Myatonia congenita of Oppenheim, also called amyotonia congenita, is not now considered as rare as it was formerly thought to be, because of its more widespread recognition. Reuben1 reviewed the literature in 1917 and found reports of 136 cases. When Haushalter2 reviewed it again in 1920, he found reports of 155 cases.
A point that has been mentioned in connection with this particular disease by Holt and Howland,3 must be kept in mind; namely, that when a disease is first discovered, only the most striking and complete cases are recognized; later, incomplete syndromes are identified. It is not my intention to review the literature or to discuss in detail all phases of the disease, as this has been ably done, but to present a case of a partial syndrome with a unique contracture, and to show the profound consequences that result from this absence or nonfunction of
NIELSEN JM. MYATONIA CONGENITA OF OPPENHEIMREPORT OF A UNIQUE CASE. Am J Dis Child. 1928;35(1):82–86. doi:10.1001/archpedi.1928.01920190089013
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