more gradually. In this narrative review, we discuss anatomical differences within the knee, incidence of injuries in youth sports, and metabolic factors that present early in life (childhood and early adulthood) that can contribute to a higher risk of OA in females. DESIGN We compiled clinical data from multiple tissues within the knee joint-since OA is a whole joint disorder-aiming to reveal relevant factors behind the sex differences from different perspectives. RESULTS The data gathered in this review indicate that sex differences in articular cartilage, meniscus, and anterior cruciate ligament are detected as early as childhood and are not only explained by sex hormones. Aiming to unveil the biological causes of the uneven sex-specific risks for knee OA, we review the current knowledge of sex differences mostly in young, but also including old populations, from the perspective of (i) human anatomy in both healthy and pathological conditions, (ii) physical activity and response to injury, and (iii) metabolic signatures. CONCLUSIONS We propose that to close the gap in health disparities, and specifically regarding OA, we should address sex-specific anatomic, biologic, and metabolic factors at early stages in life, as a way to prevent the higher severity and incidence of OA in women later in life.
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Affiliation(s)
- Paula A Hernandez
- Department of Orthopaedic Surgery, University of Texas Southwestern Medical Center, Dallas, TX, 75390, USA; Department of Biomedical Engineering, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
| | | | - Priyanka Brahmachary
- Department of Mechanical & Industrial Engineering, Montana State University, Bozeman, MT 59717, USA.
| | - Sophia Ulman
- Department of Orthopaedic Surgery, University of Texas Southwestern Medical Center, Dallas, TX, 75390, USA; Movement Science Laboratory, Scottish Rite for Children, Frisco, TX 75034, USA.
| | - Jennifer L Robinson
- Department of Mechanical Engineering, University of Washington, Seattle, WA 98195, USA; Department of Orthopaedics and Sports Medicine, University of Washington, Seattle, WA 98195, USA; Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA 98109, USA.
| | - Ronald K June
- Department of Mechanical & Industrial Engineering, Montana State University, Bozeman, MT 59717, USA.
| | - Magali Cucchiarini
- Center of Experimental Orthopaedics, Saarland University Medical Center, Homburg/Saar D-66421, Germany.
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Cowgill L, Harrington L, MacKinnon M, Kurki HK. Gains in relative cortical area during growth and their relationship to nutrition, body size, and physical activity. AMERICAN JOURNAL OF BIOLOGICAL ANTHROPOLOGY 2023; 182:177-193. [PMID: 37377180 DOI: 10.1002/ajpa.24805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 03/17/2023] [Accepted: 05/27/2023] [Indexed: 06/29/2023]
Abstract
OBJECTIVES In studies of growth in the past, low percentage of cortical area (%CA) is commonly attributed to poor general health, due to factors including poor nutrition, low socioeconomic status, or other physiological stressors. What constitutes low relative cortical dimensions has not been established across a diverse range of human skeletal samples. This study examines %CA in a large immature skeletal sample to establish typical variation in humans with consideration of both body mass and subsistence strategy. MATERIALS AND METHODS Percentage of cortical area was calculated at the midshaft of the humerus, femur, and tibia in seven skeletal samples. Age at death was estimated from dental development, and body mass from bone dimensions. Patterns of %CA with age and log-transformed body mass were examined in the pooled sample and compared among samples using LOESS regression, Welch's ANOVA, and Kruskal-Wallis tests. RESULTS Across all samples, %CA displays a generally non-linear pattern, but variation in %CA with age was high, particularly in samples with lower levels of %CA. There was no relationship between %CA and age-adjusted body mass. DISCUSSION The lack of a relationship between %CA and body mass suggests that %CA should not be used as an indicator of mechanical loading. The variation present across samples implies that appositional bone growth is affected by physiological stress in varying ways. Without a deeper understanding of what is "typical" for long bone development, it is impossible to draw conclusions about individual or population level health.
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Affiliation(s)
- Libby Cowgill
- Department of Anthropology, University of Missouri, Columbia, Missouri, USA
| | - Lesley Harrington
- Department of Anthropology, University of Alberta, Edmonton, Alberta, Canada
| | - Marla MacKinnon
- Department of Anthropology, University of Victoria, Victoria, British Columbia, Canada
| | - Helen K Kurki
- Department of Anthropology, University of Victoria, Victoria, British Columbia, Canada
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Deng P, Ozaki H, Natsume T, Ke D, Lu D, Suzuki K, Naito H. Associations of Morphological Changes in Skeletal Muscles of Preschool Children in China Following Physical Activity. CHILDREN (BASEL, SWITZERLAND) 2023; 10:1538. [PMID: 37761499 PMCID: PMC10529834 DOI: 10.3390/children10091538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 08/26/2023] [Accepted: 09/06/2023] [Indexed: 09/29/2023]
Abstract
PURPOSE Physical activity (PA) is likely to be the most important modifiable factor in skeletal muscle development. However, the influence of PA on the skeletal muscle of preschool children has not been thoroughly investigated. The main objective of this study was to quantitatively measure PA, and then, to assess whether associations exist between site-specific muscle changes and PA in relation to sex and weight statuses in preschool children aged 3 to 4 years. METHODS A total of 86 healthy preschool children, aged 3-4 years, were instructed to wear an accelerometer for seven consecutive days. The number of steps taken daily, and minutes spent in moderate-vigorous PA (MVPA) and total PA (TPA) were recorded. Muscle thickness was measured by B-mode ultrasonography using a 5-18 MHz scanning head. Muscle thickness was measured at seven sites: the lateral forearm, upper arm, abdomen, anterior and posterior thigh, and anterior and posterior lower leg. RESULTS There was no significant difference between boys and girls in terms of MVPA and TPA on weekdays and weekends. According to the linear regression models, after adjusting for daylight duration, the muscle of the posterior thigh was significantly positively associated (p < 0.05) with daily steps and MVPA on weekdays for boys and girls, respectively. CONCLUSIONS We found that the muscle thickness of the posterior thigh in preschool children was significantly positively associated with PA, as measured by daily steps and MVPA. We suggest that for the overall health and well-being of preschool children, the levels of PA should be maintained and/or increased, and preferably transformed into a regular part of daily living.
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Affiliation(s)
- Pengyu Deng
- Graduate School of Health and Sports Science, Juntendo University, Chiba 270-1695, Japan; (K.S.); (H.N.)
- Institute of Health and Sports Science & Medicine, Juntendo University, Chiba 270-1695, Japan; (H.O.); (D.K.)
| | - Hayao Ozaki
- Institute of Health and Sports Science & Medicine, Juntendo University, Chiba 270-1695, Japan; (H.O.); (D.K.)
- School of Sport and Health Science, Tokai Gakuen University, Miyoshi 470-0207, Japan
| | - Toshiharu Natsume
- Department of Human Structure & Function, Tokai University School of Medicine, Isehara 259-1193, Japan;
| | - Dandan Ke
- Institute of Health and Sports Science & Medicine, Juntendo University, Chiba 270-1695, Japan; (H.O.); (D.K.)
- School of Public Health, Fudan University, Shanghai 200433, China
| | - Dajiang Lu
- School of Kinesiology, Shanghai University of Sport, Shanghai 200438, China;
| | - Koya Suzuki
- Graduate School of Health and Sports Science, Juntendo University, Chiba 270-1695, Japan; (K.S.); (H.N.)
- Institute of Health and Sports Science & Medicine, Juntendo University, Chiba 270-1695, Japan; (H.O.); (D.K.)
| | - Hisashi Naito
- Graduate School of Health and Sports Science, Juntendo University, Chiba 270-1695, Japan; (K.S.); (H.N.)
- Institute of Health and Sports Science & Medicine, Juntendo University, Chiba 270-1695, Japan; (H.O.); (D.K.)
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7
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Ruff CB, Wood BA. The estimation and evolution of hominin body mass. Evol Anthropol 2023; 32:223-237. [PMID: 37335778 DOI: 10.1002/evan.21988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 03/15/2023] [Accepted: 05/29/2023] [Indexed: 06/21/2023]
Abstract
Body mass is a critical variable in many hominin evolutionary studies, with implications for reconstructing relative brain size, diet, locomotion, subsistence strategy, and social organization. We review methods that have been proposed for estimating body mass from true and trace fossils, consider their applicability in different contexts, and the appropriateness of different modern reference samples. Recently developed techniques based on a wider range of modern populations hold promise for providing more accurate estimates in earlier hominins, although uncertainties remain, particularly in non-Homo taxa. When these methods are applied to almost 300 Late Miocene through Late Pleistocene specimens, the resulting body mass estimates fall within a 25-60 kg range for early non-Homo taxa, increase in early Homo to about 50-90 kg, then remain constant until the Terminal Pleistocene, when they decline.
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Affiliation(s)
- Christopher B Ruff
- Center for Functional Anatomy and Evolution, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Bernard A Wood
- Center for the Advanced Study of Human Paleobiology, George Washington University, Washington, District of Columbia, USA
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Suntornsaratoon P, Thongklam T, Saetae T, Kodmit B, Lapmanee S, Malaivijitnond S, Charoenphandhu N, Krishnamra N. Running exercise with and without calcium supplementation from tuna bone reduced bone impairment caused by low calcium intake in young adult rats. Sci Rep 2023; 13:9568. [PMID: 37311761 DOI: 10.1038/s41598-023-36561-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Accepted: 06/06/2023] [Indexed: 06/15/2023] Open
Abstract
Inadequate calcium intake during childhood and adolescence is detrimental to bone metabolism. Here, we postulated that calcium supplement prepared from tuna bone with tuna head oil should benefit for skeletal development than CaCO3. Forty female 4-week-old rats were divided into calcium-replete diet (0.55% w/w, S1, n = 8) and low-calcium groups (0.15% w/w for 2 weeks; L; n = 32). Then L were subdivided into 4 groups (8/group), i.e., remained on L, L + tuna bone (S2), S2 + tuna head oil + 25(OH)D3 and S2 + 25(OH)D3. Bone specimens were collected at week 9. We found that 2 weeks on low calcium diet led to low bone mineral density (BMD), reduced mineral content, and impaired mechanical properties in young growing rats. Intestinal fractional calcium absorption also increased, presumably resulting from higher plasma 1,25(OH)2D3 (1.712 ± 0.158 in L vs. 1.214 ± 0.105 nM in S1, P < 0.05). Four-week calcium supplementation from tuna bone further increased calcium absorption efficacy, which later returned to the basal level by week 9. Calcium supplementation successfully restored BMD, bone strength and microstructure. However, 25(OH)D3 + tuna head oil + tuna bone showed no additive effect. Voluntary running also effectively prevented bone defects. In conclusion, both tuna bone calcium supplementation and exercise are effective interventions for mitigating calcium-deficient bone loss.
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Affiliation(s)
- Panan Suntornsaratoon
- Department of Physiology, Faculty of Science, Mahidol University, Bangkok, Thailand.
- Center of Calcium and Bone Research, Faculty of Science, Mahidol University, Bangkok, Thailand.
| | - Thachakorn Thongklam
- Global Innovation Center, Thai Union Group Public Company Limited, Bangkok, Thailand
| | - Thaweechai Saetae
- Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Buapuengporn Kodmit
- Department of Physiology, Faculty of Science, Mahidol University, Bangkok, Thailand
- Center of Calcium and Bone Research, Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Sarawut Lapmanee
- Department of Basic Medical Sciences, Faculty of Medicine, Siam University, Bangkok, Thailand
| | - Suchinda Malaivijitnond
- Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
- National Primate Research Center of Thailand, Chulalongkorn University, Saraburi, Thailand
| | - Narattaphol Charoenphandhu
- Department of Physiology, Faculty of Science, Mahidol University, Bangkok, Thailand
- Center of Calcium and Bone Research, Faculty of Science, Mahidol University, Bangkok, Thailand
- Institute of Molecular Biosciences, Mahidol University, Nakhon Pathom, Thailand
- The Academy of Science, The Royal Society of Thailand, Dusit, Bangkok, Thailand
| | - Nateetip Krishnamra
- Department of Physiology, Faculty of Science, Mahidol University, Bangkok, Thailand
- Center of Calcium and Bone Research, Faculty of Science, Mahidol University, Bangkok, Thailand
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Scott R, James R, Barnett CT, Sale C, Varley I. Perspectives from research and practice: A survey on external load monitoring and bone in sport. Front Sports Act Living 2023; 5:1150052. [PMID: 37181251 PMCID: PMC10166824 DOI: 10.3389/fspor.2023.1150052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 03/28/2023] [Indexed: 05/16/2023] Open
Abstract
Introduction There is limited information regarding the association between external load and estimated bone load in sport, which may be important due to the influence exercise can have on bone accrual and injury risk. The aim of this study was to identify external load measuring tools used by support staff to estimate bone load and assess if these methodologies were supported in research. Methods A survey was comprised of 19 multiple choice questions and the option to elaborate on if/how they monitor external load and if/how they used them to estimate bone load. A narrative review was performed to assess how external load is associated to bone in research. Results Participants were required to be working as support staff in applied sport. Support staff (n = 71) were recruited worldwide with the majority (85%) working with professional elite athletes. 92% of support staff monitored external load in their organisation, but only 28% used it to estimate bone load. Discussion GPS is the most commonly used method to estimate bone load, but there is a lack of research assessing GPS metrics with bone load. Accelerometry and force plates were among the most prevalent methods used to assess external load, but a lack of bone specific measurements were reported by support staff. Further research exploring how external load relates to bone is needed as there is no consensus on which method of external load is best to estimate bone load in an applied setting.
