Chimpanzee bipedal locomotion in the Gombe National Park, East Africa

摘要: An adult male chimpanzee in the natural habitat has been observed to walk predominantly bipedally after a total forelimb paralysis 1966. The major differences from previously described bipedal gait are (1) one third of femoral extension is posterior hip joint propulsion, (2) excursion swinging foot close midline, due adduction lower hindlimb swing and propulsive phases, (3) depressed pelvic tilt on side limb, (4) thoracic vertebrae rotate vertical erect, (5) there only moderate lateral sway midline. This locomotory complex interpreted as individual variability suggests an evolutionary model for origin hominid locomotion.