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Titolo:
Calcaneus ultrasound measurements in a convenience sample of healthy youth
Autore:
Sawyer, A; Moore, S; Fielding, KT; Nix, DA; Kiratli, J; Bachrach, LK;
Indirizzi:
Boston Childrens Hosp, Dept Orthoped, Boston, MA USA Boston Childrens Hosp Boston MA USA Hosp, Dept Orthoped, Boston, MA USA Stanford Univ, Sch Med, Ctr Med, Div Pediat Endocrinol, Stanford, CA 94305USA Stanford Univ Stanford CA USA 94305 iat Endocrinol, Stanford, CA 94305USA Dept Pediat, Stanford, CA USA Dept Pediat Stanford CA USADept Pediat, Stanford, CA USA Vet Affairs Palo Alto Hlth Care Syst, Cord Injury Ctr, Palo Alto, CA USA Vet Affairs Palo Alto Hlth Care Syst Palo Alto CA USA Palo Alto, CA USA
Titolo Testata:
JOURNAL OF CLINICAL DENSITOMETRY
fascicolo: 2, volume: 4, anno: 2001,
pagine: 111 - 120
SICI:
1094-6950(200122)4:2<111:CUMIAC>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
BONE-MINERAL DENSITY; X-RAY ABSORPTIOMETRY; QUANTITATIVE ULTRASOUND; SEXUAL-MATURATION; PHYSICAL-ACTIVITY; HIP FRACTURE; CHILDREN; DENSITOMETRY; ACQUISITION; ADOLESCENTS;
Keywords:
bone ultrasound; pediatrics; bone mineral acquisition; calcaneus ultrasound;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
38
Recensione:
Indirizzi per estratti:
Indirizzo: Bachrach, LK Stanford Univ, Sch Med, Ctr Med, Div Pediat Endocrinol, Rm S302,300 Pasteur Dr, Stanford, CA 94305 USA Stanford Univ Rm S302,300 PasteurDr Stanford CA USA 94305 SA
Citazione:
A. Sawyer et al., "Calcaneus ultrasound measurements in a convenience sample of healthy youth", J CLIN DENS, 4(2), 2001, pp. 111-120

Abstract

We examined age-related changes in quantitative ultrasound of the calcaneus in 311 healthy males and females ages 6.6-20 yr using the Lunar Achilles ultrasound device. This equipment has been adapted for pediatric use with the provision of shims designed to properly position smaller feet relative to the transducers. Broadband ultrasound attenuation (BUA) (decibels/megahertz), speed of sound (SOS) (meters/second), and stiffness index (SI) (percent) increased across the age range until a plateau was reached at 16-18 yr. BUA increased by 40%, SOS by 4%, and SI by 80% across this age range. Therewas no gender difference in age related gains. Age, weight, height, and hours of weight-bearing physical activity were all significantly associated with BUA, SOS, and SI. After controlling for age and weight, hours of weight-bearing physical activity showed little to no additional effect on these parameters. Short-term in vivo precision using this device was similar in children to that observed in adults in our laboratory; coefficients of variation for between-day measurements were 1.8, 0.6, and 3.2% for BUA, SOS, and SI, respectively. These data support the feasibility of using the Lunar Achilles in evaluating pediatric bone mass. The ability of this technique to discriminate between osteopenic and normal children remains to be determined.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/03/20 alle ore 19:36:01