<?xml version='1.0' encoding='UTF-8'?><xml><records><record><source-app name="HighWire" version="7.x">Drupal-HighWire</source-app><ref-type name="Journal Article">17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Friedland, Orit</style></author><author><style face="normal" font="default" size="100%">Hashkes, Philip J</style></author><author><style face="normal" font="default" size="100%">Jaber, Lutfi</style></author><author><style face="normal" font="default" size="100%">Cohen, Herman A</style></author><author><style face="normal" font="default" size="100%">Eliakim, Alon</style></author><author><style face="normal" font="default" size="100%">Wolach, Baruch</style></author><author><style face="normal" font="default" size="100%">Uziel, Yosef</style></author></authors><secondary-authors></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Decreased bone speed of sound in children with growing pains measured by quantitative ultrasound.</style></title><secondary-title><style face="normal" font="default" size="100%">The Journal of Rheumatology</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2005-07-01 00:00:00</style></date></pub-dates></dates><pages><style  face="normal" font="default" size="100%">1354-1357</style></pages><volume><style face="normal" font="default" size="100%">32</style></volume><issue><style face="normal" font="default" size="100%">7</style></issue><abstract><style  face="normal" font="default" size="100%">OBJECTIVE: The most common cause of recurring childhood musculoskeletal pain is termed growing pains (GP). We hypothesized that GP may represent a local overuse syndrome and therefore may be associated with decreased bone speed of sound (SOS) measured by quantitative ultrasound (US). METHODS: We studied 39 children with GP. Bone SOS was measured by US in both mid-tibial and radius bones according to a validated protocol. Unpaired Student t test was used to compare patients and norms of healthy controls. RESULTS: Tibial SOS was significantly reduced in children with GP compared to controls (Z score -0.546 for boys and -0.891 for girls; p = 0.004, p &lt; 0.001, respectively). Radius SOS was significantly reduced only in girls with GP (Z score -0.692, p = 0.006). No correlation was found between bone SOS and various demographic and clinical factors besides the child's ethnicity and body mass index. CONCLUSION: Bone SOS was significantly reduced in children with GP, especially in painful tibial regions. GP may represent a local overuse syndrome.</style></abstract></record></records></xml>