====== 1920 ======

[[1919]]-[[1921]]


[[The Society of Neurological Surgeons]] is formed. 
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[[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]].
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[[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]]
((Scheuermann HW. The classic: kyphosis dorsalis juvenilis. Clin Orthop Relat Res. 1977:5–7)).