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      Ultrasonographic Assessment of Bone Maturity in Newborns

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          Abstract

          Background: Traditionally, the bone maturity at birth has been estimated from the radiological presence and size of the ossified distal femoral epiphysis. This study was conducted in a search for a sonographic tool for the evaluation of neonatal bone maturity. Methods: We examined sonographically 256 neonates within 24 h of birth. Gestational ages ranged from 36 to 42 weeks (mean: 39.4; median: 40). Birth weights ranged from 1,945 to 5,000 g (mean: 3,175; median: 3,180). The distal femoral epiphysis was imaged on the coronal plane sonogram of the distal femur with the knee at 90° flexion and the distal femoral epiphysis maximal height was recorded. The acetabulum was imaged using Graf’s method in the coronal plane image and the acetabular diameter recorded. Results: It was found that plotting the distal femoral epiphysis against neonatal birth weight and gestational age provided a simple method for assessing the bone maturity. According to our study, a neonate can be regarded as bone maturity percentile X when plotting distal femoral epiphysis height or acetabulum diameter against birth weight and gestational age or when averaging the four readings. Conclusions: We suggest performing sonography of the distal femoral epiphysis as a bedside tool for the assessment of skeletal maturity in newborns.

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          Assessment of skeletal maturation in infants: comparison between two methods in hypothyroid patients.

          Conventional skeletal radiography is the standard technique for assessing skeletal age. However, radiography cannot demonstrate cartilage and is therefore of lesser value in infancy when the ossification centres are composed mainly of cartilage. By comparison, US clearly demonstrates cartilage and bone.
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            Author and article information

            Journal
            HRE
            Horm Res Paediatr
            10.1159/issn.1663-2818
            Hormone Research in Paediatrics
            S. Karger AG
            1663-2818
            1663-2826
            2002
            2002
            30 May 2002
            : 57
            : 5-6
            : 180-186
            Affiliations
            aPediatric Orthopedics Unit and bDepartment of Pediatrics, Rambam Medical Center and Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
            Article
            58379 Horm Res 2002;57:180–186
            10.1159/000058379
            12053090
            © 2002 S. Karger AG, Basel

            Copyright: All rights reserved. No part of this publication may be translated into other languages, reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, microcopying, or by any information storage and retrieval system, without permission in writing from the publisher. Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in government regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug. Disclaimer: The statements, opinions and data contained in this publication are solely those of the individual authors and contributors and not of the publishers and the editor(s). The appearance of advertisements or/and product references in the publication is not a warranty, endorsement, or approval of the products or services advertised or of their effectiveness, quality or safety. The publisher and the editor(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements.

            Page count
            Figures: 5, Tables: 3, References: 16, Pages: 7
            Categories
            Original Paper

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