[Osteoporosis prevention initiated with peripheral quantitative computerized tomography. Thin-layer and multi-layer...

Area of Science:

• Bone Metabolism and Osteoporosis Research
• Gerontology and Geriatric Medicine
• Radiology and Imaging

Background:

• Postmenopausal osteoporosis is a significant health concern, characterized by bone mass reduction.
• Current risk factors for postmenopausal osteoporosis are insufficient for predicting individual bone loss rates.
• Early identification of rapid bone loss is crucial for timely intervention.

Purpose of the Study:

• To investigate the rate of bone loss in different bone compartments in postmenopausal women.
• To identify predictors of rapid bone loss beyond general risk factors.
• To assess the feasibility of early screening for osteoporosis risk.

Main Methods:

• Prospective study of 70 healthy postmenopausal women over two years.
• Bone mass measurement using peripheral quantitative computed tomography (pQCT).
• Separate analysis of trabecular and compact bone in the radius and tibia.

Main Results:

• Trabecular bone in the radius and tibia showed significant yearly loss (3.0% and 1.5%, respectively).
• A bimodal distribution of bone loss rates was observed, identifying 'fast' and 'slow' losers.
• Women with initially lower trabecular bone mass were predominantly fast losers, losing up to 10 mg/cm³ annually.

Conclusions:

• Precise measurement of purely trabecular bone mass is essential for identifying individuals at risk of rapid bone loss.
• Early identification (within six months) of fast bone losers is possible through trabecular bone mass measurement.
• This method offers effective and economical monitoring for osteoporosis prevention.