Takagi was attached to Tokyo University (where he succeeded Yoshinori Tashiro) in 1918 when he carried out the ground-breaking operation on a cadaver. He had been influenced by the work of Danish surgeon Severin Nordentoft. In 1922, he went to Germany to study the use of x-ray technology there. Following World War II, Takagi's pupil Masaki Watanabe, carried on his work.
- Operative Arthroscopy by John B. McGinty, Stephen S. Burkhart, Robert W. Jackson, Donald H. Johnson, John C. Richmond, p3
- Shoulderdoc.co.uk Lennard Funk, Advances in Shoulder Arthroscopy. Accessed 28 October 2012
- Operative Arthroscopy by John B. McGinty, Stephen S. Burkhart, Robert W. Jackson, Donald H. Johnson, John C. Richmond, p4
- Kozo Nakamura, "Professor Yoshinori Tashiro’s contribution to Orthopedic Surgery", Journal of Orthopedic Science2006 March; 11(2): 115–117. Accessed 28 October 2012