Abstract

The aim of this study was to assess site-specific relationship of hand bone mineral density (BMD) with hand size, pinch and grip strength in healthy people aged 19-50 years. A total of 143 healthy volunteers participated in the study (mean age: 34 years). One hundred-six were premenopausal women (mean age: 34 years) and 37 were men (mean age: 34 years). Grip and pinch strength was measured by a Jamar dynamometer (Jamar, Irvington, NY). Second, third and fourth middle phalanx BMD were measured on a MetriScan densitometer (Hayward, CA) and mean value of these three phalanxes were used in the analysis. There was not a significant correlation between hand BMD and grip, pinch strength or hand size in premenopausal women. A significant correlation between hand BMD and grip strength was found in men (right hand; r=0.44, p=0.007, left hand; r=0.33, p=0.05). Hand size was not correlated with hand BMD both in men and in women. The short-term precision for RA was estimated as 0.44%. This is the first report of a site-specific relationship of BMD measured by radiographic absorptiometry with hand size, pinch and grip strength in healthy men and premenopausal women. Our results revealed that there is a moderate correlation between hand-grip strength and hand BMD in men. Hand size does not predict hand BMD both in men and women. Radiographic absorptiometry is a practical and reproducible method to detect bone mineral density of hands and may be a valuable screening tool for osteoporosis.

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