ANAT30007 Lecture Notes - Lecture 34: Ischium, Hamstring, Femur
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Anterior placement of sacrum (large lumbosacral angle)
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Wide pelvis
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Long pubis
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Neanderthal pelvis
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Sapiens: Head of neonate passes through first facing laterally, then posteriorly
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Afarensis: would require assisted birth (social condition)
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Obstetric behaviour
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Short iliac blades
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Coronal orientation of iliac
blades
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Hamstring position on ischium
ape-like
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Narrow hips
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Modern pelvic shape
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Lower limb
Femur
Locomotor Page 7
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(A) Chimpanzee (B) Orrorin (C and D) Paranthropus robustus, (E) A. afarensis (F) Paranthropus
boisei (G) Homo habilis (H) modern human
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Head grows in size, neck angle changes
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Becomes more robust for weight bearing
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Tibia
Laetolil footprints
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A. afarensis
Foot
Locomotor Page 8