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  LEONARDO’S FOOT

  HOW 10 TOES, 52 BONES, AND 66 MUSCLES

  SHAPED THE HUMAN WORLD

  LEONARDO’S FOOT

  HOW 10 TOES, 52 BONES, AND 66 MUSCLES

  SHAPED THE HUMAN WORLD

  CAROL ANN RINZLER

  BELLEVUE LITERARY PRESS

  New York

  First published in the United States in 2013 by Bellevue Literary Press, New York

  FOR INFORMATION CONTACT:

  Bellevue Literary Press

  NYU School of Medicine

  550 First Avenue

  OBV A612

  New York, NY 10016

  Copyright © 2013 by Carol Ann Rinzler

  All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system now known or to be invented, without permission in writing from the publisher, except by a reviewer who wishes to quote brief passages in connection with a print, online, or broadcast review.

  Bellevue Literary Press would like to thank all its generous donors—individuals and foundations—for their support.

  Library of Congress Cataloging-in-Publication Data

  Rinzler, Carol Ann.

  Leonardo’s foot : how 10 toes, 52 bones, and 66 muscles shaped the human world / Carol Ann Rinzler. — 1st ed.

  p. ; cm.

  Includes bibliographical references and index.

  ISBN 978-1-934137-63-5

  I. Title.

  [DNLM: 1. Anthropology, Physical—history—Popular Works. 2. Biological Evolution--Popular Works. 3. Foot—Popular Works. 4. History of Medicine—Popular Works. GN 50.4]

  QP34.5

  612—dc23

  2013004519

  Book design and type formatting by Mulberry Tree Press, Inc. Manufactured in the United States of America

  First Edition

  10987654321

  “The human foot is a masterpiece of engineering and a work of art.”

  Leonardo da Vinci, The Notebooks (c. 1508–1518)

  For

  Perry Luntz

  MARCH 9, 1927–APRIL 13, 2009

  and

  Patricia Marie Dolan

  MAY 6, 1939–NOVEMBER 15, 2011

  CONTENTS

  Illustrations

  Introduction

  1Destiny

  From there to here

  The anthropology of an upright posture

  Determining destiny

  The architecture of the biped body

  2Disability

  First impressions, catalogues, and curiosities

  Cruel and unusual cures

  Entering the genome

  3Difference

  Creating the curve

  The discriminating drama of the different foot

  Fixing or not fixing the no-problem problem

  Foot rules and rulers

  4Diet

  Naming, not taming, the beast

  Podiatric protein problems

  Power, prevention, and sexual prowess

  Gout’s white shoe fraternity

  Cutting corns and cultivating customers

  Safe, effective—and expensive

  5Desire

  The heart wants what the nose knows

  Do gods have feet?

  Uncovering what’s inside

  Objects of desire

  Building the perfect foot

  Appendix: Pais, ped, pod

  Sources and Bibliography

  Index

  ILLUSTRATIONS

  Koala hand with two thumbs vs. foot with one thumb.

  Vitruvian Man, Leonardo da Vinci, c. 1490.

  Human skull, Gray’s Anatomy, 1918.

  Ape and human spines, courtesy of Joe Gannon, Mulberry Tree Press, Inc.

  Ape and human dental arch, from Kimball’s Biology Pages, http://biology-pages.info.

  Frontispiece, Les Oeuvres de M. Ambroise Paré, 1585

  Human Foot, Gray’s Anatomy, 1918.

  The Birth of Venus, Sandro Botticelli, 1486.

  In the Dance Studio, Edgar Degas, c. 1897.

  Footprint of the Buddha, c. 1st century.

  The great god Pan, A Dictionary of Classical Antiquities, Dr. Oskar Seyffert, 1902.

  Cartoon of Jews extracting Christian blood to be used in religious ritual, Der Sturmer, 1934.

  Map of Negro Foot, Hanover County, Virginia. U.S. Department of the Interior.

  Advertisement for Dr. Scholl’s “Foot-Eazer,” The Literary Digest, April 1912.

  Three types of human feet, E.H. Bradford, “The Human Foot in Art,” Journal of Bone and Joint Surgery (American), May 1, 1897, s1-10 (1):148–161.

