1. Hip fractures in young patients: Is this early osteoporosis?

   • Scott D. Boden
   • Panos Labropoulos
   • Richard Saunders

   Clinical Investigations Pages: 65 - 72

2. Intestinal calcium absorption during hyperinsulinemic euglycemic glucose clamp in healthy humans

   • Gerhard Rümenapf
   • Johanna Schmidtler
   • Paul Otto Schwille

   Clinical Investigations Pages: 73 - 79

3. Long-term physical exercise retards trabecular bone loss in lumbar vertebrae of aging female mice

   • Michael Silbermann
   • Batia Bar-Shira-Maymon
   • Klaus von der Mark

   Laboratory Investigations Pages: 80 - 93

4. ²²⁴Ra-induced osteopenia in male CBA mice

   • M. W. Robins

   Laboratory Investigations Pages: 94 - 100

5. Nondestructive measurement of bone mineral in femurs from ovariectomized rats

   • Donald B. Kimmel
   • Thomas J. Wronski

   Laboratory Investigations Pages: 101 - 110

6. Elongation of fetal chick long bonein vitro is formed by a mitogenic activity preparation from porcine bone

   • K. G. Kukoschke
   • G. Delling
   • H. Mayer

   Laboratory Investigations Pages: 111 - 115

7. Membrane-associated crystallization of calcium oxalatein vitro

   • Saeed R. Khan
   • Paula N. Shevock
   • Raymond L. Hackett

   Laboratory Investigations Pages: 116 - 120

8. Kinetics of dissolution of calcium hydroxyapatite powder. III: pH and sample conditioning effects

   • J. M. Thomann
   • J. C. Voegel
   • Ph. Gramain

   Laboratory Investigations Pages: 121 - 129

9. Absorption of intranasal salmon calcitonin in normal subjects and hypogonadic men

   • K. K. Pun
   • W. L. Chan
   • C. Wang

   Comment Pages: 130 - 132

10. Announcements

    Announcement Pages: 133 - 133

11. Selected Abstracts from the Seventh International Workshop on Bone Densitometry

    • Organizers, Selected Abstracts from the Seventh Onternational Workshop on Bone Densitometry

    Abstract Pages: 135 - 146