[Analysis of the polymorphism of primary myopathies with recessive X-linked inheritance]

The author compared the results of his own observations of primary myopathies with recessive X-chromosome-linked inheritance and the data on this problem published in word literature. Three contrasting groups of those myopathies differing in the localization of the muscle affection were revealed. In the author's opinion, these three groups constitute the core of the clinical polymorphism of the X-linked myopathies.