The 3D CT scan of this patient showed this. What was your conclusion?
Correct Answer: Fracture of condyle
Description: Fracture of condyle Radiographic Features
View taken—displaced condylar fracture is well demonstrated on AP and lateral projection.
Non-displaced fracture is well seen on AP view
Increased width of fracture condyle—When fracture occurs, contraction of the lateral pterygoid muscle rotates the transverse axis of the condylar head, so that the medial end moves anteriorly, thus increasing the apparent width of the fractured condyle.
Complete fracture dislocation—In complete fracture dislocation, the condylar head may be inclined medially at an approximate 45° angle to the vertical axis of the ramus.
Anterior displacement of the condyle—If the condylar head has been displaced anteriorly and turned at 90° angle to the vertical axis of the ramus as viewed from the lateral aspect, then only the articular surface of the condylar head will be seen; this will appear as a narrow radiopaque bar situated in the infratemporal fossa.
Condyle split—The condyle may split with little or no displacement of the fragments, or some portion may be separated from head of the bone. Rarely, the whole of the articular portion is crushed and flattened.
CT scan—In difficult cases, CT scan has been demonstrated to show changes in the relationship of the condyle to the mandibular fossa more precisely than the conventional radiographic examination. It is also claimed that it can demonstrate fine bony alterations at the fractured site.
Category:
Radiology
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