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Affiliation(s)
- Reece Scott
- Musculoskeletal, Physical Activity and Metabolic Health Research Group, Sport, Health and Performance Enhancement Research Centre, School of Science and Technology, Nottingham Trent University, Nottingham, United Kingdom
| | - Ruth James
- Musculoskeletal, Physical Activity and Metabolic Health Research Group, Sport, Health and Performance Enhancement Research Centre, School of Science and Technology, Nottingham Trent University, Nottingham, United Kingdom
| | - Cleveland T. Barnett
- Musculoskeletal, Physical Activity and Metabolic Health Research Group, Sport, Health and Performance Enhancement Research Centre, School of Science and Technology, Nottingham Trent University, Nottingham, United Kingdom
| | - Craig Sale
- Institute of Sport, Department of Sport and Exercise Sciences, Manchester Metropolitan University, Manchester, United Kingdom
| | - Ian Varley
- Musculoskeletal, Physical Activity and Metabolic Health Research Group, Sport, Health and Performance Enhancement Research Centre, School of Science and Technology, Nottingham Trent University, Nottingham, United Kingdom
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Welsh H, Brickley MB. Pathology or expected morphology? Investigating patterns of cortical porosity and trabecularization during infancy and early childhood. Anat Rec (Hoboken) 2023; 306:354-365. [PMID: 36116138 DOI: 10.1002/ar.25081] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 08/15/2022] [Accepted: 09/08/2022] [Indexed: 01/25/2023]
Abstract
Increased cortical porosity is associated with a heightened risk of skeletal fragility due to bone loss and structural decay in adults. However, few studies have examined the etiology of cortical porosity in infants and children. This study examines whether age-related changes in femoral growth and locomotor development influence femoral midshaft cortical porosity in a sample of 48 individuals (fetal to 3.99 years) from the 10th-13th century cemetery of St. Étienne de Toulouse, France. Histological sections were prepared and imaged using light microscopy. Midshaft geometric variables such as total area, cortical area, and pore area were calculated using BoneJ. Increased porosity and cortical trabecularization were found to be significantly associated with age, being almost exclusively present in individuals aged 0.5-1.99 years. At approximately 6 months of age infants typically begin engaging in regular femoral loading and experience an acceleration in growth. The observed increase in midshaft porosity and trabecularization, therefore, likely results from the reorganization and redistribution of cortical bone, stimulated by increased growth velocity and the onset of weight-bearing activities. The reduction in cortical porosity and trabecularization in individuals aged 2.0-3.99 years indicates that children are approaching some sort of homeostasis as growth velocity slows and their femora adapt to consistent loading. Understanding what expected skeletal development looks like is necessary when conducting bioarcheological studies and this study provides evidence for a pattern of transient midshaft porosity during infancy and early childhood.
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Affiliation(s)
- Hayley Welsh
- Department of Anthropology, University of Toronto, Toronto, Ontario, Canada
| | - Megan B Brickley
- Department of Anthropology, McMaster University, Hamilton, Ontario, Canada
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11
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Cartilage thickness and bone shape variations as a function of sex, height, body mass, and age in young adult knees. Sci Rep 2022; 12:11707. [PMID: 35810204 PMCID: PMC9271066 DOI: 10.1038/s41598-022-15585-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 06/27/2022] [Indexed: 11/22/2022] Open
Abstract
The functional relationship between bone and cartilage is modulated by mechanical factors. Scarce data exist on the relationship between bone shape and the spatial distribution of cartilage thickness. The aim of the study was to characterise the coupled variation in knee bone morphology and cartilage thickness distributions in knees with healthy cartilage and investigate this relationship as a function of sex, height, body mass, and age. MR images of 51 knees from young adults (28.4 ± 4.1 years) were obtained from a previous study and used to train a statistical shape model of the femur, tibia, and patella and their cartilages. Five multiple linear regression models were fitted to characterise morphology as a function of sex, height, body mass, and age. A logistic regression classifier was fitted to characterise morphological differences between males and females, and tenfold cross-validation was performed to evaluate the models’ performance. Our results showed that cartilage thickness and its distribution were coupled to bone morphology. The first five shape modes captured over 90% of the variance and described coupled changes to the bone and spatial distribution of cartilage thickness. Mode 1 (size) was correlated to sex (p < 0.001) and height (p < 0.0001). Mode 2 (aspect ratio) was also correlated to sex (p = 0.006) and height (p = 0.017). Mode 4 (condylar depth) was correlated to sex only (p = 0.024). A logistic regression model trained on modes 1, 2, and 4 could classify sex with an accuracy of 92.2% (95% CI [81.1%, 97.8%]). No other modes were influenced by sex, height, body mass, or age. This study demonstrated the coupled relationship between bone and cartilage, showing that cartilage is thicker with increased bone size, diaphysis size, and decreased femoral skew. Our results show that sex and height influence bone shape and the spatial distribution of cartilage thickness in a healthy young adult population, but body mass and age do not.
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12
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Pietrobelli A, Marchi D, Belcastro MG. The relationship between bipedalism and growth: A metric assessment in a documented modern skeletal collection (Certosa Collection, Bologna, Italy). AMERICAN JOURNAL OF BIOLOGICAL ANTHROPOLOGY 2022; 177:669-689. [PMID: 36787708 PMCID: PMC9299160 DOI: 10.1002/ajpa.24440] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 09/23/2021] [Accepted: 10/18/2021] [Indexed: 12/15/2022]
Abstract
OBJECTIVES Long bone variations during growth are susceptible to the combined action of nutritional, hormonal, and genetic factors that may modulate the mechanical forces acting upon growing individuals as they progressively acquire a mature gait. In this work, we explore diaphyseal length and breadth variations of tibia and fibula during ontogeny (a) to test the presence of changes in relation to early toddling, and (b) to further our understanding of developmental patterns in relation to sex. MATERIALS AND METHODS Lengths, breadths, and indices were analyzed on right and left leg bones of 68 subadult individuals (Human Identified Skeletal Collection of the University of Bologna, Italy). Analyses included intersex and age classes (1, 0-1 year; 2, 1.1-3 years; 3, 3.1-6 years) comparisons, linear regressions with age and assessment of correlation among tibial and fibular measurements, as well as principal component analysis. RESULTS A significant difference emerged among age class 1 and the others. Age class 1 and 3 differ between them, while age class 2 overlaps with the others. No sex dimorphism was detected. All measurements were strongly correlated with age. Tibial and fibular measurements correlated with each other. CONCLUSIONS Our results relate the progressive emergence of toddling attempts in growing individuals at the end of the first year of age. No significant sex differences were found, suggesting that tibial and fibula growth might diverge between sexes in later childhood. We provide quantitative data regarding tibial and fibular linear growth and its timing in a modern documented osteological sample from Italy.
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Affiliation(s)
- Annalisa Pietrobelli
- Department of Biological, Geological and Environmental SciencesAlma Mater Studiorum‐University of BolognaBolognaItaly
| | - Damiano Marchi
- Department of BiologyUniversity of PisaPisaItaly,Evolutionary Studies Institute and Centre for Excellence in PalaeoSciencesUniversity of the WitwatersrandJohannesburgSouth Africa,Natural History Museum of the University of PisaCalciItaly
| | - Maria Giovanna Belcastro
- Department of Biological, Geological and Environmental SciencesAlma Mater Studiorum‐University of BolognaBolognaItaly
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13
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Ochocki DN, Loflin BE, Ahn T, Colglazier KA, Young AR, Snider AA, Bueckers EP, Wojtys EM, Schlecht SH. Endurance running during late murine adolescence results in a stronger anterior cruciate ligament and flatter posterior tibial slopes compared to controls. J Exp Orthop 2022; 9:3. [PMID: 34978644 PMCID: PMC8724477 DOI: 10.1186/s40634-021-00439-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 11/24/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Anterior cruciate ligament (ACL) injury rates continue to rise among youth involved in recreational and competitive athletics, requiring a better understanding of how the knee structurally and mechanically responds to activity during musculoskeletal growth. Little is understood about how anatomical risk factors for ACL injury (e.g., small ACL size, narrow intercondylar notch, and steep posterior tibial slope) develop and respond to increased physical activity throughout growth. We hypothesized that the ACL-complex of mice engaged in moderate to strenuous physical activity (i.e., endurance running) throughout late adolescence and young adulthood would positively functionally adapt to repetitive load perturbations. METHODS Female C57BL6/J mice (8 weeks of age) were either provided free access to a standard cage wheel with added resistance (n = 18) or normal cage activity (n = 18), for a duration of 4 weeks. Daily distance ran, weekly body and food weights, and pre- and post-study body composition measures were recorded. At study completion, muscle weights, three-dimensional knee morphology, ACL cross-sectional area, and ACL mechanical properties of runners and nonrunners were quantified. Statistical comparisons between runners and nonrunners were assessed using a two-way analysis of variance and a Tukey multiple comparisons test, with body weight included as a covariate. RESULTS Runners had larger quadriceps (p = 0.02) and gastrocnemius (p = 0.05) muscles, but smaller hamstring (p = 0.05) muscles, compared to nonrunners. Though there was no significant difference in ACL size (p = 0.24), it was 13% stronger in runners (p = 0.03). Additionally, both the posterior medial and lateral tibial slopes were 1.2 to 2.2 degrees flatter than those of nonrunners (p < 0.01). CONCLUSIONS Positive functional adaptations of the knee joint to moderate to strenuous exercise in inbred mice offers hope that that some anatomical risk factors for ACL injury may be reduced through habitual physical activity. However, confirmation that a similar response to loading occurs in humans is needed.
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Affiliation(s)
- Danielle N Ochocki
- Department of Orthopaedic Surgery, Indiana University School of Medicine, VanNuys Medical Science Building, Room 0028, 635 Barnhill Drive, Indianapolis, IN, 46202, USA
| | - Benjamin E Loflin
- Department of Orthopaedic Surgery, Indiana University School of Medicine, VanNuys Medical Science Building, Room 0028, 635 Barnhill Drive, Indianapolis, IN, 46202, USA
| | - Taeyong Ahn
- Department of Orthopaedic Surgery, Indiana University School of Medicine, VanNuys Medical Science Building, Room 0028, 635 Barnhill Drive, Indianapolis, IN, 46202, USA
| | - Kaitlyn A Colglazier
- Department of Biomedical Engineering, Indiana University Purdue University-Indianapolis, Indianapolis, IN, USA
| | - Andrew R Young
- Department of General Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Anna A Snider
- Department of Orthopaedic Surgery, Indiana University School of Medicine, VanNuys Medical Science Building, Room 0028, 635 Barnhill Drive, Indianapolis, IN, 46202, USA
| | - Elizabeth P Bueckers
- Department of Orthopaedic Surgery, Indiana University School of Medicine, VanNuys Medical Science Building, Room 0028, 635 Barnhill Drive, Indianapolis, IN, 46202, USA
| | - Edward M Wojtys
- Department of Orthopaedic Surgery, University of Michigan, Ann Arbor, MI, USA
| | - Stephen H Schlecht
- Department of Orthopaedic Surgery, Indiana University School of Medicine, VanNuys Medical Science Building, Room 0028, 635 Barnhill Drive, Indianapolis, IN, 46202, USA. .,Department of Biomedical Engineering, Indiana University Purdue University-Indianapolis, Indianapolis, IN, USA.
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14
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Turcotte CM, Rabey KN, Green DJ, McFarlin SC. Muscle attachment sites and behavioral reconstruction: An experimental test of muscle-bone structural response to habitual activity. AMERICAN JOURNAL OF BIOLOGICAL ANTHROPOLOGY 2022; 177:63-82. [PMID: 36787715 DOI: 10.1002/ajpa.24410] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 08/11/2021] [Accepted: 09/13/2021] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Behavioral reconstruction from muscle attachment sites (entheses) is a common practice in anthropology. However, experimental evidence provides mixed support for the assumed association between enthesis size and shape with changes in habitual activity. In this study, a laboratory mouse model was used to experimentally test whether activity level and type alters muscle architecture and the underlying bone cross-sectional geometry of entheses in order to assess the underlying assumption that behavioral changes lead to quantifiable differences in both muscle and enthesis morphology. MATERIALS AND METHODS Female wild-type mice were separated into one control group and two experimentally increased activity groups (running, climbing) over an 11-week study period. At the start of the experiment, half of the mice were 4 weeks and half were 7 weeks of age. The postmortem deltoideus and biceps brachii muscles were measured for potential force production (physiological cross-sectional area) and potential muscle excursion (fiber length). Bone cross-sectional geometry variables were measured from microCT scans of the humerus and radius at the enthesis and non-enthesis regions of interest across activity groups. RESULTS Activity level and type altered potential force production and potential muscle excursion of both muscles in the younger cohort. We observed differences in cortical bone geometry in both the humerus enthesis and radius non-enthesis region driven exclusively among the younger wheel-running mice. DISCUSSION These results indicate that in addition to muscle architectural changes, bone structural properties at the enthesis do show an adaptive response to increased activity, such as running but only during earlier development. However, further research is required in order to apply these findings to the reconstruction of living behavior from anthropological specimens.
