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NCJ Number: 249271 Find in a Library
Title: Biomechanical Investigation of the Classic Metaphyseal Lesion Using an Immature Porcine Model
Journal: American Journal of Roentgenology  Volume:204  Issue:5  Dated:May 2015  Pages:W503-W509
Author(s): Angela Thompson; Gina Bertocci; Kim Kaczor; Craig Smalley; Mary C. Pierce
Date Published: May 2015
Page Count: 7
Sponsoring Agency: Office of Juvenile Justice and Delinquency Prevention
Washington, DC 20531
Grant Number: 2009-DD-BX-0086
Document: HTML
Type: Report (Grant Sponsored); Report (Study/Research); Research (Applied/Empirical)
Format: Article; Document (Online)
Language: English
Country: United States of America
Annotation: This study investigated loading conditions necessary to create a classic metaphyseal lesion using an immature porcine model.
Abstract: The classic metaphyseal lesion is highly associated with abuse in infants. Classic metaphyseal lesions, also referred to as corner or bucket-handle fractures, are fractures through the metaphyseal region of the long bones near the growth plate. Knowledge of the biomechanics and mechanisms necessary to produce a classic metaphyseal lesion may provide insight into the injury causation associated with this unique fracture type. In the current study, fractures resembling classic metaphyseal lesions were identified in 12 of the 24 specimens. Microcomputed tomography images revealed trabecular disruptions visually similar to classic metaphyseal lesions in children. The study concludes that metaphyseal fractures, consistent with clinical classic metaphyseal lesions, resulted from a single loading event delivering varus or valgus bending to the stifle (knee). A classic metaphyseal lesion is a unique type of fracture with specific morphologic characteristics. Therefore, the study suggests using the term “classic metaphyseal fracture” in lieu of classic metaphyseal lesion to improve the precision of terminology. Twenty-four pelvic limb specimens from 7-day-old and 3-day-old piglets were tested in lateral bending (varus and valgus) using an electromechanical testing machine. All specimens were loaded dynamically in four-point bending at a rate of 100 inches/min. Microcomputed tomography was performed on specimens before and after testing. Pre- and posttest CT images were compared to assess whether fracture had occurred. 27 references (Publisher abstract modified)
Main Term(s): Juvenile victims
Index Term(s): Bone analysis; Child abuse; Child abuse detection; Forensic sciences; Investigative techniques; OJJDP grant-related documents; OJJDP Resources
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