TY - JOUR T1 - Isolated Fractures of the Posterior Maxillary Sinus: CT Appearance and Proposed Mechanism JF - American Journal of Neuroradiology JO - Am. J. Neuroradiol. SP - 468 LP - 470 DO - 10.3174/ajnr.A2337 VL - 32 IS - 3 AU - J.S. Simonds AU - C.T. Whitlow AU - M.Y.M. Chen AU - D.W. Williams III Y1 - 2011/03/01 UR - http://www.ajnr.org/content/32/3/468.abstract N2 - A heretofore unreported type of facial fracture is discussed. Twenty-two cases of posterior maxillary wall fracture are reviewed, of which 59% demonstrated concomitant mandibular fracture. The proposed mechanism for this injury is an impact from the ipsilateral mandibular coronoid process striking the posterior maxillary wall, with associated mandibular dislocation or fracture. As such, further investigation of the mandible may be warranted when this type of maxillary wall fracture is encountered to exclude concomitant injury. GSWgunshot woundMVCmotor vehicle crashTMJtemporomandibular joint ER -