  The chemical structures of caffeine, theophylline, theobromine, adenine and guanine.

  The Gout, James Gillray, 1799.

  Frontispiece, The Poore-Mans Plaster-Box, by Richard Hawes, 1634.

  Falstaff and a Page, Adolf Schrödter, 1867.

  Drawing of the wheelchair of King Phillip II of Spain, 1595.

  One penny tax stamp, 1765.

  Cendrillon, Gustave Doré, c. 1862.

  The Coccyx (Tailbone), anterior and posterior surfaces, Gray’s Anatomy, 1918.

  Jesus through the ages.

  The Creation of Adam, Michelangelo, 1511.

  Map of the sensory and motor areas of the brain, Epilepsy and the Functional Anatomy of the Human Brain, by Wilder Penfield and Henri Jasper, 1951.

  X-ray of bound feet, Library of Congress.

  Photograph of bound foot, China and Japan, by Ernst v. Hesse-Wartegg, 1900.

  The Rake at Rose Tavern, William Hogarth, 1733.

  LEONARDO’S FOOT

  HOW 10 TOES, 52 BONES, AND 66 MUSCLES

  SHAPED THE HUMAN WORLD

  INTRODUCTION

  BOOKS HAPPEN.

  You read something or a friend says something or you’re walking down the street and you see something and you say to yourself, that’s interesting. Then everywhere you look you see something about the something, and sooner or later the something turns into an idea and the idea turns into a proposal and then, if you’re lucky, into a book.

  One August morning in 2011, as I was lacing up my sneakers, I looked down at my underwhelming, underreported, and completely indispensable human feet, and thought, “That’s interesting.”

  When I told my agent, Phyllis Westberg, that I had decided to write about feet, her response was not what you would call encouraging. Phyllis and I have lived through more than twenty books together, so I take seriously her view of authoring which is that if you can’t put it on paper, it isn’t real. And when she says paper, that’s what she means—computer screens don’t count. So I started to put it on paper, and four months later, I had two chapters and Phyllis said, “Who knew feet could be this interesting.”

  Actually, I did.

  And so, it turned out, did the authors of the Old and New Testaments, Leonardo da Vinci, Ben Franklin, Sigmund Freud, and virtually every single twentieth century anthropologist who wandered through Africa, Asia, and Europe in search of the first primate to stand up on two legs.

  The only body part completely exclusive to human beings is the chin (more about that later on). Everything else—eyes, ears, nose, heart, lungs, liver, arms, and legs—can be found elsewhere in the animal kingdom. That includes our hand with its famous opposable thumb. Apes, giant pandas, raccoons, and opossums also have an opposable thumb; koalas have not one, but two opposable thumbs on their front paws (the back paws have only one).

  Koala hand with two thumbs (left) vs. foot with one thumb (right).

  But like the chin, the homely foot with its adducted big toe, firm arch, and plantigrade sole, d
ifferent in design from every other foot and hoof on earth, is unique and much to our advantage, powering our movement and, throughout history, enabling our cultural, political, and scientific development.

  This was not always a popular idea. As my editor Leslie Hodgkins observes, our insistence on the evolutionary primacy of the brain said (and says) much about how we humans see ourselves. Our brain seems to us the thing that separates us from the herd on Noah’s Ark while our body ties us to the rest of the world’s inhabitants, and our foot, lowest of the low, binds us to the earth, the ground cursed with thorns and thistles because Eve ate that apple. Yes, we speculate that this or that animal has an almost-human brain. But we don’t believe it for a minute, just as we don’t believe that intelligence is so random that if—as the classic anecdote proposes—we put a million monkeys in a room with a million typewriters and leave them there long enough one of them will eventually type out the complete works of Shakespeare.

  I write about food and health and medicine, which means I usually work surrounded by stacks of medical books, journals, and papers held in place by my trusty Harrison’s Principles of Internal Medicine, one of the world’s most erudite paperweights.

  This time there were also history books to tell me how a clubfoot was one birth defect not considered justification for infanticide. There were art books with pictures of paintings and sculpture to show our fascination with a perfectly arched foot. There were nutrition texts to explain the relationship between protein, purines, and gout, the world’s worst pain in the toe. There was psychiatry (and carefully selected pornography) to illustrate the sexual power of the fragrant foot.

