1977

1977

1976-1978

The introduction of microsurgical techniques in 1977 and 1978 was introduced for spinal surgery by the work of the famous neurosurgeon Mahmut Gazi Yasargil 1) and Wolfhard Caspar 2) and so-called microdiscectomy was introduced and represented an important evolution in lumbar disc surgery. Williams has also described “microdiscectomy” in 1978 3).


Kendall and Logue first published a description of a spinal vascular malformation in 1977 with the novel recognition that these were actually not intradural sAVMs, but rather dural-based lesions with drainage into the previously not yet described coronal plexus of veins.


In 1977, Twist drill craniotomy for chronic subdural hematoma was introduced. 4).


In 1977 Yamura and Makino coined the term “syndrome of the sunken skin flap” to describe the neurological symptoms due to a craniectomy defect 5).


The discovery of aciclovir was announced in 1977.


The first major Cerebral Arteriovenous Malformation Grading scheme developed by Luessenhop and Gennarelli in 1977 6) formulated a grade from I to IV based on the number of feeding arteries for which it is standardized nomenclature.


1)
Yasargil MG. Microsurgical operation for herniated disc. In: Wüllenweber R, Brock M, Hamer J, et al., editors. Lumbar disc adult hydrocephalus. Berlin: Springer-Verlag; 1977. p. 81.
2)
Caspar W, Campbell B, Barbier DD, Kretschmmer R, Gotfried Y. The Caspar microsurgical discectomy and comparison with a conventional standard lumbar disc procedure. Neurosurgery. 1991;28:78–86. discussion 86-87.
3)
Williams RW. Microlumbar discectomy: a conservative surgical approach to the virgin herniated lumbar disc. Spine (Phila Pa 1976) 1978;3:175–82.
4)
Lee KS. How to Treat Chronic Subdural Hematoma? Past and Now. J Korean Neurosurg Soc. 2019 Mar;62(2):144-152. doi: 10.3340/jkns.2018.0156. Epub 2018 Nov 30. PubMed PMID: 30486622; PubMed Central PMCID: PMC6411568.
5)
Yamaura A, Makino H. Neurological deficits in the presence of the sinking skin flap following decompressive craniectomy. (Tokyo) Neurol Med Chir 1977;17:43-53.
6)
Luessenhop AJ, Gennarelli TA. Anatomical grading of supratentorial arteriovenous malformations for determining operability. Neurosurgery 1977;1(1): 30–5.
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