{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,14]],"date-time":"2026-02-14T03:31:53Z","timestamp":1771039913240,"version":"3.50.1"},"reference-count":61,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2016,8,26]],"date-time":"2016-08-26T00:00:00Z","timestamp":1472169600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["American J Hum Biol"],"published-print":{"date-parts":[[2017,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objectives<\/jats:title><jats:p>Modern reference standards for long bone growth are lacking for infants (\u22641 year). This study develops a quantitative framework to characterize lower extremity bone shaft growth during infancy based on radiographic images, and compares it to data from the 1930s.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Femoral, tibial, and fibular shaft length measurements (diaphysis plus metaphysis) were collected retrospectively from 70 infants on initial and follow\u2010up skeletal surveys performed for suspected abuse (7\/2005\u20142\/2013). These serial skeletal survey data (SSSD) were compared to the Denver Child Research Council data (DCRCD), a 1930's longitudinal dataset from 80 infants. Mixed effects regression models were developed to estimate growth trajectories from these data. Growth trajectories and short\u2010term (\u22642 months) growth rates were compared.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Statistically distinct models described the contemporary (SSSD) and historic (DCRCD) datasets; however, there was substantial overlap (77\u201490%) between their confidence bands for the three measured bones. Based on developed models, the average long bone shafts of the DCRCD are shorter at birth than SSSD (femur: 77.0 vs. 82.3 mm; tibia: 64.4 vs. 68.2 mm; fibula: 61.0 vs. 64.4 mm), but the DCRCD long bone growth rates are faster than SSSD (femur: 0.21 vs. 0.17 mm\/day; tibia: 0.16 vs. 0.14 mm\/day; fibula: 0.15 vs. 0.14 mm\/day). Short\u2010term growth rates of these bones decreased with age. The effect of sexual dimorphism on long bone growth during infancy was non\u2010significant.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>This study provides reference standards for long bone growth rates during the dynamic period of infancy that may aid clinical assessment, and also inform research studies of disorders associated with altered skeletal growth.<\/jats:p><\/jats:sec>","DOI":"10.1002\/ajhb.22905","type":"journal-article","created":{"date-parts":[[2016,8,26]],"date-time":"2016-08-26T07:47:49Z","timestamp":1472197669000},"source":"Crossref","is-referenced-by-count":9,"title":["Infant lower extremity long bone growth rates: comparison of contemporary with early 20th century data using mixed effect models"],"prefix":"10.1002","volume":"29","author":[{"given":"Andy","family":"Tsai","sequence":"first","affiliation":[{"name":"Department of Radiology Boston Children's Hospital, Harvard Medical School Boston Massachusetts"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Catherine","family":"Stamoulis","sequence":"additional","affiliation":[{"name":"Department of Radiology Boston Children's Hospital, Harvard Medical School Boston Massachusetts"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ignasi","family":"Barber","sequence":"additional","affiliation":[{"name":"Pediatric Radiology Hospital Vall d'Hebron, Universitat Autonoma de Barcelona Av Vall d'Hebron Barcelona 119\u2010129 Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Paul K.","family":"Kleinman","sequence":"additional","affiliation":[{"name":"Department of Radiology Boston Children's Hospital, Harvard Medical School Boston Massachusetts"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2016,8,26]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1109\/TAC.1974.1100705"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1177\/014107689108400505"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1651-2227.1989.tb11270.x"},{"key":"e_1_2_8_5_1","first-page":"203","volume-title":"American College of Radiology. 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