====== 1984 ======

[[1983]]-[[1985]]

[[Papile-Burstein classification]] was adapted in 1984 for [[ultrasound]] as the equipment is portable and can be frequently repeated
((Bowerman RA, Donn SM, Silver TM, Jaffe MH. [[Natural history]] of neonatal [[periventricular/intraventricular hemorrhage]] and its [[complication]]s: sonographic [[observation]]s. AJR Am J Roentgenol. 1984 Nov;143(5):1041-52. doi: 10.2214/ajr.143.5.1041. PMID: 6385669.)).
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In [[1958]], four visionary Swiss surgeons shared a common goal: to conduct research into bone healing within a structured, coordinated study group. It was effectively the birth of the [[AO]] (Arbeitsgemeinschaft für Osteosynthesefragen—literally translated, “working group for bone fusion issues”). 

Year over year, its scope has expanded to keep pace with rapid developments in musculoskeletal surgery and patient care, and in [[1984]] the AO Foundation was formally established.

see [[AOSpine]].
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The first description of transposition for treating [[hemifacial spasm]] was that by Fukushima
((Fukushima T: [Results of posterior fossa microvascular decompression in the treatment of hemifacial spasm]. Facial N Res Jpn 4: 9– 14, 1984.))