![]() Stiffness of the human foot and evolution of the transverse arch. Conventional wisdom has always claimed that the human mid-foot is rigid, which allows more efficient walking while chimpanzees and other apes have flexible feet better suited to grasping branches as they move through the trees. This renewed understanding of the human foot may improve the treatment of flatfoot disorders and the study of foot function in human motion, the researchers say.ġ. Chimpanzee feet are quite different from human feet and there is much to be gleaned from the difference. Together, these arches contribute to the stiffness of human foot, they report. Tracking the growth and evolution of primate feet, including that of extinct human ancestors, the researchers found that only the genus Homo had fully developed arches (MLA and TTA). They found that the TTA is responsible for more than 40% of the stiffness in our feet. One cool thing about knuckle-walking is that it leaves your hands free to carry your dolls: While chimpanzees are mainly quadrupedal when walking and standing (of course they can. The scientists, including a researcher from the Jawaharlal Nehru Centre for Advanced Scientific Research in Bangalore, India, performed three-point bending tests on these models. Chimpanzees have long arms with long-fingered hands and they bend their fingers underneath, walking on the knuckles of their hands and the flat part of their feet. Studying mechanical mimics of the midfoot, human cadaveric feet and fossil foot bones, the researchers tried to find out the TTA’s contribution to stiffness of the human feet. Researchers have mostly studied the medial longitudinal arch (MLA), which runs from the heel to the ball of the foot, ignoring the role of the transverse tarsal arch (TTA), which runs across the foot. kg and measure 1m20 in the bipedal position, i.e. Unlike primates such as chimpanzees and gorillas, who have flexible flat feet, humans have stiff, arched feet. For instance, humans and chimpanzees share at least 98.4 of their DNA. The findings will be useful in improving the design of artificial limbs and robotic feet. ![]() An international research team now explains how humans evolved two unique arches in the foot that help this uprightness 1. Download Citation On Apr 27, 2005, Herbert Elftman and others published Chimpanzee and human feet in bipdal walking Find, read and cite all the research.
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