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January 1934

CALCIUM AND PHOSPHORUS STUDIES: VI. OBSERVATIONS ON THE TREATMENT OF LATE RICKETS WITH VIOSTEROL BASED ON THE STUDY OF TWENTY-THREE CASES

Author Affiliations

BALTIMORE
From the Harriet Lane Home of the Johns Hopkins Hospital and the Department of Pediatrics of the Johns Hopkins University.

Am J Dis Child. 1934;47(1):61-90. doi:10.1001/archpedi.1934.01960080070006
Abstract

When is rickets to be designated as late rickets? Schmorl1 writes:

By late rickets I understand all cases which come under observation in the later periods of growth (after the end of the fourth year). Under the conception of late rickets are to be included, therefore, not only those cases in which the disease began in the earlier growth periods but never disappeared—persistent rickets—but also those cases in which rickets developed for the first time in the later periods of growth—late rickets in the narrower sense. Strictly speaking, only the rickets which first develops in the later growth periods merits the name of late rickets. If, however, I make the conception of late rickets as broad as I do, it is because of the impossibility in many cases of making a clear separation between persistent rickets and late rickets.

Schmorl, therefore, makes age the sole criterion.

Schmorl selects the

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