  There were biographical dictionaries to track a cast of characters ranging from Greek philosophers to Arab physicians, British poets, and American statesmen, all of whom had more than a word to say about our lower extremity. Where they are available—not all of them are—I have tacked a birth and death date onto the name of every important historical player in this story (living persons are entitled to their privacy) because knowing when they lived adds context to their actions. On occasion, I have included middle names. “Charles Robert Darwin” just sounds so much more friendly and accessible than plain “Charles Darwin.” And you are free to make what you will of the fact that the great French essayist Michel Eyquem de Montaigne dropped what looks like a middle name, but is actually his father’s family name, preferring to be known instead as Michel de Montaigne, Michael of the Chateau Montaigne, the place where he was born and the property he inherited in the town now known as Saint-Michel-de-Montaigne.

  There were also two Bibles replete with references to the foot, most of them euphemisms for other body parts; Bartlett’s Familiar Quotations as back-up; and the infinite Internet that grants access to everything from the staid old/new Encyclopaedia Britannica to a map of the town in Hanover County, Virginia, U.S.A., once nastily named with the detestable N-word.

  Finally, there was my own particular pleasure, etymology. The linear ancestor of English is Old- or Anglo-Saxon English that, like Dutch and the Scandinavian languages, is an offshoot of German. But our current American English dictionary also includes words bequeathed to us by other languages, especially our scientific vocabulary, much of which dates to a time when Latin was the language of higher learning across the Western world. Throughout this book, when I use one of these words, I have attached its derivation, which sometimes comes as a surprise. Did you know, for example, that Amazon, the name for those ladies purported to have sliced off one breast so as to be able to draw a bow more efficiently across the chest, descends not from the relatively familiar Greek a- meaning without and mazos meaning breast, but from the much less well-known Persian hamaz-an that translates roughly as fighting together as one?

  Finding such gems is exciting. Wanting to share them is why writers write. Being able to do so in a way that has real, not virtual, weight, is why we write books.

  In 1897, when James Ross Clemens, cousin of Samuel Langhorne Clemens, a.k.a. Mark Twain, died, reporters confused the two and ended up at the door of the more famous Clemens in search of a story only to be told, “The reports of my death are greatly exaggerated.” You could say the same thing about printed books, the real ones with paper pages. Those of us who have made them our working life are used to hearing about their demise. In fact, we often swear the first such report surfaced about 15 minutes after Johann Gutenberg ran the first book, a Latin-language Bible, off his newly invented movable-type press and put it on sale in March 1455.

  But we book people are a stubborn lot. Thanks to publishers like Erika Goldman of the Bellevue Literary Press, who maintain a serious, old-fashioned (in a good way) attention to books, and editors like Leslie Hodgkins, who know before we do where we want our stories to go, we and our books are still here.

  As every publisher, and editor, and writer knows, we do not build our books alone.

  In this case, LaRay Brown of the New York City Health and Hospitals Corporation; Thomas Blanck, Abraham Chachoua, Kathryn Coichetti-Mazzeo, Doris Farrelly, Susan Firestone, Kimberly Glassman, Maureen FitzPatrick, Leora Lowenthal, Robert Press, Raymonda Rastegar, Mel Rosenfeld, Nina Setia, Sandro Sherrod, and Maxine Simon at NYU Langone Medical Center; and Alex Bekker of the University of Medicine and Dentistry of New Jersey-Medical School offered valuable insight into the work of three extraordinary institutions. Rafael Tamargo of Johns Hopkins Hospital and Duncan MacRae, managing editor of Neurosurgery, eased the path to permission to reprint the wonderful pictures of Michelangelo’s painting of the human brain in the head of God on the ceiling of the Sistine Chapel (yes, Michelangelo, like Leonardo, had something important to say—show—about the human foot). A. Barton Hinkle of the Richmond Times-Dispatch added details to the story of flat feet and southern town names. Jerry A. Cohen and Scott Groudine of the American Society of Anesthesiologists guided me through a project I followed while writing this book; one day, that, too, may build a book.