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Affiliation(s)
- Cassandra M Turcotte
- Department of Anthropology, New York University, New York, New York, USA.,New York Consortium in Evolutionary Primatology, New York, New York, USA.,Department of Anthropology, Center for the Advanced Study of Human Paleobiology, The George Washington University, Washington, District of Columbia, USA
| | - Karyne N Rabey
- Division of Anatomy, Department of Surgery, University of Alberta, Edmonton, Alberta, Canada.,Department of Anthropology, University of Alberta, Edmonton, Alberta, Canada
| | - David J Green
- Department of Anthropology, Center for the Advanced Study of Human Paleobiology, The George Washington University, Washington, District of Columbia, USA.,Department of Anatomy, Campbell University School of Osteopathic Medicine, Buies Creek, North Carolina, USA
| | - Shannon C McFarlin
- Department of Anthropology, Center for the Advanced Study of Human Paleobiology, The George Washington University, Washington, District of Columbia, USA
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15
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Bertocci G, Brown NP, Thompson A, Bertocci K, Adolphi NL, Dvorscak L, Pierce MC. Femur morphology in healthy infants and young children. Clin Anat 2021; 35:305-315. [PMID: 34881441 DOI: 10.1002/ca.23825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Revised: 12/06/2021] [Accepted: 12/06/2021] [Indexed: 11/11/2022]
Abstract
The objective of this study was to characterize femur morphology in healthy infants and young children. Anterior-posterior (AP) radiographs of the femur from children age 0-3 years with no history of bone disease were obtained from two children's hospitals and one medical examiner's office. Femur morphological measures (bone length, minimum diaphysis diameter, growth plate width, and femur radius of curvature) and sectional structural measures were determined. Measures were described and compared based on subject age and mass. Relationships between measures and age and mass were evaluated. The 169 AP femur radiographs were obtained from 99 children (59.6% males, median age = 12.0 months, IQR = 0-27.5 months, median body weight = 10.0 kg, IQR = 4.4-15.6 kg). Femur length (rs = 0.97, p < 0.001; rs = 0.89, p < 0.001), trochanter width (rs = 0.86, p < 0.001; rs = 0.85, p < 0.001), minimum diaphysis diameter (rs = 0.91, p < 0.001; rs = 0.87, p < 0.001), and growth plate width (rs = 0.91, p < 0.001; rs = 0.84, p < 0.001) increased with age and weight, respectively. Cross-sectional area (rs = 0.87; rs = 0.86; p < 0.01), polar moment of inertia (rs = 0.91; rs = 0.87; p < 0.001), moment of inertia (rs = 0.91; rs = 0.87; p < 0.001), polar modulus (rs = 0.91; rs = 0.87; p < 0.001) and medullary canal diameter (rs = 0.83, p < 0.001; rs = 0.73, p < 0.001) at the minimum diaphysis also increased with age and weight, respectively. Changes during rapid bone growth are important to understanding fracture risk in infants and young children as they transition to independent walking. Femur length, trochanter width, minimum diaphysis diameter and growth plate width increased with age and weight. Structural properties associated with fracture resistance also increased with age and weight.
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Affiliation(s)
- Gina Bertocci
- Department of Bioengineering, J.B. Speed School of Engineering, University of Louisville, Louisville, Kentucky, USA
| | - Nathan P Brown
- Department of Bioengineering, J.B. Speed School of Engineering, University of Louisville, Louisville, Kentucky, USA
| | - Angela Thompson
- Department of Engineering Fundamentals, J.B. Speed School of Engineering, University of Louisville, Louisville, Kentucky, USA
| | - Karen Bertocci
- Department of Bioengineering, J.B. Speed School of Engineering, University of Louisville, Louisville, Kentucky, USA
| | - Natalie L Adolphi
- Department of Biochemistry and Molecular Biology, University of New Mexico, Albuquerque, New Mexico, USA
| | - Lauren Dvorscak
- Department of Pathology, University of New Mexico, Albuquerque, New Mexico, USA
| | - Mary Clyde Pierce
- Division of Emergency Medicine, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago IL and Department of Pediatrics, Northwestern University Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
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16
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Biomechanical Evaluation on the Bilateral Asymmetry of Complete Humeral Diaphysis in Chinese Archaeological Populations. Symmetry (Basel) 2021. [DOI: 10.3390/sym13101843] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Diaphyseal cross-sectional geometry (CSG) is an effective indicator of humeral bilateral asymmetry. However, previous studies primarily focused on CSG properties from limited locations to represent the overall bilateral biomechanical performance of humeral diaphysis. In this study, the complete humeral diaphyses of 40 pairs of humeri from three Chinese archaeological populations were scanned using high-resolution micro-CT, and their biomechanical asymmetries were quantified by morphometric mapping. Patterns of humeral asymmetry were compared between sub-groups defined by sex and population, and the representativeness of torsional rigidity asymmetry at the 35% and 50% cross-sections (J35 and J50 asymmetry) was testified. Inter-group differences were observed on the mean morphometric maps, but were not statistically significant. Analogous distribution patterns of highly asymmetrical regions, which correspond to major muscle attachments, were observed across nearly all the sexes and populations. The diaphyseal regions with high variability of bilateral asymmetry tended to present a low asymmetrical level. The J35 and J50 asymmetry were related to the overall humeral asymmetry, but the correlation was moderate and they could not reflect localized asymmetrical features across the diaphysis. This study suggests that the overall asymmetry pattern of humeral diaphysis is more complicated than previously revealed by individual sections.
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17
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Cox SL. A geometric morphometric assessment of shape variation in adult pelvic morphology. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2021; 176:652-671. [PMID: 34528241 DOI: 10.1002/ajpa.24399] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 06/13/2021] [Accepted: 07/29/2021] [Indexed: 12/16/2022]
Abstract
OBJECTIVES In humans, the pelvis is the most sexually dimorphic skeletal element and is often utilized in aging and sexing remains. The pelvis has become greatly relied upon in anthropological research (e.g., forensics, demographics, obstetrics, evolutionary history); however, pelvis morphology is highly variable, and very little is known about the nature, sources, patterning, and interpretation of this variation. This study aims to quantify pelvis shape variation, document sexual shape variation, and estimate the plasticity of morphology. This will ultimately give greater ability to interpret modern, archaeological, and evolutionary patterns to gain deeper insight into processes which shape human anatomy. MATERIALS AND METHODS Using a sample of 129 Medieval Danish skeletons, shape variation is documented in the greater sciatic notch (GSN), iliac crest (IC), arcuate line (AL), and sub-pubic angle (SPA) using 3D geometric morphometrics. The landmarking method applied here has the advantage of being applicable to fragmentary remains, rather than requiring whole bones. This allows it to be easily applied to archaeological samples and for the interpretation of separate bone features. Differences in shape were statistically analyzed by principle component analysis, linear discriminate analysis, and morphological disparity. Relationships between maximum femur length, body mass, and shape centroid size were also test by allometric regression. RESULTS Results quantify the sexual dimorphism and shape variation present in these features. The GSN shape is the most variable, while the AL is the least. Similarly, the IC is the only feature which shows almost no dimorphism in shape, and instead best reflects lifestyle/activity patterns. Evidence of dimorphism in the IC is likely a result of cultural labor patterns rather than genetic and hormonal influence. Finally, the shapes of the GSN, AL, and SPA are more related to body mass than to femur length, such that individuals with increased mass exhibit more classically "male" shapes and those with less mass have more "female" shapes. DISCUSSION The results have important implications for the evolution of pelvic anatomy, and sexual dimorphism, but also highlight the plasticity inherent in pelvic morphology. Analyzing pelvis features separately in a clearly defined, relatively genetically homogenous population gives insight into the determinants of bone morphology, which are not readily observable by other means. The relationship between body mass and shape suggests dimorphism in body size and composition may affect bone shape.
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Affiliation(s)
- Samantha L Cox
- Department of Genetics, University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Physical Anthropology, Penn Museum, University of Pennsylvania, Philadelphia, Pennsylvania, USA.,University of Cambridge, Department of Archaeology, Cambridge, UK
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18
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Tommy KA, Zipfel B, Kibii J, Carlson KJ. Trabecular bone properties in the ilium of the Middle Paleolithic/Middle Stone Age Border Cave 3 Homo sapiens infant and the onset of independent gait. J Hum Evol 2021; 155:102984. [PMID: 33945891 DOI: 10.1016/j.jhevol.2021.102984] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 03/03/2021] [Accepted: 03/03/2021] [Indexed: 10/21/2022]
Abstract
The Border Cave 3 (BC3) infant skeleton has been understudied, despite its importance as an example of a well-preserved and fairly complete immature skeleton of early Homo sapiens which potentially provides a rare window into various aspects of ontogenetic development, including locomotor activity (e.g., timing of gait events). Trabecular structure in the BC3 ilium was evaluated to investigate whether it matches that of an equivalently aged infant from a postindustrialized society. Microcomputed tomography (μCT) scans were acquired from the BC3 infant and from an ontogenetic series of 25 postindustrial infants that were divided into three age classes (ACs) ranging from neonates to toddlers (<36 months). All ilia were qualitatively compared and then digitally subdivided into 10 volumes of interest (VOIs) based on anatomical reference points. The VOIs were quantified and ontogenetic differences in trabecular structure were statistically evaluated. Across the comparative ontogenetic series, trabecular architectural properties overlapped in all regions. However, trabecular thickness increased significantly after the first year of life. The BC3 infant demonstrated generally similar trabecular structure to that observed in the age-equivalent postindustrial infants (AC2), including relatively strong development of the trabecular chiasma qualitatively. However, some interesting distinctions were observed in BC3, such as low strut thickness compared with infants from the postindustrial sample, that bear further exploration in future studies. Evaluation of only one individual from the Middle Stone Age (MSA), coupled with the relatively small comparative sample, limit our ability to distinguish more meaningful biological differences in trabecular structure throughout ontogeny from idiosyncratic characteristics. Nonetheless, results of this study extend ongoing research on infant locomotor and morphological development to archeological populations in the Middle Stone Age. Further cross-cultural studies consisting of larger comparative postindustrial samples may provide additional information on trabecular structure in the infant ilium during this important developmental timeframe.
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Affiliation(s)
- Kimberleigh A Tommy
- Human Variation and Identification Research Unit, School of Anatomical Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, Gauteng, South Africa.
| | - Bernhard Zipfel
- Evolutionary Studies Institute, School of Geosciences, University of the Witwatersrand, Johannesburg, Gauteng, South Africa
| | - Job Kibii
- Earth Sciences Department, Palaeontology Section, National Museums of Kenya, Nairobi, Kenya
| | - Kristian J Carlson
- Evolutionary Studies Institute, School of Geosciences, University of the Witwatersrand, Johannesburg, Gauteng, South Africa; Department of Integrative Anatomical Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
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19
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Zelazny KG, Sylvester AD, Ruff CB. Bilateral asymmetry and developmental plasticity of the humerus in modern humans. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2021; 174:418-433. [PMID: 33460465 DOI: 10.1002/ajpa.24213] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 11/08/2020] [Accepted: 12/08/2020] [Indexed: 11/12/2022]
Abstract
OBJECTIVE This study investigates bilateral asymmetry in the humerus of modern human populations with differing activity patterns to assess the relative plasticity of different bone regions in response to environmental influences, particularly the biomechanical demands of handedness. METHODS External breadths, cross-sectional properties, and centroid sizes were used to quantify directional and absolute asymmetry of humeral diaphyseal, distal periarticular, and articular regions in six populations with differing subsistence strategies (total n = 244). Geometric section properties were measured using computed tomography at six locations along the distal humerus, while centroid sizes of the distal articular and periarticular regions, as well as eight segments of the diaphysis, were extracted from external landmark data. Bilateral asymmetries were compared between populations and sexes. Each property was also tested for correlation with bilateral asymmetry at 40% of bone length, which has been shown to correlate with handedness. RESULTS Asymmetry is highest in the diaphysis, but significant through all distal bone regions. Asymmetry increases in the region of the deltoid tuberosity, and progressively declines distally through the shaft and distal periarticular region. Articular asymmetry is higher than periarticular asymmetry, approaching levels seen just proximal to the olecranon fossa, and is weakly but significantly correlated with diaphyseal asymmetry. Hunter-gatherers from Indian Knoll have significantly higher levels of asymmetry than other groups and are more sexually dimorphic, particularly in cross-sectional properties of the diaphysis. CONCLUSIONS Humeral dimensions throughout the diaphysis, including regions currently used in taxonomic assignments of fossil hominins, likely respond to in vivo use, including population and sex-specific behaviors.
