Trabecular architecture in the thumb of Pan and Homo
Implications for investigating hand use, loading, and hand preference in the fossil record
Bibliographic Data
OBJECTIVES: Humans display an 85-95% cross-cultural right-hand bias in skilled tasks, which is considered a derived behavior because such a high frequency is not reported in wild non-human primates. Handedness is generally considered to be an evolutionary byproduct of selection for manual dexterity and augmented visuo-cognitive capabilities within the context of complex stone tool manufacture/use. Testing this hypothesis requires an understanding of when appreciable levels of right dominant behavior entered the fossil record. Because bone remodels in vivo, skeletal asymmetries are thought to reflect greater mechanical loading on the dominant side, but incomplete preservation of external morphology and ambiguities about past loading environments complicate interpretations. We test if internal trabecular bone is capable of providing additional information by analyzing the thumb of Homo sapiens and Pan. MATERIALS AND METHODS: We assess trabecular structure at the distal head and proximal base of paired (left/right) first metacarpals using micro-CT scans of Homo sapiens (n = 14) and Pan (n = 9). Throughout each epiphysis we quantify average and local bone volume fraction (BV/TV), degree of anisotropy (DA), and elastic modulus (E) to address bone volume patterning and directional asymmetry. RESULTS: We find a right directional asymmetry in H. sapiens consistent with population-level handedness, but also report a left directional asymmetry in Pan that may be the result of postural and/or locomotor loading. CONCLUSION: We conclude that trabecular bone is capable of detecting right/left directional asymmetry, but suggest coupling studies of internal structure with analyses of other skeletal elements and cortical bone prior to applications in the fossil record
Asymmetry · Biology · Context (archaeology) · Evolutionary biology · Geography · Homo sapiens · Physics · Population · Anatomy · Hemispheric Asymmetry in Neuroscience · Medicine · Paleontology · Pleistocene-Era Hominins and Archaeology · Primate Behavior and Ecology
Trabecular structure of the proximal and distal ulna in extant primates
Impacted Bones
Right or left? Determining the hand holding the tool from use traces
Flake morphology as a record of manual pressure during stone tool production
Using point clouds to investigate the relationship between trabecular bone phenotype and behavior
Combinations of trabecular and cortical bone properties distinguish various loading modalities between athletes and controls
Automated resolution independent method for comparing in vivo and dry trabecular bone
Trabecular bone functional adaptation and sexual dimorphism in the human foot
Ontogeny and variability of trabecular bone in the chimpanzee humerus, femur and tibia
Trabecular variation in the first metacarpal and manipulation in hominids
Intensive terrestrial or marine locomotor strategies are associated with inter‐ and intra‐limb bone functional adaptation in living female athletes
Trabecular bone patterning across the human hand
Trabecular bone structure scales allometrically in the foot of four human groups
Functional insights from an exploration of the inner structure of the patella
Trabecular Analysis of the Distal Radial Metaphysis during the Acquisition of Crawling and Bipedal Walking in Childhood
Right handedness of Homo heidelbergensis from Sima de los Huesos (Atapuerca, Spain) 500,000 years ago
Muscle architecture of the common chimpanzee (Pan troglodytes)
Ant fishing by wild chimpanzees is not lateralised
Gracility of the modern Homo sapiens skeleton is the result of decreased biomechanical loading
BoneJ
Trabecular bone in the bird knee responds with high sensitivity to changes in load orientation
Studies of the Hands of Living Primates
A Wolff in sheep's clothing
Human-like hand use in Australopithecus africanus
Recent origin of low trabecular bone density in modern humans
Neural correlates of Early Stone Age toolmaking
Stone tools, language and the brain in human evolution
Bone “mass” and the “mechanostat”
A Study of Fluctuating Asymmetry
Hand Preferences in the Skilled Gathering Tasks of Mountain Gorillas (Gorilla g. berengei)
Tool making, hand morphology and fossil hominins
The evolutionary history of the hominin hand since the last common ancestor of Pan and Homo
The Effect of Mechanical Loading on the Size and Shape of Bone in Pre-, Peri-, and Postpubertal Girls
Second metacarpal cross-sectional geometry
Neanderthal hands in their proper perspective
Hand preferences in captive gorillas, orang‐utans and gibbons
Asymmetries in postural control and locomotion in chimpanzees (Pan troglodytes)
Laterality in quadrupedal and bipedal prosimians
Patterns of lateralized hand use in an arboreal primate, Simias concolor
Chimpanzee thumb muscle cross sections, moment arms and potential torques, and comparisons with humans
