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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Andreas Vesalius’ fatal voyage to Jerusalem (3)


By Maurits Biesbrouck, MD. Continued from "Andreas Vesalius’s fatal voyage to Jerusalem (2)".

For the first page of this article, click here.


This important letter was written in Monzon. Barón Fernández points out that it must date from the 24th of January, at the latest, as the monarch then left Monzon, after the sessions of the Cortes of Aragon were over. Vesalius was also in Monzon with the king. The king himself returned in January 1564, to Madrid, arriving there in May. So Vesalius must have received permission for his trip to Jerusalem while in Monzon, situated approximately 240 km from Perpignan, at the French border, while Madrid is 600 km from Perpignan. Presumably Vesalius left Spain directly via Monzon in order to avoid returning to the capital and making the far longer journey to France from Madrid. He definitely cannot have accompanied the king all the way back to the Spanish capital, as he was already in Venice by the 10th of March, as we shall see in the second letter.  

But first some other important remarks. It is hard to imagine that the ultra-Catholic king would have written about Vesalius, to his ambassador, in such terms, if he had been condemned by the Inquisition, let alone, if he himself had had to intervene to protect him from the death penalty. If any of this had been true, we may suppose that the king would have expressed himself very differently. Second, the letter also undermines any claim that there was an ambivalent relationship between Vesalius and his king. Third, Philip II is apparently concerned about Vesalius’s welfare and takes safety measures. This was in no way excessive, as Jean Zuallart describes this journey as one of the most dangerous (10). Fourth, it is striking how Philip II expressly asks his ambassador to urge Vesalius to return swiftly. He will probably also have asked him this in person in Monzon, at the point when he gave him his permission to depart. It is just as if he was not entirely relaxed about the matter.


Title page of Jean Zuallart’s Le tresdevot voyage de Iervsalem (1608)

Letter 2: from Garcihernandez to Philip II

The second letter is the reply of Garcihernandez to the king, on March the 13th. Its translation reads: “Doctor Vesalius arrived here on the tenth of this month, and in order not to waste any time during his journey will, when conditions are favourable, sail from here to Cyprus, and will travel very well equipped, and in company, to Jerusalem. He says that he will travel as swiftly as possible. Ambassador Paulo Tiepolo and a brother of Giovanni Soranzo have very kindly helped him, to comply with [the wish of] Your Majesty. … Venice, the 13th of March 1564.” Signed: “Garcihernandez”.

So, in this letter Garciherandez states, that Vesalius had arrived in Venice on March the 10th, and would be sailing from there to Cyprus, with the support of several people. He stresses that no time will be wasted, and that he has conveyed to Vesalius the king’s wish that he should return as soon as possible.  The theory that Vesalius used the journey, so that he could afterwards travel to Padua, seems to be undermined here, by the reply of Vesalius from Venice - albeit given indirectly -, that he will return to the royal court, as soon as possible. 

Letter 3: also from Garcihernandez to Philip II

Fifteen days later, on March the 28th, ambassador Garcihernandez sent the king another letter, with only a short passage on Vesalius. Here we read in translation:

Five hundred soldiers are being sent to Cyprus and a hundred to Corfu. The ships have remained in port because of the adverse weather, and Doctor Vesalius will be sailing in one of them, as I wrote to your Majesty...”

This short fragment means that Vesalius was still in Venice on March 28th, and that he was only waiting for better weather to embark.


Article continued here: Andreas Vesalius’s fatal voyage to Jerusalem (4).

Sources and author's comments:
10. Jean ZUALLART, Le tresdevot voyage de Iervsalem, auecq les figures des lieux saincts, & plusieurs autres, tirées au naturel, Anvers, Arnovld s’Conincx, 1608 ; see p. 85. First edition in Italian Il devotissimo viaggio di Gierusalemme (Roma, 1595).

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