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Affiliation(s)
- Kaya G Zelazny
- Center for Functional Anatomy and Evolution, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Adam D Sylvester
- Center for Functional Anatomy and Evolution, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Christopher B Ruff
- Center for Functional Anatomy and Evolution, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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20
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Vargas DM, Kleis SK, Lehmkuhl NRDS, Sousa CAD, Azevedo LCD. PREDICTORS OF BONE MINERAL DENSITY IN ADOLESCENTS WITH EXCESS WEIGHT. REV BRAS MED ESPORTE 2020. [DOI: 10.1590/1517-869220202606160524] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
ABSTRACT Introduction: Adolescence is characterized as a phase of intense development of the skeletal system. Maximizing bone mass acquisition during adolescence may reduce the risk of bone fractures later in life. Objectives: To analyze bone mineral density (BMD) and its relation to nutritional status and serum vitamin D in adolescents with excess weight. Methods: This is a cross-sectional, exploratory study. Data from 102 adolescents with excess weight, of both sexes, were analyzed. The following indices were evaluated: body mass index (BMI), abdominal circumference (AC), intake of micronutrients (vitamin D, calcium, magnesium and phosphorus), serum 25-hydroxycholecalciferol (25(OH)D concentration, BMD of the proximal femur, lumbar spine (L1-L4) and total body, % body fat mass (% BFM), total BFM, total body lean mass (BLM), body fat mass (BFMI) and lean mass (BLMI). Results: The male adolescents (n=53) had higher values for weight, height, AC, BLM and BLMI, while the females (n=49) had higher % BFM. The majority were obese (53.9%) and had a BMD within the normal range for all evaluation sites. Of the 84 adolescents (n=84) with laboratory examination of 25OHD, 33.3% presented values considered insufficient or deficient. Multivariate linear regression analysis showed that the most important independent predictor of BMD for the girls was BLMI, regardless the evaluation site. For boys, in addition to BLMI, BMI-Z of the proximal femur (neck of the femur and total) was also was a determinant variable for BMD. Conclusion: In this sample of adolescents, BLMI was a positive predictor of BMD in both sexes; and BMI-Z was a positive predictor only in proximal femur in the boys. Level of evidence II; Prognostic studies.
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21
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Wong AK, Pokhoy A, Chandrakumar A, Cvejkus RK, Zmuda JM. Short- and Long-Term Reciprocal Bone-Muscle Relationships in the Upper and Lower Extremity of Afro-Caribbean Men by DXA: A Longitudinal Analysis of the Tobago Bone Health Study. JBMR Plus 2020; 4:e10406. [PMID: 33103031 PMCID: PMC7574705 DOI: 10.1002/jbm4.10406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 07/30/2020] [Accepted: 08/17/2020] [Indexed: 11/26/2022] Open
Abstract
Little is known about the time course of muscle–bone effects and whether a reciprocal clinical effect of bone on muscle is present. We hypothesized that lean mass (LM) measures at the arms and legs have a stronger relationship with BMD measured within the same region than the reciprocal effect. The Tobago Bone Health Study was used to address this hypothesis, examining body composition data from total body DXA scans obtained at 0, 48‐, and 120‐month visits. A longitudinal analysis of LM, LM/height2 (LMI), and LM/BMI was conducted at the upper and lower extremities separately, in relation to BMD within the corresponding region. A cross‐lagged panel model was used to study pathways from 0 to 120 months for muscle–bone and bone–muscle effects within the same visit, and across each lagged period. Models accounted for age, height, weight, race, arthritis, prior nontraumatic fracture after age 40, number of units of alcohol consumed per week, current smoking, diagnosis of diabetes mellitus, amount of walking in the last week, grip strength, and hospitalizations. Significant models demonstrating parsimony, and meeting absolute and relative fit criteria were retained. Among 1286 Afro‐Caribbean men (mean age: 53 ± 9 years, BMI: 27.43 ± 4.23 kg/m2) with data available for all visits, LM, LMI, and LM/BMI had modest contemporaneous relationships with BMD, which dissipated with lagged time. The size of these effects was stronger at the legs than at the arms. These lagged effects were primarily mediated through indirect same time‐point muscle–bone relations rather than a true directly lagged effect. Bone density showed only a small effect on LM arm measures across lagged time, but this was impossible to tease‐out from same time‐point relations. These results suggest muscle–bone relationships are not long‐lasting at least beyond 48 months. Efforts to maintain muscle and bone strength should focus on shorter‐term interventions. More studies are needed with serial bone–muscle imaging over shorter periods. © 2020 The Authors. JBMR Plus published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research.
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Affiliation(s)
- Andy Ko Wong
- Centre of Excellence in Skeletal Health Assessment, Joint Department of Medical Imaging University Health Network Toronto Ontario Canada.,Toronto General Hospital Research Institute, University Health Network Toronto Ontario Canada.,Division of Epidemiology, Dalla Lana School of Public Health University of Toronto Toronto Ontario Canada
| | - Anthony Pokhoy
- Centre of Excellence in Skeletal Health Assessment, Joint Department of Medical Imaging University Health Network Toronto Ontario Canada.,Toronto General Hospital Research Institute, University Health Network Toronto Ontario Canada
| | - Abinaa Chandrakumar
- Centre of Excellence in Skeletal Health Assessment, Joint Department of Medical Imaging University Health Network Toronto Ontario Canada.,Toronto General Hospital Research Institute, University Health Network Toronto Ontario Canada
| | - Ryan K Cvejkus
- Department of Epidemiology Graduate School of Public Health, University of Pittsburgh Pittsburgh PA USA
| | - Joseph M Zmuda
- Department of Epidemiology Graduate School of Public Health, University of Pittsburgh Pittsburgh PA USA
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22
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Wang C, Wang S, Liu S, Cheng Y, Geng H, Yang R, Feng T, Lu G, Sun X, Song J, Hao L. Synonymous Mutations of Porcine Igf1r Extracellular Domain Affect Differentiation and Mineralization in MC3T3-E1 Cells. Front Cell Dev Biol 2020; 8:623. [PMID: 32754602 PMCID: PMC7381325 DOI: 10.3389/fcell.2020.00623] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 06/22/2020] [Indexed: 12/27/2022] Open
Abstract
Owing to the wide application of miniature pigs in biomedicine, the formation mechanism of its short stature must be elucidated. The insulin-like growth factor 1 receptor (IGF-1R), which receives signals through the extracellular domain (ECD) binding with ligands, is crucial in regulating cell growth and bone matrix mineralization. In this study, two haplotypes of Igf1r with four synonymous mutations in the coding sequences of IGF-1R ECD between large pigs (LP) and Bama pigs (BM) were stably expressed in the Igf1r-knockout MC3T3-E1 cells and named as MC3T3-LP cells (LP group) and MC3T3-BM cells (BM group), respectively. IGF-1R expression was lower in the BM group than in the LP group both in terms of transcription and translation levels, and IGF-1R expression inhibited cell proliferation. In addition, IGF-1R expression in the BM group promoted early-stage differentiation but delayed late-stage differentiation, which not only suppressed the expression of bone-related factors but also reduced alkaline phosphatase activity and calcium deposition. Moreover, different haplotypes of Igf1r changed the stability and conformation of the protein, further affecting the binding with IGF-1. Our data indicated that the four synonymous mutations of IGF1R ECD encoded by affect gene transcription and translation, thereby further leading to differences in the downstream pathways and functional changes of osteoblasts.
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Affiliation(s)
- Chunli Wang
- College of Animal Sciences, Jilin University, Changchun, China
| | - Siyao Wang
- College of Animal Sciences, Jilin University, Changchun, China
| | - Songcai Liu
- College of Animal Sciences, Jilin University, Changchun, China
| | - Yunyun Cheng
- College of Animal Sciences, Jilin University, Changchun, China
| | - Hongwei Geng
- College of Animal Sciences, Jilin University, Changchun, China
| | - Rui Yang
- College of Animal Sciences, Jilin University, Changchun, China
| | - Tianqi Feng
- College of Animal Sciences, Jilin University, Changchun, China
| | - Guanhong Lu
- College of Animal Sciences, Jilin University, Changchun, China
| | - Xiaotong Sun
- College of Animal Sciences, Jilin University, Changchun, China
| | - Jie Song
- College of Animal Sciences, Jilin University, Changchun, China
| | - Linlin Hao
- College of Animal Sciences, Jilin University, Changchun, China
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23
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Swan KR, Ives R, Wilson LAB, Humphrey LT. Ontogenetic changes in femoral cross-sectional geometry during childhood locomotor development. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2020; 173:80-95. [PMID: 32656773 DOI: 10.1002/ajpa.24080] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 02/10/2020] [Accepted: 05/06/2020] [Indexed: 01/24/2023]
Abstract
OBJECTIVES The femur is a major weight-bearing bone that is variably loaded throughout growth as children transition through locomotory states prior to the attainment of a mature bipedal gait. Here, we document ontogenetic trends in femoral cross-sectional geometry (CSG) and explore how changes in loading regime may impact the structural arrangement of cortical bone along the length of the developing diaphysis. MATERIALS AND METHODS Micro-CT scans of 110 immature femora were generated from a documented archaeological sample ranging in age from birth to 8.5 years old. CSG properties indicative of relative bone strength and bending rigidity were analyzed from cross-sections extracted at 35%, 50% and 65% of total intermetaphyseal length. RESULTS Infants experience a marked redistribution of cortical bone between birth and 7 months facilitating a more advantageous mechanical structure for early load bearing behaviors as bone is displaced further from the section centroid. Early walkers are characterized by a mediolaterally reinforced cross-section that becomes more circular as gait continues to develop. DISCUSSION During ontogeny the femur undergoes distinct morphological phases, which correspond with changes in loading regime. This study illustrates the importance of loading conditions in shaping immature bone morphology. Nonmechanical factors such as changes in hormonal environmental can also impact on this dynamic.
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Affiliation(s)
- Karen R Swan
- Department of Earth Sciences, Natural History Museum, London, UK
| | - Rachel Ives
- Department of Earth Sciences, Natural History Museum, London, UK
| | - Laura A B Wilson
- School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, New South Wales, Australia
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Ruff CB, Squyres N, Junno J. Body mass estimation in hominins from humeral articular dimensions. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2020; 173:480-499. [DOI: 10.1002/ajpa.24090] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 04/02/2020] [Accepted: 05/17/2020] [Indexed: 12/31/2022]
Affiliation(s)
- Christopher B. Ruff
- Center for Functional Anatomy and Evolution Johns Hopkins University School of Medicine Baltimore Maryland USA
| | - Nicole Squyres
- Center for Functional Anatomy and Evolution Johns Hopkins University School of Medicine Baltimore Maryland USA
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Picasso MBJ, Monti A, Mosto MC, Morgan CC. Ontogenetic shape changes in the pelvis of the Greater Rhea (Aves, Palaeognathae) and their relationships with cursorial locomotion: a geometric morphometric approach. J Anat 2020; 236:1137-1145. [PMID: 31972872 DOI: 10.1111/joa.13158] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 11/25/2019] [Accepted: 01/07/2020] [Indexed: 12/14/2022] Open
Abstract
Knowledge of the ontogenetic pattern of morphological features is essential to improve biological interpretations. The study of morphological features of the pelvic girdle and hind limb apparatus throughout growth is an excellent approach to understand how the skeletal morphology and muscles are interrelated during growth in a bird with a specialized mode of locomotion. The Greater Rhea (Rhea americana) is a large cursorial palaeognathous bird with long legs and powerful musculature. The postnatal shape changes of the pelvis of this bird were studied with geometric morphometric techniques, using landmarks and semilandmarks. In addition, regression analyses were used to explore the association between pelvic shape changes with muscle and body mass. The pelvises of 16 specimens of Rhea americana from 1 month old to adulthood were studied in dorsal and lateral views. Noticeable differences in pelvic shape were noted between ages, particularly in lateral view. In young birds, the pre- and post-acetabular ilium was subequal in length, whereas in adults the pre-acetabular ilium became shorter. In dorsal view, the main shape changes observed were the progressive thinning of both ilium portions and the elongation of the vertex craniolateralis ilii from chicks to adulthood. In this view, the only clear differentiation was between young and adult birds. Shape differences were influenced by body mass and pelvic muscles; the post-acetabular muscle mass explained the highest percentage of the variation. The specialized locomotion of Greater Rhea is reflected in their pelvic musculoskeletal system, in which the change to a longer post-acetabular ilium correlates with the growth of the powerful post-acetabular muscles. The actions of these muscles provide the necessary strength to support the body mass, minimize the body swinging movements and propel the body forward during locomotion. Bone morphology is affected by the forces produced by body mass and the muscle activity, demonstrating the presence of common growth mechanisms, which are primordial and gave rise to a functional and properly proportioned adult.
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Affiliation(s)
- Mariana B J Picasso
- División Paleontología Vertebrados, Museo de La Plata-Facultad de Ciencias Naturales y Museo, UNLP, Buenos Aires, Argentina.,CONICET, Buenos Aires, Argentina
| | - Ailin Monti
- División Paleontología Vertebrados, Museo de La Plata-Facultad de Ciencias Naturales y Museo, UNLP, Buenos Aires, Argentina
| | - Maria C Mosto
- División Paleontología Vertebrados, Museo de La Plata-Facultad de Ciencias Naturales y Museo, UNLP, Buenos Aires, Argentina.,CONICET, Buenos Aires, Argentina
| | - Cecilia C Morgan
- CONICET, Buenos Aires, Argentina.,Sección Mastozoología, División Zoología Vertebrados, Museo de La Plata-Facultad de Ciencias Naturales y Museo, UNLP, Buenos Aires, Argentina
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Runestad Connour J, Glander KE. Sexual dimorphism and growth in Alouatta palliata based on 20+ years of field data. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2020; 172:545-566. [PMID: 32474912 DOI: 10.1002/ajpa.24055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 01/17/2020] [Accepted: 03/10/2020] [Indexed: 01/24/2023]
Abstract
OBJECTIVES Alouatta palliata patterns of growth and sexual dimorphism are evaluated using 20 plus years of field data. Comparisons are made to other species of Alouatta and other New World primates. MATERIALS AND METHODS Records of 92 A. palliata from Guanacaste Province, Costa Rica, were used to generate growth curves for body mass and linear measurements. Timing of growth for the properties was compared, and males and females were contrasted. Slopes and elevations for periods of rapid growth were evaluated. Growth allometry and proportion ratios were also explored. RESULTS Body mass growth is rapid during the first 2 years. Males and females begin to diverge around a year of age as male growth increases and female growth slows. Adult mass for both is reached about 4 years of age. Linear measurements show rapid growth the first 18 months for both sexes. Differences develop as males continue the same rate of linear growth while female growth slows. Adult size is reached for head and body length around 3 years, and for hind-foot and tail lengths around 2 years. DISCUSSION A. palliata males grow in mass more rapidly than females, while both grow similarly in linear dimensions, so that dimorphism is more pronounced in mass. This pattern is seen in other dimorphic New World primates. Male A. palliata may grow more rapidly than A. seniculus, reflecting earlier emigration for A. palliata males. Linear dimensions reach adult proportions earlier than body mass. For hind-foot and tail, this is probably an adaptation for gripping.
