PMC4891586_01
Maxillofacial CT (0.625 mm axial acquisitions, isotropic reconstructions) of a young female patient after a 20-foot fall. Axial (A) and reconstructed coronal (B, C) images show a nondisplaced mandibular symphyseal fracture (A), angulated right condylar neck fracture (B) and comminuted left high condylar fracture (B, curved arrow). Arrow in C points to lateral dislocation of left TMJ. [Powerpoint Slide]
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A maxillofacial computed tomography (CT) exam (Fig. 1) revealed a nondisplaced fracture at the mandibular symphysis and bilateral temporomandibular joint (TMJ) fractures.
Maxillofacial CT (0.625 mm axial acquisitions, isotropic reconstructions) of a young female patient after a 20-foot fall. Axial (A, B) images show comminuted fractures of the anterior walls of both EAC's (arrowheads). On the coronal view, the fragments are more inferiorly displaced on the left side than on the right side (curved arrows in C). The fluids in the auditory canals likely represent acute blood (A, B). [Powerpoint Slide]
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There was lateral displacement of the left TMJ. There were comminuted fractures of the anterior walls of both external auditory canals (EAC) with acute blood in the canals (Fig. 2). The EAC fracture fragments were more inferiorly and posteriorly displaced on the left (Fig. 3).
Maxillofacial CT (0.625 mm axial acquisitions, isotropic reconstructions) of a young female patient after a 20-foot fall. Sequential parasagittal images show more posterior displacement of EAC fractures (curved arrows) on the left (C is lateral to D) than on the right (A is lateral to B). Note that the parasagittal images are from comparable sagittal planes as evidenced by similar sections through the semicircular canals. [Powerpoint Slide]
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There was lateral displacement of the left TMJ. There were comminuted fractures of the anterior walls of both external auditory canals (EAC) with acute blood in the canals (Fig. 2). The EAC fracture fragments were more inferiorly and posteriorly displaced on the left (Fig. 3).