There are exceptional fractures of the maxilla that have not been described in the literature. They are characterised by their proper mechanism and particular circumstances related to the anatomic conditions. These fractures ought to be described to define novel clinical features. Fracture of the nasal spine needs to happen a direct choc on the nasal base with an anatomically long spine. Clinical presentation showed important oedema of the upper lip, ecchymosis and a swelling of the superior vestibular sulcus. The diagnosis is confirmed by means of an X-ray revealing the fracture on the profile incidence. Isolated fracture of the posterior wall of the maxillary sinus is another rare entity created by a direct choc on the maxillary tuberosity. We advocate as a possible hypothesis that direct trauma of this region causes intrasinus high pressure leading to the fracture of the posterior wall. The authors tend to describe these rare fractures and to establish their anatomic and clinical aspects.
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