Antoine Louis was an 18th-century French surgeon and physiologist.
Louis is credited with designing a prototype of the guillotine. For a period of time after its invention, the guillotine was called a louisette. However, it was later named after French physician Joseph Ignace Guillotin (1738–1814), whose advocacy of a more humane method of capital punishment prompted the guillotine's design.
The "angle of Louis" is another name for the sternal angle, which is the point of junction between the manubrium and the body of the sternum.
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