Because of the similarity of the clinical pictures and the blood changes in late rickets and in infantile rickets, it has been assumed that the metabolic disturbances are probably identical. The antirachitic treatment so readily successful in infantile rickets, however, seems much less efficient in some cases of late rickets. For this reason a detailed study of the mineral metabolism of such children seemed advisable. The present report is concerned with the mineral metabolism of two children, 12 and 13 years of age, respectively, who presented clinical roentgenologic and chemical evidence of active rickets, and of one child of 12 years who was used as a control. Both of the rachitic children showed definite roentgenologic evidence of healing during the period of study.
SUMMARY OF CASES
A summary of the histories follows:Case 1.—The patient, C. K., a white girl, aged 12 years, was brought to the hospital because of