  Minna Elias walked me through the world of godly feet, ancient and modern. Peter Sass read the material linking our feet and our psyche; Maria DeVal, for clubfoot and Lord Byron. Ellen Imbimbo gave her cool appraisal of philosophy as it sometimes relates to the foot. Louise Dankberg, Carol Greitzer, Linda Hoffman, Barbara Kloberdanz, and Trudy Mason were willing to talk politics whenever I needed to escape the computer. Karen Gormandy performed her usual magic with agent-y details. Kate McKay copy-edited out my typos, and Joe Gannon created the pleasing pages on which you are reading this. Each of these people had a hand in bringing Leonardo’s Foot to life.

  —Carol Ann Rinzler

  1

  DESTINY

  “Anatomy is destiny.”

  Sigmund Freud, “On the Universal Tendency to Debasement in the Sphere of Love” (1912)

  THERE ARE 206 BONES in the adult human body. When you put down this book, push back your chair, and stand up, you will be standing on fifty-two of them: your two feet.

  Like virtually all creatures on earth, human beings are bilaterally symmetrical, with a relatively long, sometimes skinny central body to which limbs are attached in pairs, one of the pair on either side. Even centipedes, which may have an odd number of pairs of legs, always have an even number of legs. The starfish and their relatives appear to be the only multicell creatures with an odd number of limbs, but even their limbs are evenly placed, this time around a circular body, an arrangement known as radial symmetry.

  What makes us different is that unlike virtually all the others, we are bipeds. We naturally and consistently stand and move on two feet rather than four or eight or any other multiple of two. We share our bilateralism with practically everyone, but the only other bipeds are two distinct groups of mammals, the macropods—“big footed” kangaroos and wallabies—and the very small-footed kangaroo mice, jumping rodents native to the southwestern United States. Birds are also bipeds, but as avian anatomists know, birds hop on what looks like two feet but is actually comparable to our toes; the “heel” of a bird’s f
oot is part of a toe; the thin piece just above that corresponds to the sole of the human foot. Theoretically, all of us can walk, run, jump, and jog, although the last—a compromise between walking and running—is pretty much the province of humans.

  Every member of the human clan owes his or her two-foot stance first to the prehistoric sea creatures who developed fins strong enough to enable them to crawl up the banks of the local watering hole and become land animals; then to Eduibamus cursoris, whom the Carnegie Museum of Natural History (Pittsburgh) calls the world’s oldest known biped reptile and whose 200,000,000 year old, slightly more than 10-inch fossil was discovered at a German quarry in 2000; followed by some dinosaurs; and finally to those birds who stood up on two legs and started to move by putting one foot in front of the other. And let’s not forget the lucky confluence of geography, climate, and biological selection that contributed to the foot on which we stand today.

  Leonardo da Vinci (1452–1519), no slouch himself at anatomical mechanics, described our foot as “a masterpiece of engineering and a work of art.” His famous drawing, The Vitruvian Man, lays out perfect standards for the ideal human male figure from head to, yes, the toes attached to a foot, which ideally should measure one-sixth the height of the body.

  The measurements of the Vitruvian Man are based on the writings of Vitruvius (Marcus Vitruvius Pollio), the first-century Roman architect, engineer, and author of the classic 10-book treatise De Architectura (c. 20 BCE).

  Vitruvius’ passion was proportion, which he defined as “a correspondence among the measures of the members of an entire work, and of the whole to a certain part selected as standard.” Vitruvius selected as the standards for the human male the height of a man or the height of the face. In a passage in Book 3, he wrote that “the human body is so designed by nature that the face, from the chin to the top of the forehead and the lowest roots of the hair, is a tenth part of the whole height; the open hand from the wrist to the tip of the middle finger is just the same; the head from the chin to the crown is an eighth, and with the neck and shoulder from the top of the breast to the lowest roots of the hair is a sixth; from the middle of the breast to the summit of the crown is a fourth. If we take the height of the face itself, the distance from the bottom of the chin to the underside of the nostrils is one third of it; the nose from the underside of the nostrils to a line between the eyebrows is the same; from there to the lowest roots of the hair is also a third.”