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Affiliation(s)
| | - Kenneth E Glander
- Evolutionary Anthropology Department, Duke University, Durham, North Carolina, USA
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Raguin E, Drapeau MSM. Relation between cross-sectional bone geometry and double zonal osteon frequency and morphology. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2019; 171:598-612. [PMID: 31675105 DOI: 10.1002/ajpa.23954] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 08/08/2019] [Accepted: 10/15/2019] [Indexed: 12/29/2022]
Abstract
OBJECTIVES While double-zonal osteons (DZ) are characterized by a hyper-mineralized ring inside their lamellae, recent findings suggest that this ring is also defined by a change in the collagen fibers' orientation. Collagen and minerals are essential components to the maintenance of adequate bone strength and their alteration can modify the mechanical properties of the bone tissue. Consequently, the aim of this study is to explore the effect of past loads, as estimated from cross-sectional geometric properties, on the formation of DZ osteons compared to type I (common) osteons. MATERIALS AND METHODS The sample consists of paired humerus and femur midshaft sections (n = 23) of Eurocanadian settlers from the historical St. Matthew cemetery, Quebec City (1771-1860). Histomorphometric variables included in this study are osteon density for DZ and type I osteons (DZD; OPD), osteon area (DZOn.Ar; On. Ar), Haversian canal area (DZH.Ar; H.Ar), and the area within the hypermineralized ring (HR. Ar). Loading history is estimated from cross-sectional properties including the following variable: cortical and total area (CA, TA), maximum and minimum second moment of area (Imax , Imin ) and polar moment of area (J). RESULTS When the humerus and femur of the same individuals are compared, the femur has a higher OPD, DZD, and relative DZD (DZD/OPD). DZ osteons have a smaller area and Haversian canal area compared to type I osteons. The area within the hypermineralized ring in DZ is higher than the Haversian canal area of the type I osteons. Correlations between the residual scores of the regression of histomorphometric variables and cross-sectional properties of the humerus on the femur were not significant. DISCUSSION Based on the analysis of the entire cross-section, the lack of correlation between variations in cross-sectional properties and remodeling combined with the significant differences between humeri and femura suggests that the creation of DZ or type I osteons in the bone tissue might be due to a bone specific response, possibly related to differences in bone tissue age that needs to be further investigated. Definitive conclusion regarding biomechanical loads still seem to be premature as regional variations associated with mechanical properties remain to be explored.
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Affiliation(s)
- Emeline Raguin
- Département d'anthropologie, Université de Montréal, Montréal, Québec, Canada
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Monjardino T, Amaro J, Fonseca MJ, Rodrigues T, Santos AC, Lucas R. Early childhood as a sensitive period for the effect of growth on childhood bone mass: Evidence from Generation XXI birth cohort. Bone 2019; 127:287-295. [PMID: 31279094 DOI: 10.1016/j.bone.2019.07.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2019] [Revised: 06/25/2019] [Accepted: 07/03/2019] [Indexed: 10/26/2022]
Abstract
BACKGROUND To identify sensitive periods for the effect of early life growth on childhood bone mass we compared the associations between weight and length/height velocities from birth to age six and bone mineral content (BMC) and areal density (aBMD) at 7 years of age. METHODS We analyzed data from 1853 participants from the Generation XXI birth cohort scanned with a whole body dual-energy X-ray absorptiometry system. Velocities of growth in weight and length/height were obtained through linear spline multilevel models on the basis of data collected during routine health examinations. Using linear regression we computed associations of birth weight, birth length, five weight velocities ("early neonatal": 0-10 days, "early infancy": 10 days-3 months, "late infancy": 3-12 months, "early childhood": 1-3 years, and "later childhood": 3-6 years) and four length/height velocities ("early infancy": 0-3 months, "late infancy": 3-12 months, "early childhood": 1-3 years, and "later childhood": 3-6 years) with outcomes BMC, aBMD, height and height-adjusted BMC at age seven. Confounding by maternal and child characteristics was addressed and effects of growth velocities were adjusted to preceding growth. RESULTS Weight and length/height velocities up to the age of six were associated with increased bone mass, areal density and height at 7 years with the strongest associations observed for growth in early childhood. In this age period, after concurrent height and confounder adjustment, one standard deviation (SD) increase in weight velocity was associated with higher BMC z-scores: 0.27 (95%CI: 0.22, 0.32) in girls and 0.24 (95%CI: 0.19, 0.29) in boys. Height velocity was also associated with greater height-adjusted BMC z-score: 0.12 (95%CI: 0.07, 0.17) per SD in girls and 0.11 (95%CI: 0.06, 0.16) in boys. The pattern of associations was similar, albeit attenuated, after adjusting for preceding growth. CONCLUSION Growth in second and third years of life may represent a sensitive period for the effect of growth on childhood bone mass, partly through their effect on concurrent body size.
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Affiliation(s)
- Teresa Monjardino
- EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal.
| | - Joana Amaro
- EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal
| | - Maria João Fonseca
- EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal
| | - Teresa Rodrigues
- EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal; Departamento de Ciências da Saúde Pública e Forenses e Educação Médica, Faculdade de Medicina, Universidade do Porto, Porto, Portugal; Serviço de Ginecologia e Obstetrícia, Centro Hospitalar Universitário de São João, Porto, Portugal
| | - Ana Cristina Santos
- EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal; Departamento de Ciências da Saúde Pública e Forenses e Educação Médica, Faculdade de Medicina, Universidade do Porto, Porto, Portugal
| | - Raquel Lucas
- EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal; Departamento de Ciências da Saúde Pública e Forenses e Educação Médica, Faculdade de Medicina, Universidade do Porto, Porto, Portugal
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Schlecht SH, Martin CT, Ochocki DN, Nolan BT, Wojtys EM, Ashton-Miller JA. Morphology of Mouse Anterior Cruciate Ligament-Complex Changes Following Exercise During Pubertal Growth. J Orthop Res 2019; 37:1910-1919. [PMID: 31042312 PMCID: PMC6700741 DOI: 10.1002/jor.24328] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 04/08/2019] [Indexed: 02/04/2023]
Abstract
Postnatal development and the physiological loading response of the anterior cruciate ligament (ACL) complex (ACL proper, entheses, and bony morphology) is not well understood. We tested whether the ACL-complex of two inbred mouse strains that collectively encompass the musculoskeletal variation observed in humans would demonstrate significant morphological differences following voluntary cage-wheel running during puberty compared with normal cage activity controls. Female A/J and C57BL/6J (B6) 6-week-old mice were provided unrestricted access to a standard cage-wheel for 4 weeks. A/J-exercise mice showed a 6.3% narrower ACL (p = 0.64), and a 20.1% more stenotic femoral notch (p < 0.01) while B6-exercise mice showed a 12.3% wider ACL (p = 0.10), compared with their respective controls. Additionally, A/J-exercise mice showed a 5.3% less steep posterior medial tibial slope (p = 0.07) and an 8.8% less steep posterior lateral tibial slope (p = 0.07), while B6-exercise mice showed a 9.8% more steep posterior medial tibial slope (p < 0.01) than their respective controls. A/J-exercise mice also showed more reinforcement of the ACL tibial enthesis with a 20.4% larger area (p < 0.01) of calcified fibrocartilage distributed at a 29.2% greater depth (p = 0.02) within the tibial enthesis, compared with their controls. These outcomes suggest exercise during puberty significantly influences ACL-complex morphology and that inherent morphological differences between these mice, as observed in their less active genetically similar control groups, resulted in a divergent phenotypic outcome between mouse strains. © 2019 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 37:1910-1919, 2019.
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Affiliation(s)
- Stephen H. Schlecht
- Department of Orthopaedic Surgery, University of Michigan, Ann Arbor, Michigan
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan
| | - Colin T. Martin
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan
| | | | - Bonnie T. Nolan
- Department of Orthopaedic Surgery, University of Michigan, Ann Arbor, Michigan
| | - Edward M. Wojtys
- Department of Orthopaedic Surgery, University of Michigan, Ann Arbor, Michigan
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Nalley TK, Scott JE, Ward CV, Alemseged Z. Comparative morphology and ontogeny of the thoracolumbar transition in great apes, humans, and fossil hominins. J Hum Evol 2019; 134:102632. [DOI: 10.1016/j.jhevol.2019.06.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 06/19/2019] [Accepted: 06/19/2019] [Indexed: 01/01/2023]
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Wei X, Zhang Z. Ontogenetic changes of geometrical and mechanical characteristics of the avian femur: a comparison between precocial and altricial birds. J Anat 2019; 235:903-911. [PMID: 31355453 DOI: 10.1111/joa.13062] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/21/2019] [Indexed: 11/30/2022] Open
Abstract
The mechanical performance of limb bones is closely associated with an animal's locomotor capability and is thus important to our understanding of animal behaviour. This study combined a geometrical analysis and three-point bending tests to address the question of how the mechanical performance of the femurs of Japanese quail (Coturnix coturnix japonica) and pigeon (Columba livia domestica) respond to changing functional demands during ontogeny. Results showed that hatchling quails had stiff bone tissues, and the femoral ultimate loads scaled negatively with body mass, corresponding to high functional demands during early growth. The hatchling pigeon femora had weak material properties but they showed a dramatic increase in Young's modulus during growth. Consequently, although femoral cross-sectional geometry showed negative allometry, the ultimate loads scaled positively with body mass. Older pigeons had more circular bone cross-sections than younger pigeons, probably due to load stimulation changes occurred shortly after the onset of locomotion. Negative allometry and isometry of the cross-sectional geometry of hind limb bones were observed in flying birds and ground-dwelling birds, respectively. The correspondence between geometrical change and locomotor pattern suggests that ontogenetic changes in cross-sectional geometry may be an effective indicator of avian locomotor behaviour.
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Affiliation(s)
- Xinsen Wei
- College of Life Sciences, Capital Normal University, Beijing, China
| | - Zihui Zhang
- College of Life Sciences, Capital Normal University, Beijing, China
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32
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Sládek V, Čerevková S, Zikmund T, Kaiser J. Error in the estimation of periosteal and endosteal contours from micro-CT scans for nonadult tibiae and humeri. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2019; 170:275-294. [PMID: 31322736 DOI: 10.1002/ajpa.23894] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 06/07/2019] [Accepted: 06/19/2019] [Indexed: 11/06/2022]
Abstract
OBJECTIVES This article summarized errors obtained by diverse techniques used for the derivation of cross-sectional contours in nonadult humeri and tibiae. MATERIALS AND METHODS We analyzed cross-sectional contours in a total sample of 62 humeral and 75 tibial diaphyses in the age between birth and 12 years divided into three age groups. Long bone 35% (humeri) and midshaft (tibiae) cross-sections were taken on micro-CT images and analyzed by EPJMacro in FIJI. Properties were extracted from contours derived by manual, automatic, spline, and ellipse techniques. Agreement between techniques was assessed using manually extracted properties such as the true value using percent prediction error (%PE), reduced major axis regression, and ±95% limits of agreement. RESULTS The lowest measurement errors were obtained for total areas, moderate errors for cortical areas and section moduli, and the highest errors for medullary areas for both bones. Derivation of humeral nonadult cross-sectional properties is less sensitive to the technique used for derivation of periosteal and endosteal contours, reaching mean %PEs below 5%. In contrast, tibial nonadult cross-sectional properties are more sensitive to the technique used and exceed 5% for some combinations. DISCUSSION Automatic techniques provide reasonably high agreement with manually extracted contours for nonadult humeri but low agreement for tibiae. Semiautomatic approaches-spline and ellipse techniques-may reduce the error for all studied properties in tibiae, especially when combined with manually traced periosteal contours. The positive effect of the semiautomatic technique on measurement error is low for humeri.
