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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Ignaz Semmelweis


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.

Ignaz Semmelweis, MD (1818- 1865). Born in Budapest as Ign?c F?l?p Semmelweis, he started his university studies as a lawyer, but changed to Medicine and in 1844, at the age of 26, attained his MD degree. in 1847 he was appointed as an assistant in Obstetrics, almost at the same time of the death of a friend (Kolletschka, a pathologist) who died of what appeared to be "puerperal fever", also known as "childbed fever" after being accidentally stabbed by a knife during the autopsy of a female who had died of that disease. Semmelweis reasoned that the disease somehow was transmitted via the wound and started a crusade to have surgeons and students clean their hands with a carbolized solution before examining a healthy pregnant woman.

Although the obstetric wards under his care reduced the rate of this disease to almost nothing, Semmelweis endured criticism from his teachers, colleagues, and peers, and he did not make any friends by calling "murderers" those who did not follow his ideas.  murderers".  An excerpt of a letter to one of this detractors reads: "I denounce you before God and the world as a murderer and the history of puerperal fever will not do you an injustice when for the service of having been the first to oppose my life-saving technique it perpetuates your name as a medical Nero". He did not publish his findings until later in life, and then received even more criticism.

In 1865 was committed to an mental asylum only to die a few days later. He was only 47 years old. The same year he died Joseph Lister performed the first operations using antiseptic technique.


Original image courtesy of
Images from the History of Medicine.

Sources:
1. NEWSOM S." PIONEERS IN INFECTION CONTROL - SEMMELWEIS,IGNAZ,PHILIPP". The Journal of hospital infection. 1993-03-01;23:175-187.
2. Ellis, H. (2008). Ignaz Semmelweis: tragic pioneer in the prevention of puerperal sepsis. British Journal Of Hospital Medicine (London, England: 2005), 69(6), 358 
3
. " A Corner of History: Ignaz Philipp Semmelweis" Wynder, EL  Prev Med 3" (4) Dec 1974, 574-580
4. "Ignaz Semmeweis; a hand-washing pioneer" P. Rangapa JAPI May 2010 58:328
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