Medical Terminology Daily (MTD) is a blog sponsored by Clinical Anatomy Associates, Inc. as a service to the medical community. We post anatomical, medical or surgical terms, their meaning and usage, as well as biographical notes on anatomists, surgeons, and researchers through the ages. Be warned that some of the images used depict human anatomical specimens.

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A Moment in History

Jean-Louis Petit

Jean Louis Petit
(1674 – 1750)

French surgeon and anatomist, Jean Louis Petit was born in Paris in on March 13, 1674.  His family rented an apartment at his house to Alexis Littre (1658 – 1726), a French anatomist. Petit became an apprentice of Littre at seven years of age, helping him in the dissections for his lectures and at an early age became the assistant in charge of the anatomic amphitheater.

Because of Petit’s dedication to anatomy and medicine, in 1690 at the age of sixteen, became a disciple of a famous Paris surgeon, Castel.

In 1692, Petit entered the French army and performed surgery in two military campaigns. By 1693 he started delivering lectures and was accepted as a great surgeon, being invited to the most difficult operations.  In 1700 he was appointed Chief Surgeon of the Military School in Paris and in the same year he received the degree of Master of Surgery from the Faculty of Paris.

In 1715 he was made a member of the Royal Academy of Sciences and an honorary member of the Royal Society of London. He was appointed by the King as the first Director General of the Royal Academy of Surgery when it was founded in 1731.

Petit’s written works are of historical importance.  “Traite des Maladies des Os” ( A Treatise on Bone Diseases);  “Traite des Maladies Chirurgicales et des Operation” (A Treatise on Surgical Diseases and their Operations” This last book was published posthumously in 1774. He also published a monograph on hemorrhage, another on lachrymal fistula, and others.

He was one of the first to perform choIecystotomy and mastoidotomy. His original tourniquet design for amputations saved many in the battlefield and the design of the same surgical instrument today has not changed much since its invention by him.

His name is remembered in the lumbar triangle, also called the "triangle of Petit", and the abdominal hernia that can ensue through that area of weakness, the lumbar hernia or "Petit's hernia".

Sources:
1. “Jean Louis Petit – A Sketch of his Life, Character, and Writings” Hayne, AP San Fran Western Lancet 1875 4: 446-454
2. “Oeuvres compl?tes de Jean-Louis Petit” 1837 Imprimerie de F. Chapoulaud
3. Extraits de l'eloge de Jean-Louis Petit Ius dans Ia seance publique de I' Academie royale de chirurgie du 26 mai 1750” Louis A. Chirurgie 2001: 126 : 475- 81


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Henry Gray F.R.S


This article is part of the series "A Moment in History" where we honor those who have contributed to the growth of medical knowledge in the areas of anatomy, medicine, surgery, and medical research.To search all the articles in this series, click here.

Henry Gray F.R.S. (1827 – 1861). English anatomist, Henry Gray was born in 1827. Not much is known of his early studies. What is known is that on May 6, 1845 Gray was studying as a pupil at St. George’s Hospital in London. At 21 years of age Gray won an award for an anatomical paper on human and comparative anatomy of the eye and its appendages.

In 1850 Henry Gray was appointed as house surgeon to the St. George’s Hospital, and in 1852 he was elected as a Fellow of the Royal Society. He wrote several anatomical papers and in 1852 became a lecturer on Anatomy at the same hospital.

At this time he started work on what would become his legacy to the world. A systematic analysis and treatise on human anatomy that was originally published in 1858, entitled “Anatomy, Descriptive, and Surgical” which was profusely illustrated by Henry Vandyke Carter, M.D.

Unfortunately for the world, Henry Gray was affected by smallpox and died on June 13, 1861 shortly after he was elected as a member of the Royal College of Surgeons. Henry Gray died when he was only 34 years old.

Henry Gray, FRS
Original imagecourtesy of NLM  

Much of the original work of Henry Gray is today in the public domain. Still, the book that he published is still in print, much modified, but with the same educational purpose. The 40th British Edition of “Gray’s Anatomy: The Anatomical Basis of Clinical Practice” was published in November 2008. The American Edition of the same book was published in 1908, long after his death. The 30thAmerican Edition of Gray’s Anatomy was last published in the USA in 1984.

Sources:
1. “Henry Gray and Henry Vandyke Carter: Creators of a Famous Textbook" Roberts, S. J Med Biog 2000 8: 206-212
2. "Henry Gray, Anatomist: An Appreciation" Boland, F Am J Med Sci 1908 1827-1924
3. "The Anatomist: A True Story of Gray’s Anatomy" Hayes, B. Random House PG 2007

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