1. Why are the principles of physics and anatomy important in treating osteoporosis?

   • C. A. L. Bassett

   Editorial Pages: 515 - 516

2. C. Andrew L. Bassett, M.D.

   • K. J. McLeod

   In Memoriam Pages: 517 - 517

3. Vitamin D supplementation in the elderly: Review of safety and effectiveness of different regimes

   • P. M. Byrne
   • R. Freaney
   • M. J. McKenna

   Clinical Investigations Pages: 518 - 520

4. A longitudinal assessment of bone loss in women with levothyroxine-suppressed benign thyroid disease and thyroid cancer

   • M. T. McDermott
   • J. J. Perloff
   • G. S. Kidd

   Clinical Investigations Pages: 521 - 525

5. Quantitative ultrasound assessment of bone in patients with primary hyperparathyroidism

   • S. Minisola
   • R. Rosso
   • G. Mazzuoli

   Clinical Investigations Pages: 526 - 528

6. Phosphorus-31 in vivo magnetic resonance spectroscopy of bone fails to diagnose osteoporosis

   • S. Confort-Gouny
   • J. P. Mattéi
   • P. J. Cozzone

   Clinical Investigations Pages: 529 - 532

7. Calcium tracer kinetics show decreased irreversible flow to bone in glucocorticoid treated patients

   • R. E. Goans
   • G. H. Weiss
   • A. L. Yergey

   Clinical Investigations Pages: 533 - 535

8. Incidence of proximal femur fracture in an urbanized community in Saudi Arabia

   • A. R. Al-Nuaim
   • M. Kremli
   • S. Sandkgi

   Clinical Investigations Pages: 536 - 538

9. Prevention of postmenopausal bone loss by rectal calcitonin

   • J. -Y. Reginster
   • I. Jupsin
   • P. Franchimont

   Clinical Investigations Pages: 539 - 542

10. An EPR study of intact and powdered human tooth enamel dried at 400°C

    • F. Callens
    • P. Moens
    • R. Verbeeck

    Laboratory Investigations Pages: 543 - 548

11. Recombinant bone morphogenetic protein-2 enhances bone healing, guided by osteopromotive e-PTFE membranes: An experimental study in rats

    • A. Linde
    • E. Hedner

    Laboratory Investigations Pages: 549 - 553

12. The rate of osteoclastic destruction of calcified tissues is inversely proportional to mineral density

    • S. J. Jones
    • M. Arora
    • A. Boyde

    Laboratory Investigations Pages: 554 - 558

13. Conformational changes of bovine bone osteonectin induced by interaction with calcium

    • H. Takita
    • Y. Kuboki

    Laboratory Investigations Pages: 559 - 565

14. An ultrastructural evaluation of the effects of cysteine-proteinase inhibitors on osteoclastic resorptive functions

    • K. Debari
    • T. Sasaki
    • B. R. Rifkin

    Laboratory Investigations Pages: 566 - 570

15. Dexamethasone enhances the effects of parathyroid hormone on human periodontal ligament cells in vitro

    • R. M. Nohutcu
    • M. J. Somerman
    • L. K. McCauley

    Laboratory Investigations Pages: 571 - 577

16. Purification and immunochemistry of a soluble matrix protein of the chicken eggshell (ovocleidin 17)

    • M. T. Hincke
    • C. P. W. Tsang
    • R. Narbaitz

    Laboratory Investigations Pages: 578 - 583

17. Ototoxicity associated with intravenous bisphosphonate administration

    • I. R. Reid
    • D. A. J. Mills
    • D. J. Wattie

    Comment Pages: 584 - 585

18. Fixed ratio between radial cortical volume and density measured by peripheral quantitative computed tomography (pQCT) regardless of age and sex

    • Y. Fujii
    • A. Miyauchi
    • T. Fujita

    Letters to the Editor Pages: 586 - 588

19. Comments on “Cyclosporin does not affect the absolute rate of cortical bone resportion at the organ level in the growing rat”

    • S. Epstein
    • W. S. S. Jee
    • Michael S. Wolfe

    Letters to the Editor Pages: 588 - 592

20. Announcements

    Announcement Pages: 606 - 606

21. Errata

    Erratum Pages: 607 - 607

22. Errata

    Erratum Pages: 607 - 607