title: [Preliminary comparison between phalangeal quantitative ultrassonography and bone densitometry for bone mass evaluation in adolescents].
abstract: OBJECTIVE
  To evaluate the association between quantitative ultrasonography at hand phalanges (QUS) and dual energy X-ray absorptiometry (DXA), and between these methods with food intake and history of bone fractures.
  
  
  METHODS
  After two years of follow up of 270 schoolchildren, 10 of them, who showed bone mass below - 2 SD in QUS, were included in the present study. Laboratory results and DXA data were analyzed.
  
  
  RESULTS
  Bone mass evaluated by DXA at L1-L4 ranged from -2.8 to -1.1 SDS, and whole body bone mass, from -2.9 to -1.2 SDS. Three children had history of non-pathological bone fractures. Dietary assessment showed low intake of calcium in 10 cases, of phosphorus in 6, and of vitamin D in 8 cases. There were no differences among the cases of bone mass below-2 SD in any of the three used methods. There was no association between history of bone fractures and food intake, and between these evaluations and bone mass.
  
  
  CONCLUSIONS
  In this small group of schoolchildren there was an association between the methods QUS and DXA. However, there was no association between bone mass and the history of bone fractures, or calcium, phosphorus and vitamin D intake.
authors.affiliation: Laboratório de Crescimento e Composição Corporal, Centro de Investigação em Pediatria, Departamento de Pediatria, Faculdade de Ciências Médicas, Universidade Estadual de Campinas, SP, Brasil.
authors.forename: Stênio Bruno Leal
authors.initials: SB
authors.lastname: Duarte
authors.forename: Wellington Roberto Gomes de
authors.initials: WR
authors.lastname: Carvalho
authors.forename: Ezequiel Moreira
authors.initials: EM
authors.lastname: Gonçalves
authors.forename: Roberto Regis
authors.initials: RR
authors.lastname: Ribeiro
authors.forename: Edson Santos
authors.initials: ES
authors.lastname: Farias
authors.forename: Daniela de Oliveira
authors.initials: Dde O
authors.lastname: Magro
authors.forename: Laís Mariana Ribeiro de
authors.initials: LM
authors.lastname: Oliveira
authors.forename: Gil
authors.initials: G
authors.lastname: Guerra-Júnior
mesh_terms: D015502:Absorptiometry, Photon / Q000379:methods*; D000293:Adolescent; D015519:Bone Density / Q000502:physiology*; D002118:Calcium / Q000172:deficiency; D002648:Child; D005260:Female; D050278:Finger Phalanges / Q000000981:diagnostic imaging* / Q000502:physiology; D005500:Follow-Up Studies; D050723:Fractures, Bone / Q000453:epidemiology; D006801:Humans; D008297:Male; D009752:Nutritional Status / Q000502:physiology*; D010758:Phosphorus / Q000172:deficiency; D011203:Poverty; D018709:Statistics, Nonparametric; D014463:Ultrasonography; D014808:Vitamin D Deficiency; D051598:Whole Body Imaging / Q000379:methods
chemical_list: D010758:Phosphorus; D002118:Calcium