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Internal Oblique Radiographs for Diagnosis of Nondisplaced or Minimally Displaced Lateral Condylar Fractures of the Humerus in Children

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Author(s)
송광순강철형민병우배기철조철현
Alternative Author(s)
Song, Kwang SoonKang, Chul HyungMin, Byung WooBae, Ki CheorCho, Chul Hyun
Publication Year
2007
Abstract
Background: Several radiographic criteria based on only standard anteroposterior and lateral radiographs have been
suggested for predicting the stability of lateral condylar fractures of the humerus in children. Despite adherence to
these guidelines, further displacement often occurs after the initial diagnosis and stability assessment. The purpose
of this study was to define the usefulness of an internal oblique radiograph in the assessment of these fractures.
Methods: We prospectively studied fifty-four lateral humeral condylar fractures in fifty-four children seen between
March 2002 and December 2004 to determine the efficacy of internal oblique radiographs in gauging the amount of
displacement and the fracture pattern. Plain anteroposterior, lateral, internal oblique, and external oblique radiographs
were initially made for all fifty-four patients, and three-dimensional computed tomography scans were performed
for seven patients.
Results: A large percentage (70%) of the fractures were seen to have different amounts of displacement on the anteroposterior
and internal oblique radiographs, and a large percentage (75%) were seen to have different fracture patterns,
according to the criteria suggested by Finnbogason et al., on the two views. The internal oblique radiograph
was more accurate for demonstrating the fracture gap (thirty cases were seen to have more displacement on that
view) and for demonstrating the fracture pattern (twenty cases were seen to have more instability on the internal oblique
view). We also confirmed the direction of the fracture line and the location of the fragment more accurately with
three-dimensional computed tomography.
Conclusions: It is not optimal to evaluate the amount of displacement and the stability of a lateral condylar fracture
of the humerus in children on the basis of just anteroposterior and lateral elbow radiographs. Classifications
should be based on the greatest displacement seen on at least three radiographic views, especially the internal
oblique view.
Level of Evidence: Prognostic Level I. See Instructions to Authors for a complete description of levels of evidence.
Department
Dept. of Orthopedic Surgery (정형외과학)
Publisher
School of Medicine
Citation
Journal of bone and joint surgery. American Volume., Vol.89-A(1) : 58-63, 2007
Type
Article
ISSN
0021-9355
URI
http://kumel.medlib.dsmc.or.kr/handle/2015.oak/34491
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