Dual energy X-ray absorptiometry of the hand and wrist-a possible technique to assess skeletal maturation: methodology and data in normal youths
| Autor: | Chatelain P, AL Guibal, Pierre Braillon, P Pracros-Deffrenne, JP Pracros, A Serban |
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| Rok vydání: | 2007 |
| Předmět: |
medicine.diagnostic_test
business.industry General Medicine Anatomy Wrist Second metacarpal bone Metacarpal bones medicine.anatomical_structure Skeletal maturation Pediatrics Perinatology and Child Health Bone maturation Projected area Medicine Bone mineral content medicine.bone business Dual-energy X-ray absorptiometry |
| Zdroj: | Acta Paediatrica. 87:924-929 |
| ISSN: | 0803-5253 |
| DOI: | 10.1111/j.1651-2227.1998.tb01759.x |
| Popis: | Ninety five normal Caucasian subjects (51F, 44 M) aged from 2 to 25 y were measured at the hand and wrist level with a small DXA system (pDEXA) in order to obtain the normal values of the bone mineral content (BMC), density (BMD) and projected area (A) of carpal (c) and metacarpal (m) bones. BMDc ranged from 0.065 ± 0.007 g/cm 2 to 0.365 ± 0.035 g/cm 2 in females and 0.425 ± 0.040 g/cm 2 in males. It presented a sharp change of increase rate at 15.5 and 17 y of age in girls and boys, respectively. Ac presented the same kind of evolution as BMDc, but had a larger value dispersion. The second metacarpal bone had the highest BMCm value in 85% of females and 90% of males. The sum of BMCmi or Ami values (i = 1-5) and the projected mean density of the 5 metacarpal bones was well correlated with BMCc, Ac and BMDc, respectively (r > 0.90). A volumetric mineral density, dmi, calculated for each of these bones, approximated to a cylinder, was correlated with age (r > 0.85). |
| Databáze: | OpenAIRE |
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