• Arch Orthop Trauma Surg · Jan 1990

    Comparative Study

    Calcitonin, estradiol, and hydroxyproline as parameters in the early diagnosis of involutional osteoporosis. The importance of the "second calcitonin phenomenon".

    • L Ferrández, M Martín, and M Fernández.
    • Department of Traumatology and Orthopedic Surgery, Hospital Clínico Universitario, Salamanca, Spain.
    • Arch Orthop Trauma Surg. 1990 Jan 1; 109 (4): 181-5.

    AbstractBone metabolism was studied in a group of 92 subjects. A greater age-related decrease in calcitonin and estradiol concentrations exists in women than in men, though this difference was not significant; it was significant, however, when the values of the three different groups of women were compared. We present what we have called the second calcitonin phenomenon, that is, a highly significant difference in women between a second basal calcitonin level and the primary admission value. In the calcium infusion test, men considered to be osteoporotic showed a deceleration in the rapid loss of reserve calcitonin deposits.

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