EMG study of hand muscle recruitment during hard hammer percussion manufacture of Oldowan tools
Precision grips, hand morphology, and tools
How and why humans grow thin skulls
Determining Hominid Handedness in Lithic Debitage
A Case of Marked Bilateral Asymmetry in the Upper Limbs of an Upper Palaeolithic Male from Barma Grande (Liguria), Italy
Asymmetry in Metacarpal Cortical Bone in a Collection of British Post-Mediaeval Human Skeletons
Technology based evolution? A biometric test of the effects of handsize versus tool form on efficiency in an experimental cutting task
Chimpanzee and human grips
Handedness in wild chimpanzees
Postcranial robusticity in Homo . II
Articular structure and function in Hylobates, Colobus , and Papio
Who's afraid of the big bad Wolff
Linking structural variability in long bone diaphyses to habitual behaviors
Brief communication
Grips and hand movements of chimpanzees during feeding in M ahale M ountains N ational P ark, T anzania
Does skeletal anatomy reflect adaptation to locomotor patterns? cortical and trabecular architecture in human and nonhuman anthropoids
Comparative morphology of the pollical distal phalanx
Metacarpal trabecular architecture variation in the chimpanzee ( Pan troglodytes )
Functional significance of genetic variation underlying limb bone diaphyseal structure
A new high‐resolution computed tomography (CT) segmentation method for trabecular bone architectural analysis
Hand dominance and bilateral asymmetry in the structure of the second metacarpal
Preliminary observations on the calcaneal trabecular microarchitecture of extant large‐bodied hominoids
Shape variation of the human pollical distal phalanx and metacarpal
Comparative and functional morphology of hominoid fingers
Articular area responses to mechanical loading
Mechanical advantages of the Neandertal thumb in flexion
Three‐dimensional analysis of nonhuman primate trabecular architecture using micro‐computed tomography
Mechanical significance of femoral head trabecular bone structure in Loris and Galago evaluated using micromechanical finite element models
Manual digital pressures during knuckle‐walking in chimpanzees ( Pan troglodytes )
Manual pressure distribution patterns of knuckle‐walking apes
Mechanical implications of chimpanzee positional behavior
Bilateral asymmetry in the limb bones of the chimpanzee ( Pan troglodytes )
Isotopic and dental evidence for infant and young child feeding practices in an imperial Roman skeletal sample
The aging of Wolff's ?law
The thumb of Miocene apes
Functional capabilities of modern and fossil hominid hands
Limb bone bilateral asymmetry
Evolution and homologies of primate and modern human hand and forearm muscles, with notes on thumb movements and tool use
Is ‘hand preference’ coded in the hominin skeleton? An in-vivo study of bilateral morphological variation
Variation in the Frequency of Left‐handedness in Traditional Societies
The three-dimensional structure of trabecular bone in the femoral head of strepsirrhine primates
Archaeological evidence for preferential right-handedness in the lower and middle pleistocene, and its possible implications
The cross-sectional geometry of the hand and foot bones of the Hominoidea and its relationship to locomotor behavior
Million-year-old stone tools and associated bones from OGS-6 and OGS-7, Gona, Afar, Ethiopia
Femoral head trabecular bone structure in two omomyid primates
The evolution of human bipedality
The prehistory of handedness
Articular constraint, handedness, and directional asymmetry in the human second metacarpal
Trabecular bone ontogeny in the human proximal femur
Buccal striations on fossil human anterior teeth
Hunter-gatherer postcranial robusticity relative to patterns of mobility, climatic adaptation, and selection for tissue economy
Locomotor and postural development of wild chimpanzees
The evolution of the hominin thumb and the influence exerted by the non-dominant hand during stone tool production
Bipedal tool use strengthens chimpanzee hand preferences
Hand pressure distribution during Oldowan stone tool production
Do bimanual coordination, tool use, and body posture contribute equally to hand preferences in bonobos
Hand biomechanics during simulated stone tool use
Comparative forefoot trabecular bone architecture in extant hominids
Trabecular bone anisotropy and orientation in an Early Pleistocene hominin talus from East Turkana, Kenya
Hand preferences for coordinated bimanual actions in 777 great apes
Edge Modification as an Indicator of Function and Handedness of Acheulian Handaxes from Kariandusi, Kenya
Patterns of strain in the macaque ulna during functional activity
Neandertal capitate-metacarpal articular morphology
Morphology of the first metacarpal of neandertal individuals from the Crimea
Chimpanzees, Tools, and Termites
| Unique citing works | 15 |
|---|---|
| Citations per year | 1,67 |
| Citation span | 2017 - 2026 (10) |
| Citation velocity | current |
| Highly cited | No |
| Citation types | Neutral: 14 |