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Affiliation(s)
- Vladimír Sládek
- Faculty of Science, Charles University in Prague, Prague 2, Czech Republic
| | - Simona Čerevková
- Faculty of Science, Charles University in Prague, Prague 2, Czech Republic
| | - Tomáš Zikmund
- Central European Institute of Technology, Brno, Czech Republic
| | - Jozef Kaiser
- Central European Institute of Technology, Brno, Czech Republic
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Tobias JH, Sayers A, Deere KC, Heazell AEP, Lawlor DA, Ireland A. Breech presentation is associated with lower adolescent tibial bone strength. Osteoporos Int 2019; 30:1423-1432. [PMID: 31020365 DOI: 10.1007/s00198-019-04945-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 03/18/2019] [Indexed: 12/28/2022]
Abstract
We compared bone outcomes in adolescents with breech and cephalic presentation. Tibia bone mineral content, density, periosteal circumference, and cross-sectional moment of inertia were lower in breech presentation, and females with breech presentation had lower hip CSA. These findings suggest that prenatal loading may exert long-lasting influences on skeletal development. INTRODUCTION Breech position during pregnancy is associated with reduced range of fetal movement, and with lower limb joint stresses. Breech presentation at birth is associated with lower neonatal bone mineral content (BMC) and area, but it is unknown whether these associations persist into later life. METHODS We examined associations between presentation at onset of labor, and tibia and hip bone outcomes at age 17 years in 1971 participants (1062 females) from a UK prospective birth cohort that recruited > 15,000 pregnant women in 1991-1992. Cortical BMC, cross-sectional area (CSA) and bone mineral density (BMD), periosteal circumference, and cross-sectional moment of inertia (CSMI) were measured by peripheral quantitative computed tomography (pQCT) at 50% tibia length. Total hip BMC, bone area, BMD, and CSMI were measured by dual-energy X-ray absorptiometry (DXA). RESULTS In models adjusted for sex, age, maternal education, smoking, parity, and age, singleton/multiple births, breech presentation (n = 102) was associated with lower tibial cortical BMC (- 0.14SD, 95% CI - 0.29 to 0.00), CSA (- 0.12SD, - 0.26 to 0.02), BMD (- 0.16SD, - 0.31 to - 0.01), periosteal circumference (- 0.14SD, - 0.27 to - 0.01), and CSMI (- 0.11SD, - 0.24 to 0.01). In females only, breech presentation was associated with lower hip CSA (- 0.24SD, - 0.43 to 0.00) but not with other hip outcomes. Additional adjustment for potential mediators (delivery method, birthweight, gestational age, childhood motor competence and adolescent height and body composition) did not substantially affect associations with either tibia or hip outcomes. CONCLUSIONS These findings suggest that prenatal skeletal loading may exert long-lasting influences on skeletal size and strength but require replication.
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Affiliation(s)
- J H Tobias
- Musculoskeletal Research Unit, Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - A Sayers
- Musculoskeletal Research Unit, Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - K C Deere
- Musculoskeletal Research Unit, Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - A E P Heazell
- Division of Developmental Biology and Medicine, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - D A Lawlor
- MRC Integrative Epidemiology Unit, University of Bristol, Bristol, UK
- Population Health Science, Bristol Medical School, Bristol University, Bristol, UK
- Bristol NIHR Biomedical Research Centre, Bristol, UK
| | - A Ireland
- School of Healthcare Science, Manchester Metropolitan University, John Dalton Building, Chester Street, Manchester, M1 5GD, UK.
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Lee Y, Hong IK, Chun Y. Prediction of painful temporomandibular joint osteoarthritis in juvenile patients using bone scintigraphy. Clin Exp Dent Res 2019; 5:225-235. [PMID: 31249703 PMCID: PMC6585587 DOI: 10.1002/cre2.175] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2018] [Revised: 01/16/2019] [Accepted: 01/29/2019] [Indexed: 11/28/2022] Open
Abstract
The study aims to evaluate whether bone scintigraphy is effective in diagnosing temporomandibular joint (TMJ) osteoarthritis (OA) in juvenile patients. A retrospective study was conducted with 356 consecutive patients with TMJ-OA who were clinically assessed according to the Research Diagnostic Criteria for Temporomandibular Disorders. Patients were assigned to three groups based on their ages: Group 1: aged 12-16 years; Group 2: aged 17-19 years; and Group 3: aged 20 years. Additionally, we performed qualitative and quantitative analyses of bone scintigraphy images for the TMJ uptake ratio of the involved joint. The diagnostic rate of TMJ-OA (n = 356, 100%), and the overall presence of subjective pain (n = 282, 77.3%) was closest to the results of bone scintigraphy (n = 333, 91.2%). In addition, reported TMJ pain was significantly associated only with the results of bone scintigraphy and not with the results of panoramic radiography or cone beam computed tomography (CBCT) in all age groups. With CBCT as the reference standard, the optimal cutoff values of the uptake ratio for the diagnosis of TMJ-OA were 2.171 and 2.017 in Groups 1 and 2, respectively (P value < 0.05). Our results suggest that bone scintigraphy can be considered a useful modality for diagnosing TMJ-OA in juvenile patients.
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Affiliation(s)
- Yeon‐Hee Lee
- Department of Orofacial Pain and Oral MedicineKyung Hee University Dental HospitalSeoulSouth Korea
| | - Il Ki Hong
- Department of Nuclear MedicineKyung Hee University College of Medicine, Kyung Hee University HospitalSeoulSouth Korea
| | - Yang‐Hyun Chun
- Department of Orofacial Pain and Oral MedicineKyung Hee University Dental HospitalSeoulSouth Korea
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Bigelow EM, Patton DM, Ward FS, Ciarelli A, Casden M, Clark A, Goulet RW, Morris MD, Schlecht SH, Mandair GS, Bredbenner TL, Kohn DH, Jepsen KJ. External Bone Size Is a Key Determinant of Strength-Decline Trajectories of Aging Male Radii. J Bone Miner Res 2019; 34:825-837. [PMID: 30715752 PMCID: PMC6536328 DOI: 10.1002/jbmr.3661] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 12/06/2018] [Accepted: 12/19/2018] [Indexed: 12/13/2022]
Abstract
Given prior work showing associations between remodeling and external bone size, we tested the hypothesis that wide bones would show a greater negative correlation between whole-bone strength and age compared with narrow bones. Cadaveric male radii (n = 37 pairs, 18 to 89 years old) were evaluated biomechanically, and samples were sorted into narrow and wide subgroups using height-adjusted robustness (total area/bone length). Strength was 54% greater (p < 0.0001) in wide compared with narrow radii for young adults (<40 years old). However, the greater strength of young-adult wide radii was not observed for older wide radii, as the wide (R2 = 0.565, p = 0.001), but not narrow (R2 = 0.0004, p = 0.944) subgroup showed a significant negative correlation between strength and age. Significant positive correlations between age and robustness (R2 = 0.269, p = 0.048), cortical area (Ct.Ar; R2 = 0.356, p = 0.019), and the mineral/matrix ratio (MMR; R2 = 0.293, p = 0.037) were observed for narrow, but not wide radii (robustness: R2 = 0.015, p = 0.217; Ct.Ar: R2 = 0.095, p = 0.245; MMR: R2 = 0.086, p = 0.271). Porosity increased with age for the narrow (R2 = 0.556, p = 0.001) and wide (R2 = 0.321, p = 0.022) subgroups. The wide subgroup (p < 0.0001) showed a significantly greater elevation of a new measure called the Cortical Pore Score, which quantifies the cumulative effect of pore size and location, indicating that porosity had a more deleterious effect on strength for wide compared with narrow radii. Thus, the divergent strength-age regressions implied that narrow radii maintained a low strength with aging by increasing external size and mineral content to mechanically offset increases in porosity. In contrast, the significant negative strength-age correlation for wide radii implied that the deleterious effect of greater porosity further from the centroid was not offset by changes in outer bone size or mineral content. Thus, the low strength of elderly male radii arose through different biomechanical mechanisms. Consideration of different strength-age regressions (trajectories) may inform clinical decisions on how best to treat individuals to reduce fracture risk. © 2019 American Society for Bone and Mineral Research.
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Affiliation(s)
- Erin Mr Bigelow
- Department of Orthopaedic Surgery, University of Michigan, Ann Arbor, MI, USA
| | - Daniella M Patton
- Department of Orthopaedic Surgery, University of Michigan, Ann Arbor, MI, USA.,Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Ferrous S Ward
- Department of Orthopaedic Surgery, University of Michigan, Ann Arbor, MI, USA.,Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Antonio Ciarelli
- Department of Orthopaedic Surgery, University of Michigan, Ann Arbor, MI, USA.,Mechanical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Michael Casden
- School of Kinesiology, University of Michigan, Ann Arbor, MI, USA
| | - Andrea Clark
- Department of Orthopaedic Surgery, University of Michigan, Ann Arbor, MI, USA
| | - Robert W Goulet
- Department of Orthopaedic Surgery, University of Michigan, Ann Arbor, MI, USA
| | - Michael D Morris
- College of Literature, Science, and the Arts, University of Michigan, Ann Arbor, MI, USA
| | | | - Gurjit S Mandair
- Biological and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
| | - Todd L Bredbenner
- Department of Mechanical and Aerospace Engineering, University of Colorado-Colorado Springs, Colorado Springs, CO, USA
| | - David H Kohn
- Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA.,Biological and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
| | - Karl J Jepsen
- Department of Orthopaedic Surgery, University of Michigan, Ann Arbor, MI, USA.,Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
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Ireland A, Saunders FR, Muthuri SG, Pavlova AV, Hardy RJ, Martin KR, Barr RJ, Adams JE, Kuh D, Aspden RM, Gregory JS, Cooper R. Age at Onset of Walking in Infancy Is Associated With Hip Shape in Early Old Age. J Bone Miner Res 2019; 34:455-463. [PMID: 30496618 PMCID: PMC6446733 DOI: 10.1002/jbmr.3627] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2018] [Revised: 09/21/2018] [Accepted: 10/06/2018] [Indexed: 12/12/2022]
Abstract
Bones' shapes and structures adapt to the muscle and reaction forces they experience during everyday movements. Onset of independent walking, at approximately 12 months, represents the first postnatal exposure of the lower limbs to the large forces associated with bipedal movements; accordingly, earlier walking is associated with greater bone strength. However, associations between early life loading and joint shape have not been explored. We therefore examined associations between walking age and hip shape at age 60 to 64 years in 1423 individuals (740 women) from the MRC National Survey of Health and Development, a nationally representative British birth cohort. Walking age in months was obtained from maternal interview at age 2 years. Ten modes of variation in hip shape (HM1 to HM10), described by statistical shape models, were ascertained from DXA images. In sex-adjusted analyses, earlier walking age was associated with higher HM1 and HM7 scores; these associations were maintained after further adjustment for height, body composition, and socioeconomic position. Earlier walking was also associated with lower HM2 scores in women only, and lower HM4 scores in men only. Taken together, this suggests that earlier walkers have proportionately larger (HM4) and flatter (HM1, HM4) femoral heads, wider (HM1, HM4, HM7) and flatter (HM1, HM7) femoral necks, a smaller neck-shaft angle (HM1, HM4), anteversion (HM2, HM7), and early development of osteophytes (HM1). These results suggest that age at onset of walking in infancy is associated with variations in hip shape in older age. Early walkers have a larger femoral head and neck and smaller neck-shaft angle; these features are associated with reduced hip fracture risk, but also represent an osteoarthritic-like phenotype. Unlike results of previous studies of walking age and bone mass, associations in this study were not affected by adjustment for lean mass, suggesting that associations may relate directly to skeletal loading in early life when joint shape changes rapidly. © 2018 American Society for Bone and Mineral Research.
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Affiliation(s)
- Alex Ireland
- School of Healthcare Science, Manchester Metropolitan University, Manchester, UK
| | - Fiona R Saunders
- Aberdeen Centre for Arthritis and Musculoskeletal Health, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, UK
| | | | - Anastasia V Pavlova
- Aberdeen Centre for Arthritis and Musculoskeletal Health, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, UK
| | | | - Kathryn R Martin
- Aberdeen Centre for Arthritis and Musculoskeletal Health, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, UK
| | - Rebecca J Barr
- Aberdeen Centre for Arthritis and Musculoskeletal Health, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, UK.,Medicines Monitoring Unit (MEMO), Division of Molecular & Clinical Medicine, School of Medicine, University of Dundee, Ninewells Hospital & Medical School, Dundee, Scotland
| | - Judith E Adams
- Manchester Academic Health Science Centre and Radiology, Central Manchester University Hospitals NHS Foundation Trust and University of Manchester, Manchester Royal Infirmary, Manchester, UK
| | - Diana Kuh
- MRC Unit for Lifelong Health and Ageing at UCL, London, UK
| | - Richard M Aspden
- Aberdeen Centre for Arthritis and Musculoskeletal Health, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, UK
| | - Jennifer S Gregory
- Aberdeen Centre for Arthritis and Musculoskeletal Health, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, UK
| | - Rachel Cooper
- MRC Unit for Lifelong Health and Ageing at UCL, London, UK
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Magan A, Micklesfield LK, Nyati LH, Norris SA, Pettifor JM. A longitudinal comparison of appendicular bone growth and markers of strength through adolescence in a South African cohort using radiogrammetry and pQCT. Osteoporos Int 2019; 30:451-460. [PMID: 30426171 DOI: 10.1007/s00198-018-4761-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 11/02/2018] [Indexed: 11/29/2022]
Abstract
UNLABELLED To compare growth patterns and strength of weight- and non-weight-bearing bones longitudinally. Irrespective of sex and ethnicity, metacarpal growth was similar to that of the non-weight-bearing radius but differed from that of the weight-bearing tibia. Weight- and non-weight-bearing bones have different growth and strength patterns. INTRODUCTION Functional loading modulates bone size and strength. METHODS To compare growth patterns and strength of weight- and non-weight-bearing bones longitudinally, we performed manual radiogrammetry of the second metacarpal on hand-wrist radiographs and measured peripheral quantitative computed tomography images of the radius (65%) and tibia (38% and 65%), annually on 372 black and 152 white South African participants (ages 12-20 years). We aligned participants by age from peak metacarpal length velocity. We assessed bone width (BW, mm); cortical thickness (CT, mm); medullary width (MW, mm); stress-strain index (SSI, mm3); and muscle cross-sectional area (MCSA, mm2). RESULTS From 12 to 20 years, the associations between metacarpal measures (BW, CT and SSI) and MCSA at the radius (males R2 = 0.33-0.45; females R2 = 0.12-0.20) were stronger than the tibia (males R2 = 0.01-0.11; females R2 = 0.007-0.04). In all groups, radial BW, CT and MW accrual rates were similar to those of the metacarpal, except in white females who had lower radial CT (0.04 mm/year) and greater radial MW (0.06 mm/year) accrual. In all groups, except for CT in white males, tibial BW and CT accrual rates were greater than at the metacarpal. Tibial MW (0.29-0.35 mm/year) increased significantly relative to metacarpal MW (- 0.07 to 0.06 mm/year) in males only. In all groups, except white females, SSI increased in each bone. CONCLUSION Irrespective of sex and ethnicity, metacarpal growth was similar to that of the non-weight-bearing radius but differed from that of the weight-bearing tibia. The local and systemic factors influencing site-specific differences require further investigation. Graphical abstract.
