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Childhood Obesity and Low-Velocity Knee Dislocation in a Fifteen-Year-Old GirlA Case Report
Tracy Hamblin, MS1; Stuart H. Curtis, BS2; Jacques D'Astous, MD, FRCS(C)3; Stephen K. Aoki, MD4
1 University of Utah, 522 South 1300 East, Salt Lake City, UT 84102
2 University of Utah, 7650 Riverwood Drive, Sandy, UT 84093
3 Shriner's Hospital, 1275 Fairfax Road, Salt Lake City, UT 84103
4 Department of Orthopaedics, University of Utah, 590 Wakara Way, Salt Lake City, UT 84108. E-mail address: Stephen.Aoki@hsc.utah.edu
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Disclosure: The authors did not receive any outside funding or grants in support of their research for or preparation of this work. Neither they nor a member of their immediate families received payments or other benefits or a commitment or agreement to provide such benefits from a commercial entity.

Investigation performed at the Department of Orthopaedics, University of Utah, Salt Lake City, Utah

Copyright © 2010 by The Journal of Bone and Joint Surgery, Inc.
J Bone Joint Surg Am, 2010 Sep 15;92(12):2216-2219. doi: 10.2106/JBJS.J.00115
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According to the 2007-2008 National Health and Nutrition Examination Survey (NHANES), an estimated 17% of children and adolescents between the ages of two and nineteen years are overweight1. The survey data indicated that there was an increase in the prevalence of obesity in children and adolescents in the United States during the years 1976 through 1980 and the years 1999 through 2000. Among two-year-olds to five-year-olds, the percentage has increased from 5% to 10.4%, and among six-year-olds to eleven-year-olds, from 6.5% to 19.6%1. The comorbidities often associated with obesity include diabetes, atherosclerosis, sleep apnea, and coronary artery disease. Musculoskeletal injuries are less often associated with obesity. Minor trauma in overweight individuals can cause serious injuries similar to those caused by high-velocity accidents, with the most notable injury being knee dislocation2. These injuries have been documented mostly in obese adults; however, to our knowledge, the youngest person to have sustained a low-velocity knee dislocation was a nineteen-year-old3. In this report, we document a fifteen-year-old obese girl who sustained a knee dislocation with serious complications due to a ground-level fall. To our knowledge, this is the youngest patient with this injury to be reported in the literature. The patient and her parents were informed that data concerning the case would be submitted for publication, and they consented.
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    These activities have been planned and implemented in accordance with the Essential Areas and policies of the Accreditation Council for Continuing Medical Education (ACCME) through the joint sponsorship of the American Academy of Orthopaedic Surgeons and The Journal of Bone and Joint Surgery, Inc. The American Academy of Orthopaedic Surgeons is accredited by the ACCME to provide continuing medical education for physicians.
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