Answer D. Early mobilization of the mandible to avoid TMJ dysfunction or ankylosis
Intermaxillary fixation (IMF) is used for a maximum of 2-3 weeks in adults and 10-14 days in children, followed by a period of aggressive functional rehabilitation to avoid TMJ dysfunction or ankylosis.
Contemporary Oral and Maxillofacial Surgery. Peterson, et.al. 1993 p. 602
Because of trauma to the joint structures, an ever-present danger exists of ankylosis of the condyle to the glenoid fossa. Early manipulation during healing will create movement in the joint rather than in the fracture if it is done carefully, and primary healing of the fractures parts will occur with no ankylosis in the joint.
Textbook of Oral and Maxillofacial Surgery. Kruger, 6th edition, 1984.
Closed reduction - treatment of the fracture using only IMF , does not involve direct opening, exposure, and manipulation of the fractured area.
Open reduction - direct exosure and reduction of the fracture through a surgical incision
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