BACKGROUND Ocular motor dysfunction is one of the most common postoperative complications of petroclival meningioma. However, its incidence, recovery rate, and independent risk factors remain poorly explored. METHODS A prospective analysis of 31 petroclival meningiomas was performed. Operative approaches were selected by utilizing a new 6-region classification of petroclival meningiomas we proposed. Two scores were used to evaluate the functions of the oculomotor and abducens nerves. Pearson correlation analysis and binary logistic regression analysis were used to identify independent risk factors for intraoperative oculomotor and abducens nerve injury. RESULTS Postoperative new-onset dysfunctions in the pupillary light reflex and eye/eyelid movements as well as abducens paralysis were detected in eight (25.8%), ten (32.3%) and twelve (38.7%) cases, respectively. Their corresponding recovery rates after 6 months of follow-up were 75% (6/8), 80% (8/10), and 83.3% (10/12), respectively, and their mean times to start recovery were 4.03, 2.43, and 2.5 months, respectively. Tumor invasion into the suprasellar region/sphenoid sinus was the only risk factor for dysfunctions in both the pupillary light reflex (p = 0.001) and eye/eyelid movements (p = 0.002). Intraoperative utilization of the infratrigeminal interspace was the only risk factor for dysfunction in eyeball abduction movement (p = 0.004). CONCLUSIONS Dysfunctions of the oculomotor and abducens nerves recovered within 6 months postoperatively. Tumor extension into the suprasellar region/sphenoid sinus was the only risk factor for oculomotor nerve paralysis. Eye/eyelid movements were more sensitive than the pupillary light reflex in reflecting nerve dysfunctions. Intraoperative utilization of the infratrigeminal interspace was the only risk factor for abducens nerve paralysis.

中文翻译：

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岩丘脑膜瘤切除术后眼运动神经功能的临床研究。

背景技术眼运动功能障碍是岩斜脑膜瘤最常见的术后并发症之一。但是，它的发生率，恢复率和独立的危险因素仍未得到很好的探讨。方法对31例岩斜脑膜瘤进行了前瞻性分析。通过采用我们提出的新的6区岩屑脑膜瘤分类来选择手术方法。使用两个评分来评估动眼神经和外展神经的功能。皮尔逊相关分析和二元逻辑回归分析用于确定术中动眼和外展神经损伤的独立危险因素。结果术后有8例（25.8％），10例（32.3％）和12例（38.）出现瞳孔光反射和眼/眼睑运动以及外展肌麻痹的新发功能障碍。7％）的情况。随访6个月后，其相应的恢复率分别为75％（6/8），80％（8/10）和83.3％（10/12），平均开始恢复时间为4.03、2.43和分别为2.5个月。在瞳孔光反射（p = 0.001）和眼/眼睑运动（p = 0.002）中，肿瘤侵犯到鞍上区/蝶窦是功能障碍的唯一危险因素。术中利用下三叉神经间隙是导致眼球外展运动功能障碍的唯一危险因素（p = 0.004）。结论术后6个月内动眼神经和外展神经功能恢复正常。肿瘤扩展到鞍上区/蝶窦是动眼神经麻痹的唯一危险因素。在反射神经功能障碍方面，眼/眼睑运动比瞳孔光反射更敏感。术中利用下三叉神经间隙是引起外展神经麻痹的唯一危险因素。