1. Muscle strength and skeletal competence: Implications for early prophylaxis

   • Rivka Black Sandler

   Editorial Pages: 281 - 283

2. Bone histomorphometry: Proposed system for standardization of nomenclature, symbols, and units

   • A. M. Parfitt

   OriginalPaper Pages: 284 - 286

3. Precision of dual-photon absorptiometry

   • Clanton C. Shipp
   • Paul S. Berger
   • Bess Dawson-Hughes

   Clinical Investigations Pages: 287 - 292

4. Changes in incidence and prevalence of vertebral fractures during 30 years

   • Urban Bengnér
   • Olof Johnell
   • Inga Redlund-Jonell

   Clinical Investigations Pages: 293 - 296

5. Osteodystrophy of diabetics in chronic dialysis: A histomorphometric study

   • J. Aubia
   • S. Serrano
   • J. Masramon

   Clinical Investigations Pages: 297 - 301

6. The effects of parathyroid hormone or 1,25-dihydroxyvitamin D₃ on monocyte-osteoclast fusion

   • Anna Teti
   • Gerhard Volleth
   • Alberta Zambonin Zallone

   Laboratory Investigations Pages: 302 - 308

7. Ultrasonic measurement of immobilization-induced osteopenia: An experimental study in sheep

   • Clinton T. Rubin
   • George W. Pratt Jr.
   • Robert Poss

   Laboratory Investigations Pages: 309 - 312

8. Biochemical differences between dystrophic calcification of cross-linked collagen implants and mineralization during bone induction

   • Marcel E. Nimni
   • Sol Bernick
   • Basil S. Strates

   Laboratory Investigations Pages: 313 - 320

9. Reconstituted bovine skin collagen enhances healing of bone wounds in the rat calvaria

   • Douglas A. Deporter
   • Norio Komori
   • Karen Parisien

   Laboratory Investigations Pages: 321 - 325

10. The influence of citrate on the duodenal absorption of calcium in the rat

    • Gerhard Rümenapf
    • Paul Otto Schwille

    Laboratory Investigations Pages: 326 - 330

11. Interaction of cadmium ions with calcium hydroxyapatite crystals: a possible mechanism contributing to the pathogenesis of cadmium-induced bone diseases

    • Jørgen Christoffersen
    • Margaret R. Christoffersen
    • Philippe Grandjean

    Laboratory Investigations Pages: 331 - 339

12. Announcements

    Announcement Pages: 340 - 340