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Affiliation(s)
- A Magan
- South African MRC/Wits Developmental Pathways for Health Research Unit, Department of Paediatrics, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg, 2193, South Africa.
| | - L K Micklesfield
- South African MRC/Wits Developmental Pathways for Health Research Unit, Department of Paediatrics, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg, 2193, South Africa
| | - L H Nyati
- South African MRC/Wits Developmental Pathways for Health Research Unit, Department of Paediatrics, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg, 2193, South Africa
| | - S A Norris
- South African MRC/Wits Developmental Pathways for Health Research Unit, Department of Paediatrics, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg, 2193, South Africa
| | - J M Pettifor
- South African MRC/Wits Developmental Pathways for Health Research Unit, Department of Paediatrics, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg, 2193, South Africa
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Carretero JM, Rodríguez L, García-González R, Quam RM, Arsuaga JL. Exploring bone volume and skeletal weight in the Middle Pleistocene humans from the Sima de los Huesos site (Sierra de Atapuerca, Spain). J Anat 2018; 233:740-754. [PMID: 30280382 DOI: 10.1111/joa.12886] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/20/2018] [Indexed: 11/26/2022] Open
Abstract
Body mass estimation in fossil human species is a crucial topic in paleoanthropology as it yields information about ecologically relevant characteristics. Nevertheless, variables crucial to body mass estimation such as bone volume and skeletal weight have never before been calculated in a fossil human species. The exceptional state of preservation of several fossil human long bones from the Sima de los Huesos (SH) Middle Pleistocene site, in the Sierra de Atapuerca, makes it possible to calculate for the first time the absolute bone volume in five complete long bones (two femora and three humeri) of a fossil human species, an approach not possible in fragmentary or poorly preserved fossils. We have relied on computed tomography scans and 3D reconstructions to calculate bone volume. A sample of 62 complete bones of robust recent humans was also used for comparative purposes. The male SH femora (weight-bearing bones) and humeri (non-weight-bearing bones) have, relative to their size, greater bone volume (volume of bone tissue over total bone volume) than the equivalent bones in our recent human sample. As mass is volume × density, and bone tissue density (as a material) is similar across mammals, we calculate bone mass, and our results show that the SH hominins had on average heavier long bones than extant humans of the same size. From the femoral weight at hand, we have estimated the total skeletal weight in two SH individuals, which is about 36% heavier than in the recent humans of the equivalent body size. Using different methods and skeletal variables, including skeletal weight, to estimate body mass in these two SH humans, we highlight the considerable differences in body mass estimates we obtained, and that the largest body mass estimate is the one based on the skeletal weight. Our results suggest that we cannot assume the same relative proportion of bone volume and bone and skeletal weight characterized the entire genus Homo. Given that skeletal weight has a significant influence on body mass, current body mass estimates of fossil Homo specimens could be systematically underestimated. Thus, the significantly larger bone volume and heavier bones, probably throughout the entire skeleton, of SH humans could have had consequences for many biological parameters in this Pleistocene population and considerable importance for studies focusing on adaptive and ecologically relevant characteristics. Although more recent human samples should be analyzed, in our view, the high skeletal robusticity of the SH sample, including larger bone volume and skeletal weight, is part of their adaptive body type selected for throughout the Pleistocene to support different mechanical and activity regimes and formed under tight genetic control, including control over bone formative and regulatory processes.
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Affiliation(s)
- José-Miguel Carretero
- Laboratorio de Evolución Humana, Universidad de Burgos, Edificio I+D+i, Burgos, Spain.,Centro UCM-ISCIII de Investigación sobre Evolución y Comportamiento Humanos, Madrid, Spain
| | - Laura Rodríguez
- Laboratorio de Evolución Humana, Universidad de Burgos, Edificio I+D+i, Burgos, Spain
| | | | - Rolf-Michael Quam
- Centro UCM-ISCIII de Investigación sobre Evolución y Comportamiento Humanos, Madrid, Spain.,Department of Anthropology, Binghamton University (SUNY), Binghamton, New York, USA.,Division of Anthropology, American Museum of Natural History, New York, New York, USA
| | - Juan-Luis Arsuaga
- Centro UCM-ISCIII de Investigación sobre Evolución y Comportamiento Humanos, Madrid, Spain.,Facultad de Ciencias Geológicas, Departamento de Paleontología, Universidad Complutense de Madrid, Madrid, Spain
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39
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Cowgill LW, Johnston RA. Biomechanical implications of the onset of walking. J Hum Evol 2018; 122:133-145. [DOI: 10.1016/j.jhevol.2018.06.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 05/30/2018] [Accepted: 06/01/2018] [Indexed: 11/30/2022]
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40
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Pomeroy E, Mushrif-Tripathy V, Kulkarni B, Kinra S, Stock JT, Cole TJ, Shirley MK, Wells JCK. Estimating body mass and composition from proximal femur dimensions using dual energy x-ray absorptiometry. ARCHAEOLOGICAL AND ANTHROPOLOGICAL SCIENCES 2018; 11:2167-2179. [PMID: 31565085 PMCID: PMC6743672 DOI: 10.1007/s12520-018-0665-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Accepted: 06/04/2018] [Indexed: 06/10/2023]
Abstract
Body mass prediction from the skeleton most commonly employs femoral head diameter (FHD). However, theoretical predictions and empirical data suggest the relationship between mass and FHD is strongest in young adults, that bone dimensions reflect lean mass better than body or fat mass and that other femoral measurements may be superior. Here, we generate prediction equations for body mass and its components using femoral head, neck and proximal shaft diameters and body composition data derived from dual-energy x-ray absorptiometry (DXA) scans of young adults (n = 155, 77 females and 78 males, mean age 22.7 ± 1.3 years) from the Andhra Pradesh Children and Parents Study, Hyderabad, India. Sex-specific regression of log-transformed data on femoral measurements predicted lean mass with smaller standard errors of estimate (SEEs) than body mass (12-14% and 16-17% respectively), while none of the femoral measurements were significant predictors of fat mass. Subtrochanteric mediolateral shaft diameter gave lower SEEs for lean mass in both sexes and for body mass in males than FHD, while FHD was a better predictor of body mass in women. Our results provide further evidence that lean mass is more closely related to proximal femur dimensions than body or fat mass and that proximal shaft diameter is a better predictor than FHD of lean but not always body mass. The mechanisms underlying these relationships have implications for selecting the most appropriate measurement and reference sample for estimating body or lean mass, which also depend on the question under investigation.
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Affiliation(s)
- Emma Pomeroy
- School of Natural Sciences and Psychology, Liverpool John Moores University, Byrom Street, Liverpool, L3 3AF UK
| | | | | | - Sanjay Kinra
- Department of Non-communicable Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, UK
| | - Jay T. Stock
- ADaPt Project, PAVE Research Group, Department of Archaeology and Anthropology, University of Cambridge, Cambridge, UK
| | - Tim J. Cole
- UCL Great Ormond Street Institute of Child Health, UCL, London, UK
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41
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Lombardo MP, Deaner RO. On The Evolution of The Sex Differences in Throwing: Throwing is a Male Adaptation in Humans. QUARTERLY REVIEW OF BIOLOGY 2018. [DOI: 10.1086/698225] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Pomeroy E, Macintosh A, Wells JC, Cole TJ, Stock JT. Relationship between body mass, lean mass, fat mass, and limb bone cross-sectional geometry: Implications for estimating body mass and physique from the skeleton. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2018; 166:56-69. [PMID: 29344931 PMCID: PMC6178563 DOI: 10.1002/ajpa.23398] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Revised: 12/16/2017] [Accepted: 12/18/2017] [Indexed: 11/08/2022]
Abstract
OBJECTIVES Estimating body mass from skeletal dimensions is widely practiced, but methods for estimating its components (lean and fat mass) are poorly developed. The ability to estimate these characteristics would offer new insights into the evolution of body composition and its variation relative to past and present health. This study investigates the potential of long bone cross-sectional properties as predictors of body, lean, and fat mass. MATERIALS AND METHODS Humerus, femur and tibia midshaft cross-sectional properties were measured by peripheral quantitative computed tomography in sample of young adult women (n = 105) characterized by a range of activity levels. Body composition was estimated from bioimpedance analysis. RESULTS Lean mass correlated most strongly with both upper and lower limb bone properties (r values up to 0.74), while fat mass showed weak correlations (r ≤ 0.29). Estimation equations generated from tibial midshaft properties indicated that lean mass could be estimated relatively reliably, with some improvement using logged data and including bone length in the models (minimum standard error of estimate = 8.9%). Body mass prediction was less reliable and fat mass only poorly predicted (standard errors of estimate ≥11.9% and >33%, respectively). DISCUSSION Lean mass can be predicted more reliably than body mass from limb bone cross-sectional properties. The results highlight the potential for studying evolutionary trends in lean mass from skeletal remains, and have implications for understanding the relationship between bone morphology and body mass or composition.
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Affiliation(s)
- Emma Pomeroy
- School of Natural Sciences and PsychologyLiverpool John Moores UniversityLiverpool, L3 3AFUnited Kingdom
| | - Alison Macintosh
- ADaPt Project, PAVE Research Group, Department of Archaeology and AnthropologyUniversity of CambridgeCambridge, CB2 3QGUnited Kingdom
| | - Jonathan C.K. Wells
- UCL Great Ormond Street Institute of Child HealthLondon, WC1N 1EHUnited Kingdom
| | - Tim J. Cole
- UCL Great Ormond Street Institute of Child HealthLondon, WC1N 1EHUnited Kingdom
| | - Jay T. Stock
- ADaPt Project, PAVE Research Group, Department of Archaeology and AnthropologyUniversity of CambridgeCambridge, CB2 3QGUnited Kingdom
- Department of AnthropologyUniversity of Western OntarioLondonOntario, N6A 3K7Canada
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43
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Scopa Kelso R. Mississippian subadults from the Middle Cumberland and Eastern regions of Tennessee: Biological indicators of population interaction. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2018; 166:417-432. [PMID: 29473673 DOI: 10.1002/ajpa.23442] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 01/29/2018] [Accepted: 02/01/2018] [Indexed: 11/06/2022]
Abstract
OBJECTIVES Human subadult skeletal remains can provide a unique perspective into biosocial aspects of Mississippian period population interactions within and between the Middle Cumberland (MCR) and Eastern Tennessee Regions (ETR). The majority of previous studies have concentrated on adult skeletal remains, leaving out a large and extremely important population segment. METHODS Skeletal indicators of disease, growth, body proportions, and metabolic stress were collected from subadult remains from five archaeological sites over several temporal periods. Crucial to overcoming limitations associated with the osteological paradox, the biological results were placed into an archaeological context based on prior studies as well as paleoclimatological data. RESULTS Results reveal homogeneity both within and between regions for most skeletal indicators. However, MCR individuals exhibit a higher frequency of pathology than those from ETC, while stature is significantly lower in younger subadults from the MCR. Within the ETR, there is no evidence for biological differences between Early Dallas and subsequent Late Dallas and Mouse Creek cultural phases. Despite presumed signs of increased conflict at the Dallas site, frequencies and types of skeletal pathology and growth disruptions are comparable to other regional sites. CONCLUSIONS These findings suggest that despite cultural differences between the ETR and MCR, there was no large-scale intrusion from an outside population into the ETR during the Late Mississippian Period, or if one occurred, it is biologically invisible. Combined with climatic and archaeobotanical data, results suggest the MCR subadults were under increased stress in their earlier years. This may have been associated with increased interpersonal violence and dependence on few food sources occurring with greater scarcity.
