Medical milestones, landmark publications, and notable births and deaths associated with April 6.

Events

1929 — Lorenz Böhler (1885–1973) presented Behandlung der Fersenbeinbrüche at the 53rd meeting of the German Society of Surgery, introducing the radiographic measurement he named the Gelenk-Tuberwinkel. He described a normal angle of 27–33° between the superior calcaneal tuberosity and the line joining the anterior calcaneus to the posterior articular surface, noting that after calcaneal fracture the angle became smaller, disappeared, or became negative. This was the original description of the Böhler angle.

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Births

1861 – Evan O’Neill Kane (1861-1932), American general surgeon; performed auto-appendicectomy on February 15, 1921

1870 – Oskar Vogt (1870-1959), German neurologist; described Vogt-Vogt syndrome (1919)

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Deaths

1863 – William Hallock Park (1863–1939) was an American Immunologist; described Park–Williams Bacillus (PW8 strain, 1894), Park–Williams Fixative (1890), Park–Holt Pasteurised Milk (1903). Park was central to the medical confirmation of Mary Mallon (“Typhoid Mary”), the first recognized healthy carrier of Salmonella typhi in the United States.

1962 – Henri Mondor (1885-1962), French physician; described Mondor disease (1939), and Penile Mondor disease

1963 – Allen Oldfather Whipple (1881-1963), American surgeon; described Whipple procedure (1935) Pancreaticoduodenectomy and Whipple triad (1938)

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Further reading

• Böhler L. Behandlung der Fersenbeinbrüche. Arch Klin Chir. 1929;157:723–732.
• Böhler L. Diagnosis, pathology and treatment of fractures of the os calcis. J Bone Joint Surg 1931; 13: 75-89