1984
Papile-Burstein classification was adapted in 1984 for ultrasound as the equipment is portable and can be frequently repeated 1).
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.
The first description of transposition for treating hemifacial spasm was that by Fukushima 2)
1)
Bowerman RA, Donn SM, Silver TM, Jaffe MH. Natural history of neonatal periventricular/intraventricular hemorrhage and its complications: sonographic observations. AJR Am J Roentgenol. 1984 Nov;143(5):1041-52. doi: 10.2214/ajr.143.5.1041. PMID: 6385669.
2)
Fukushima T: [Results of posterior fossa microvascular decompression in the treatment of hemifacial spasm]. Facial N Res Jpn 4: 9– 14, 1984.