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Affiliation(s)
- Rebecca Scopa Kelso
- Department of Biomedical Sciences, West Virginia School of Osteopathic Medicine, Lewisburg, West Virginia
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Perchalski B, Placke A, Sukhdeo SM, Shaw CN, Gosman JH, Raichlen DA, Ryan TM. Asymmetry in the Cortical and Trabecular Bone of the Human Humerus During Development. Anat Rec (Hoboken) 2018; 301:1012-1025. [PMID: 29055969 DOI: 10.1002/ar.23705] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 04/11/2017] [Accepted: 05/15/2017] [Indexed: 11/10/2022]
Abstract
Many studies have noted that the bones of the human upper limb display bilateral asymmetry, commonly linking this asymmetry in external and internal morphology to handedness and lateralization. Few studies, however, have attempted to track asymmetry throughout ontogeny. This study assesses the ontogenetic development of cortical and trabecular bone asymmetry in the humerus. We predict that directional asymmetry in structural properties will emerge in concert with hand preference and increased activity levels during the juvenile period. Paired humeri from 57 individuals from the Norris Farms #36 archaeological skeletal collection ranging in age from neonate to adult were used in the current study. Cortical bone cross-sectional properties and three-dimensional trabecular bone structure were quantified from microcomputed tomography data. The results indicate significant absolute asymmetry in all measured cortical and trabecular bone variables across all ages. Trabecular bone displays significantly higher absolute asymmetry than cortical bone. Contrary to expectations, however, this study found very little evidence for significant directional asymmetry in humeral length and cortical or trabecular bone variables, except in adults. The presence of significant absolute asymmetry in all age groups, and the lack of significant directional asymmetry in almost all variables at all ages, suggests that structural differences due to higher levels of habitual loading in the dominant arm are overlain on a template of potentially significant existing asymmetry. Anat Rec, 301:1012-1025, 2018. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Bernadette Perchalski
- Department of Anthropology, Pennsylvania State University, University Park, Pennsylvania
| | - Arielle Placke
- Department of Anthropology, Pennsylvania State University, University Park, Pennsylvania
| | - Simone M Sukhdeo
- Department of Anthropology, Pennsylvania State University, University Park, Pennsylvania
| | - Colin N Shaw
- Phenotypic Adaptability, Variation and Evolution Research Group, Department of Archaeology and Anthropology, University of Cambridge, Cambridge, United Kingdom
| | - James H Gosman
- Department of Anthropology, Ohio State University, Columbus, Ohio
| | | | - Timothy M Ryan
- Department of Anthropology, Pennsylvania State University, University Park, Pennsylvania.,Center for Quantitative Imaging, EMS Energy Institute, Pennsylvania State University, University Park, Pennsylvania
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45
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Evaluating morphometric body mass prediction equations with a juvenile human test sample: accuracy and applicability to small-bodied hominins. J Hum Evol 2018; 115:65-77. [DOI: 10.1016/j.jhevol.2017.03.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 03/13/2017] [Accepted: 03/14/2017] [Indexed: 11/18/2022]
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46
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Juvenile body mass estimation: A methodological evaluation. J Hum Evol 2018; 115:78-84. [DOI: 10.1016/j.jhevol.2017.07.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 06/23/2017] [Accepted: 07/10/2017] [Indexed: 11/18/2022]
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47
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Xing S, Carlson KJ, Wei P, He J, Liu W. Morphology and structure of Homo erectus humeri from Zhoukoudian, Locality 1. PeerJ 2018; 6:e4279. [PMID: 29372121 PMCID: PMC5777375 DOI: 10.7717/peerj.4279] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Accepted: 12/29/2017] [Indexed: 11/20/2022] Open
Abstract
Background Regional diversity in the morphology of the H. erectus postcranium is not broadly documented, in part, because of the paucity of Asian sites preserving postcranial fossils. Yet, such an understanding of the initial hominin taxon to spread throughout multiple regions of the world is fundamental to documenting the adaptive responses to selective forces operating during this period of human evolution. Methods The current study reports the first humeral rigidity and strength properties of East Asian H. erectus and places its diaphyseal robusticity into broader regional and temporal contexts. We estimate true cross-sectional properties of Zhoukoudian Humerus II and quantify new diaphyseal properties of Humerus III using high resolution computed tomography. Comparative data for African H. erectus and Eurasian Late Pleistocene H. sapiens were assembled, and new data were generated from two modern Chinese populations. Results Differences between East Asian and African H. erectus were inconsistently expressed in humeral cortical thickness. In contrast, East Asian H. erectus appears to exhibit greater humeral robusticity compared to African H. erectus when standardizing diaphyseal properties by the product of estimated body mass and humeral length. East Asian H. erectus humeri typically differed less in standardized properties from those of side-matched Late Pleistocene hominins (e.g., Neanderthals and more recent Upper Paleolithic modern humans) than did African H. erectus, and often fell in the lower range of Late Pleistocene humeral rigidity or strength properties. Discussion Quantitative comparisons indicate that regional variability in humeral midshaft robusticity may characterize H. erectus to a greater extent than presently recognized. This may suggest a temporal difference within H. erectus, or possibly different ecogeographical trends and/or upper limb loading patterns across the taxon. Both discovery and analysis of more adult H. erectus humeri are critical to further evaluating and potentially distinguishing between these possibilities.
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Affiliation(s)
- Song Xing
- Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing, China
| | - Kristian J Carlson
- Department of Integrative Anatomical Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.,Evolutionary Studies Institute, University of the Witwatersrand, Johannesburg, South Africa
| | - Pianpian Wei
- Evolutionary Studies Institute, University of the Witwatersrand, Johannesburg, South Africa.,MOE Key Laboratory of Contemporary Anthropology, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China
| | - Jianing He
- School of Archaeology and Museology, Peking University, Beijing, China
| | - Wu Liu
- Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing, China
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48
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Tomczyk J, Nieczuja-Dwojacka J, Zalewska M, Niemiro W, Olczyk W. Sex estimation of upper long bones by selected measurements in a Radom (Poland) population from the 18th and 19th centuries AD. ANTHROPOLOGICAL REVIEW 2017. [DOI: 10.1515/anre-2017-0019] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Several studies have shown that sex estimation methods based on measurements of the skeleton are specific to populations. Metric traits of the upper long bones have been reported as reliable indicators of sex. This study was designed to determine whether the four long bones can be used for the sex estimation of an historical skeletal population from Radom (Poland). The material used consists of the bones of 169 adult individuals (including 103 males and 66 females) from the 18th and 19th centuries. Twelve measurements were recovered from clavicle, humerus, radius and ulna. The initial comparison of males and females indicated significant differences in all measurements (p < 0.0001). The accuracy of sex estimation ranged from 68% to 84%. The best predictor for sex estimation of all the measurements in Radom’s population was the maximum length of the radius (84%), and the ulna (83%), and the vertical diameter of the humeral head (83%). The Generalized Linear Model (GLM) detected the strongest significant relationship between referential sex and the vertical diameter of the humeral head (p < 0.0001), followed by the maximal length of the ulna (p = 0.0117). In other measurements of the upper long bones, GLM did not detect statistically significant differences.
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Affiliation(s)
- Jacek Tomczyk
- Department of Biological Anthropology, Institute of Ecology and Bioethics , Cardinal Stefan Wyszyński University in Warsaw , Poland
| | - Joanna Nieczuja-Dwojacka
- Department of Human Ecology, Faculty of Biology and Environmental Sciences , Cardinal Stefan Wyszyński University in Warsaw , Poland
| | - Marta Zalewska
- Department of Environmental Hazard Prevention and Allergology , Medical University of Warsaw , Poland
| | - Wojciech Niemiro
- Faculty of Mathematics, Informatics and Mechanics , University of Warsaw , Poland
- Faculty of Mathematics and Computer Science , Nicolaus Copernicus University , Toruń , Poland
| | - Wioleta Olczyk
- Department of Human Ecology, Faculty of Biology and Environmental Sciences , Cardinal Stefan Wyszyński University in Warsaw , Poland
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49
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Ireland A, Muthuri S, Rittweger J, Adams JE, Ward KA, Kuh D, Cooper R. Later Age at Onset of Independent Walking Is Associated With Lower Bone Strength at Fracture-Prone Sites in Older Men. J Bone Miner Res 2017; 32:1209-1217. [PMID: 28181695 PMCID: PMC5466883 DOI: 10.1002/jbmr.3099] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 01/20/2017] [Accepted: 01/27/2017] [Indexed: 12/21/2022]
Abstract
Later age at onset of independent walking is associated with lower leg bone strength in childhood and adolescence. However, it is unknown whether these associations persist into older age or whether they are evident at axial (central) or upper limb sites. Therefore, we examined walking age obtained at age 2 years and bone outcomes obtained by dual-energy X-ray absorptiometry (DXA) and peripheral quantitative computed tomography (pQCT) scans at ages 60 to 64 years in a nationally representative cohort study of British people, the MRC National Survey of Health and Development. It was hypothesized that later walking age would be associated with lower bone strength at all sites. Later independent walking age was associated with lower height-adjusted hip (standardized regression coefficients with 95% confidence interval [CI] -0.179 [-0.251 to -0.107]), spine (-0.157 [-0.232 to -0.082]), and distal radius (-0.159 [-0.245 to -0.073]) bone mineral content (BMC, indicating bone compressive strength) in men (all p < 0.001). Adjustment for covariates partially attenuated these associations, primarily because of lower lean mass and adolescent sporting ability in later walkers. These associations were also evident for a number of hip geometric parameters (including cross-sectional moment of inertia [CSMI], indicating bone bending/torsional strength) assessed by hip structural analysis (HSA) from DXA scans. Similar height-adjusted associations were also observed in women for several hip, spine, and upper limb outcomes, although adjustment for fat or lean mass led to complete attenuation for most outcomes, with the exception of femoral shaft CSMI and spine bone area (BA). In conclusion, later independent walking age appears to have a lifelong association with bone strength across multiple skeletal sites in men. These effects may result from direct effects of early life loading on bone growth and mediation by adult body composition. Results suggest that late walking age may represent a novel risk factor for subsequent low bone strength. Existing interventions effective in hastening walking age may have positive effects on bone across life. © 2017 The Authors. Journal of Bone and Mineral Research Published by Wiley Periodicals Inc.
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Affiliation(s)
- Alex Ireland
- School of Healthcare Science, Manchester Metropolitan University, Manchester, UK
| | - Stella Muthuri
- MRC Unit for Lifelong Health and Ageing at UCL, London, UK
| | - Joern Rittweger
- Division of Space Physiology, Institute of Aerospace Medicine, German Aerospace Center, Cologne, Germany.,Department of Pediatrics and Adolescent Medicine, University of Cologne, Cologne, Germany
| | - Judith E Adams
- Clinical Radiology, Manchester Royal Infirmary, Manchester, UK.,Academic Health Science, Manchester University Hospital NHS Foundation Trust, Manchester, UK.,Division of Informatics, Imaging, and Data Sciences, Faculty of Biology, Medicine, and Health, University of Manchester, Manchester, UK
| | - Kate A Ward
- MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton, UK.,MRC Elsie Widdowson Laboratory, Cambridge, UK
| | - Diana Kuh
- MRC Unit for Lifelong Health and Ageing at UCL, London, UK
| | - Rachel Cooper
- MRC Unit for Lifelong Health and Ageing at UCL, London, UK
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50
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Maia MZ, Santos GK, Batista ACM, Reis AMS, Silva JF, Ribeiro LGR, Ocarino NDM, Serakides R. Effects of excess maternal thyroxin on the bones of rat offspring from birth to the post-weaning period. ARCHIVES OF ENDOCRINOLOGY AND METABOLISM 2017; 60:130-7. [PMID: 27191047 DOI: 10.1590/2359-3997000000168] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Accepted: 02/28/2016] [Indexed: 11/22/2022]
Abstract
Objective To evaluate, in rat offspring, bone changes induced by excess maternal thyroxin during pregnancy and lactation, and to assess the reversibility of these changes after weaning. Material and methods Twenty Wistar rats were distributed in two groups, hyperthyroid and control, that were treated daily with L-thyroxin (50 mcg/animal) and placebo, respectively. The treatment was initiated seven days before mating and continued throughout pregnancy and lactation. From every female of each of the two groups, two offspring were euthanized after birth, two at 21 days of age (weaning), and two at 42 days of age (21 days after weaning). In newborns, the length of pelvic and thoracic limbs were measured, and in the other animals, the length and width of the femur and humerus were measured. Bones were dissected, decalcified, embedded in paraffin, and analyzed histomorphometrically. Results Excess maternal thyroxin significantly reduced the length of the pelvic limb in neonates. In 21-day-old individuals, excess maternal thyroxine reduced the length and the width of the femur and the humerus. It also increased thickness of the epiphyseal plate and the percentage of trabecular bone tissue. In 42-day-old individuals, there were no significant differences between groups in relation to the parameters evaluated in the previous periods. Conclusion Excess maternal thyroxine reduced growth in suckling rats both at birth and at weaning, and it also increased the percentage of trabecular bone tissue in 21-day-old animals. These changes, however, were reversible at 42 days, i.e., 21 days after weaning. Arch Endocrinol Metab. 2016;60(2):130-7.
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Affiliation(s)
- Mariana Zanini Maia
- Departamento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - Gianne Karla Santos
- Departamento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - Ana Claudia Moura Batista
- Departamento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - Amanda Maria Sena Reis
- Departamento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - Juneo Freitas Silva
- Departamento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - Lorena Gabriela Rocha Ribeiro
- Departamento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - Natália de Melo Ocarino
- Departamento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - Rogéria Serakides
- Departamento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
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