Medical milestones, landmark publications, and notable births and deaths associated with August 23.

Events

1911 – Conrad Ramstedt (1867–1963) performed his early pyloromyotomy for infantile hypertrophic pyloric stenosis in a 7-week-old infant), an operation that became widely adopted as the definitive surgical treatment and later bore his name.

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Births

1768 – Sir Astley Paston Cooper (1768-1841), English surgeon; credited with the first or very early reports of sternoclavicular dislocation; Galleazi fracture; Tillaux Fracture; and the Monteggia fracture

1834 – Hugh Owen Thomas (1834-1891), Welsh Orthopaedic Surgeon. Described the Thomas test (1875) and invented the Thomas knee splint (1865), Thomas collar and Thomas wrench

1873 – Jean Marie Joseph Capgras (1873-1950), French psychiatrist; described Capgras syndrome (1923)

1958 – Robbert Jan de Winter, Dutch cardiologist; described de Winter T Waves (2008)

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Deaths

1849 – Charles Aston Key (1793-1849), English surgeon; described Key-Hodgkin murmur (1827) and published the first description of ossification of the posterior longitudinal ligament of the spine (OPLL) in 1838

1987 – Olga Imerslund (1907-1987), Norwegian paediatrician; described Imerslund-Gräsbeck syndrome (1959)

2021 – Carl-Axel Cedell (1932-2021), Swedish Orthopaedic Surgeon; described the Cedell fracture (1974)

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Further reading

• Taylor S. Pyloric stenosis before and after Ramstedt. Arch Dis Child. 1959 Feb;34(173):20-3.
• Georgoula C, Gardiner M. Pyloric stenosis a 100 years after Ramstedt. Arch Dis Child. 2012 Aug;97(8):741-5.