高密度多孔聚乙烯片填充治疗爆裂性眼眶骨折

目的：评估高密度多孔聚乙烯片填充治疗爆裂性眼眶骨折的有效性。方法：选择2003年6月至2006年1月，在浙江大学附属第一医院眼科中心就诊的23例眼眶爆裂性骨折患者，进行高密度多孔聚乙烯片修复眶壁缺损并纠正眼球内陷。观察患者手术前后视力、眼球突出度、复视和眼位变化。结果：23例患者术后均未出现患眼视力明显下降和视力丧失，眼球内陷度数为（1．7±0．5）mm，与术前（3．9±1．2）mm比较，差异有统计学意义（P〈0．05）。术后1个月10例患者复视完全消失，11例患者第一眼位无复视，但仍有周边复视，2例术后第一眼位复视仍存在。术后22例患者眼球各方向运动基本正常，但有1例患者术后出现眼位上移，下转轻度受限，2周后恢复正常。结论：高密度多孔聚乙烯片填充治疗爆裂性眼眶骨折安全有效。

Porous polyethylene channel implants in reconstruction of orbital blowout fractures

OBJECTIVE: To evaluate the efficacy of porous polyethylene channel implants in reconstruction of orbital blowout fractures. METHODS: Twenty-three patients with orbital blowout fractures were admitted in our eye center from June 2003 to January 2006. Porous polyethylene channel implants were used to repair the defects of orbital wall and to correct the enophthalmos. The visual acuity, the degree of enophthalmos, diplopia and position were recorded preoperatively and postoperatively. RESULT: No patients presented loss or apparent descent of visual acuity after surgery. Postoperative mean enophthalmos (1.7+/-0.5)mm was smaller significantly than that of preoperation [(3.9 +/-1.2)mm (P<0.05)]. Diplopia disappeared in 10 patients 1 month after surgery. Diplopia disappeared in 11 patients in primary position, but it remained in other positions. Diplopia remained in primary position in 2 patients. Ocular movement in 22 patients was normal postoperatively. While primary position upward occurred in 1 patient postoperatively and 2 weeks later it became normal. CONCLUSION: Porous polyethylene channel implants are effective in reconstruction of orbital blowout fractures.