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额、筛窦切除术是治疗慢性额、筛窦炎的常用方法,由于术后鼻额管狭窄,结果常不满意。许多医生放置扩张管以维持鼻额管通畅, 因未即刻提供上皮衬料即使长期扩张达6个月,疾病复发率仍很高。1935年Sewall采用取自鼻骨部位的粘骨膜瓣为衬料,后经Boyden和McNaugt改良并推广。即于额、筛窦切除术后,以骨膜起子分离鼻骨粘骨膜,再用咬骨钳切除部分鼻骨和上颌骨鼻突,注意保留鼻骨下端和内缘少量骨质以防损伤鼻侧软骨或两侧鼻骨间
Amount of ethmoid sinus resection is the treatment of chronic frontal, ethmoid sinus common method, due to postoperative nasal stenosis, the results are often not satisfied. Many doctors place dilators to keep their nasal tubes open. The long-term dilatation of epithelial linings, even without immediate delivery, is still high. 1935 Sewall uses a mucoperiosteal flap taken from the nasal bone as a lining, later modified and popularized by Boyden and McNaugt. In the amount of ethmoid sinus resection, the periosteal screw to separate the nasal mucoperiosteal bone, and then use the rongeur to remove part of the nasal and maxillary nasal process, pay attention to keep the lower end of the nasal bone and the inner edge of a small amount of bone to prevent damage to the nasal cartilage or two Lateral nasal bone