[2] He grew up with firm morals and responsibilities, being the son of a distinguished and wealthy surgeon who was at one time president of the French Academy of Surgery.

[2] He had two brothers and two sisters and his family spent time travelling between their homes by the seaside, on the mountains and in Paris, in pursuit of sports and arts.

He survived the attack on Mers-el-Kébir as physician-in-chief on the destroyer Mogador, which was bombed and eventually sunk off the coast of North Africa in the Scuttling of the French fleet in Toulon.

[1] He headed General George Patton's 3rd American army's surgical team across France and into Germany and by "alternately manipulating scalpels and grenades", contributed to the efforts of the French resistance to liberate Paris.

[3] After the war, Küss made innovations in urology at the Cochin Hospital, in particular in urinary drainage and vascular reconstructions in transplant cases.

He developed the Boari-Küss method for elongating the ureter and contributed to the elaboration of placing a donor kidney into the extraperitoneal space or iliac fossa,[2] a technique that has continued into the 21st century.

[4] Küss, together with Charles Dubost and Marceau Servelle, was involved in the first human-to-human extraperitoneal kidney transplant procedure on 12 January 1951.

[7] Küss, along with assistant surgeon Jacque Poisson, performed a cross-species procedure, transplanting two pig kidneys into one patient.

[1] Küss established several urology departments at the Paris hospitals, became General Secretary and in 1952 took up presidency for the Société Internationale d'Urologie, where he remained so until 1985.

[2] He was brought up with a deep interest in art and acquainted with eminent Parisian artists of the time including Raoul Dufy.

He added to his father's antique and contemporary art collections, subsequently exhibiting them near his second home at the seaside village of Honfleur.

One part of his collection that including work by Henri Toulouse-Lautrec, Pierre-Auguste Renoir and Claude Monet, sold for more than four million Euros.