1920

1919-1921

The Society of Neurological Surgeons is formed.

Tic convulsif (AKA convulsive tic): Geniculate neuralgia combined with hemifacial spasm, usually due to neurovascular compression of both the sensory and motor roots of the facial nerve, most often by AICA. First described by Cushing in 1920.

Scheuermann’s kyphosis, Scheuermann juvenile kyphosis, juvenile kyphosis, Scheuermann disease, juvenile osteochondrosis of the spine, vertebral epiphysitis. Originally dubbed “osteochondritis deformans juvenilis dorsi” by Danish orthopedic surgeon Holger Werfel Scheuermann in 1920 ¹⁾.