Edgar Ferdinand Cyriax

Edgar Ferdinand Cyriax (28 February 1874 - 19 February 1955) was an English-Swedish orthopedic physician and physiotherapist from London, United Kingdom. He is known for his work in gymnastics, manipulative treatment, and the first written description of slipping rib syndrome.

Biography
Edgar Ferdinand Cyriax was born in Canonbury, London on 28 February 1874 to Julius Friedrich Theodor Cyriax, from Germany, and Anna Lina Antonia Romana Eckenstein.

In 1899, Cyriax married Annjuta (Anna) Kellgren, daughter of Jonas Henrik Kellgren, Cyriax's mentor. Together they had James Cyriax, Anna Violet Cyriax, and Mary Elizabeth Cyriax.

Cyriax obtained his medical degree at Edinburgh University in 1901, then later graduated from the Kungliga Gymnastika Central Institut in Stockholm, Sweden.

He founded the North American Academy of Manipulative Medicine together with James Mennell. The first written description of slipping rib syndrome was described by Cyriax in 1919, who called it "Cyriax syndrome".

He was 80 years old when he died on February 19, 1955, in London, England. After his death, Cyriax's collection of notes, writings, and journals of gymnastics and manipulative treatment were donated to the Wellcome Library by his family.