Józef Polikarp Brudzinski (26 January 1874, Bolewo – 18 December 1917, Warsaw) was a Polish pediatrician born in the village of Bolewo (now in Mlawa County).
He studied medicine in Tartu and Moscow, and in 1897 moved to Kraków, where he trained in pediatrics.
Later, he worked in Graz under Theodor Escherich (1867-1911), and in Paris with Doctors Jacques-Joseph Grancher (1843-1907), Antoine Marfan (1858-1942 ) and Victor Henri Hutinel (1849-1933).
In 1903 he practiced medicine at the Anne-Marie Kinderhospital in Lódz, relocating in 1910 to Warsaw, where he designed a children's hospital with financial assistance from philanthropist Sophie Szlenker.
He was a catalyst in the re-establishment of a Polish university in Warsaw, where in 1915, he became rector.
In 1908 he founded the first Polish journal of pediatrics, titled Przeglad Pediatryczny.
Brudzinski is remembered for his work involving prophylaxis of infectious diseases in children, as well as studies of neurological indications associated with meningitis.
Today, his name is lent to four eponymous medical signs associated with reflexes observed in meningitis.
Brudzinski's neck sign: With the patient lying on his back and the neck is bent forward, reflective flexion of the knees take place.
Brudzinski's symphyseal sign: Pressure over symphysis pubis leads to knee, hip flexion and leg abduction.
Brudzinski's cheek phenomenon: Pressure beneath the zygomatic bone leads to flexion of the forearm.
Brudzinski's reflex: Passive flexion of one knee into the abdomen leads to involuntary flexion in the opposite leg, and stretching of a limb that was flexed leads to contralateral extension.He died on December 18, 1917 at only 43 years of age due to Nephrotic syndrome.