Computed tomography and magnetic resonance imaging in the management of coronoid process hyperplasia: review of five cases

To describe the imaging features of primary bilateral coronoid hyperplasia, with particular reference to the use of CT and MRI. A series of five cases is reviewed. The correct diagnosis was achieved with panoramic radiography alone or with the addition of CT. MRI did not provide additional pre-operative information; it was useful in the postoperative assessment of poor functional recovery in order to determine the presence of haematoma and/or fibrosis. Although panoramic radiography alone can demonstrate this condition, CT has an important role in diagnosis and is useful for an adequate surgical planning by allowing assessment of the size of impingement of the coronoid processes. MRI is useful for evaluating postoperative complications involving soft tissue.