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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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This is a medical root term that originates from the Greek and means "vessel", as in a "container". The term is commonly misunderstood to mean "artery". The original meanings of the term in early Greek and Roman medicine where multiple. It was Lorenz Heister (1683-1758) who first used the term in its modern meaning. Applications of this root term include:
• Angiology : Study of vessels
• Angioma : Vessel tumor or mass, usually referred to a malformation of knotted vessels. The plural form is "angiomata"
• Angioplasty : Reshaping of a vessel
• Angiitis : Inflammation of a vessel. Note the double "i" in the word. This is the correct form of the term. "Angitis" is not correct!
• Angiogenesis: Creation or generation of vessels
• Neoangiogenesis: The prefix [neo-] means [new], therefore the term means "creation or generation of new vessels"
• Cholangiogram: The prefix [chol-] means "bile", while the suffix [-ogram] means "examination of". A [cholangiogram] is the "examination of a bile vessel"
• Cineangiogram: The prefix [cine-] means "movement", although we use it to mean "movie", while the suffix [-ogram] means "examination of". A [cineangiogram] is the "examination of a vessel in movement"
