Baudelocque's Diameter
Historical document, translated for reference. It reflects medical knowledge of the 1920s–30s and is not medical advice.
Summary
Baudelocque's diameter, also known as the external conjugate of the pelvis, is a measurement used in obstetrics. It represents the distance between the spinous process of the last lumbar vertebra and the midpoint of the upper edge of the pubic symphysis.
Encyclopedia entry (1928–1936)
BAUDELOCQUE'S DIAMETER (diameter Baudelocquii), or the external conjugate of the pelvis, represents the distance from the spinous process of the last lumbar vertebra to the midpoint of the upper edge of the symphysis. In a normal state, it is equal to 19–20 cm.
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“Baudelocque's Diameter.” Soviet Medical Encyclopedia. English translation of Bolshaya Meditsinskaya Entsiklopediya, 1st ed. (Moscow, 1928–1936), ed. N. A. Semashko. https://sovietmedicalencyclopedia.pages.dev/article/baudelocques-diameter/