患者男,37岁。用电锯锯木板时,头颈部被飞溅的碎木片击中,剧烈疼痛,当场晕厥。查体见:右侧面颊部伤口约2.5cm,深达肌层,颏部伤口约2cm,木片刺入软组织,一半在外,颈前皮肤有几处表浅挫裂伤。当时取出颏部木片后,3处伤口均清创探查,未见明显异物存留,遂缝合。术后1月,患者右鼻腔不断流出少许脓涕,右侧面部麻木,上颌窦区伤口愈合不好,有瘘管形成,考虑为异物存留。即行上颌窦根治术,见窦前壁骨质凹陷碎裂,有木片存留上颌窦顶壁,木片贴顶壁向后嵌入,直达翼腭窝,很牢固,其前缘 Male patient, 37 years old. Sawing planks with electric saws, the head and neck were hit by splintered chips, severe pain and syncope on the spot. Check the body see: the right side of the cheek wound about 2.5cm, deep muscular layer, chin wound about 2cm, wood piercing soft tissue, half out, there are several superficial laceration of the skin before the laceration. After removing the chin wood, all three wound debridement exploration, no obvious foreign body retention, then suture. One month after surgery, the patient’s right nasal cavity continued to shed a small amount of purulent nasal discharge. The right side of the facial numbness did not heal well in the maxillary sinus area. A fistula was formed and the foreign body was retained. That line maxillary sinus surgery, see the front of the anterior sinus bone dehiscence fragmentation, with the survival of the parietal maxillary sinus wall, wood veneer stuck to the back wall, direct access to the pterygopalatine fossa, very solid, the leading edge