眼眶爆裂骨折的CT表现

CT Findings of Orbital Blowout Fracture

【目的】探讨CT检查对眼眶爆裂骨折的早期诊断价值。【方法】回顾性分析了47例眼眶爆裂骨折的临床及CT表现及好发部位。【结果】眼眶骨折,直接征象是眶壁骨质连续性中断,粉碎,移位及曲度失常。根据骨折的特点可将眼眶骨折分为三类,即单眼眶骨折,多眼眶骨折,并发其他面部直接骨折的眼眶骨折。眼眶爆裂骨折最好发于眼眶内侧壁和底壁,占93.6%。副鼻窦内“泪滴”征是诊断眼眶下壁骨折的特异性间接征象。【结论】CT对早期诊断眼眶爆裂骨折有重要的临床价值。

[Objective]To analyse CT findings of orbital blowout fracture in order to make early diagnosis. [Methods]Clinical manifestations,CT findings and common locations of 47 cases of orbital blowout fracture were retrospectively analysed. [Results]Interruption of bone continuity, fragments, displacement of bone wall were the direct CT signs of fracture. They were classified into three groups： （1）blowout fracture of single orbital wall （2）blowout fracture of two orbital walls （3）orbital blowout complicated with other direct facial fractures. Most blowout fracture involved the medial wall and the orbital floor（93.6%）. Teardrop appearance at the roof of maxillary sinus was a specific indirect sign of inferior orbital wall frature. [Conclusion]CT diagnosis of orbital blowout fracture is of significant clinical importance.