眶底骨折是颧骨损伤的最常见最重要的组成部分。作者探查582例颧骨损伤患者的眶底,发现只有20％有真正的爆出骨折而无眶缘损伤。5％只有骨膜撕伤并无骨折或仅有线状裂缝。眶底损伤比想象的更为严重。即使轻微损伤如骨膜撕伤,在6—12周后也可发生严重的后遗症。主要表现为复视或半侧头痛,尤其是在晚上疲劳时集中注意力看书更明显。如果这些后遗症发现较晚,其与外伤的关系常被忽略。眶底软组织很脆弱,用力复位颧骨折片或LeFortⅡ型上颌骨折片时,对眶底软组织造成的损伤和外伤引起的一样严重。作者建议对于这二种骨折病人,应常规探查眶底,并在眶底骨面与软组 Orbital floor fractures are the most common and important component of cheekbones. The authors examined the orbital floor of 582 patients with zygomatic lesions and found that only 20% had a true burst fracture without orbital rim injury. 5% only periosteal tears without fracture or only linear cracks. Orbital floor damage is more serious than expected. Severe sequelae can occur after 6-12 weeks, even with minor injuries such as periosteal tears. Mainly for diplopia or hemifacial headache, especially in the evening when fatigue focused reading more obvious. If these sequelae are found later, their relationship to trauma is often overlooked. Orbital soft tissue is very fragile, hard to reset the zygomatic fracture or LeFort Ⅱ maxillary fragments, orbital damage caused by soft tissue trauma caused as much. The authors suggest that for these two fracture patients, the orbital floor should be routinely probed, and in the orbital floor and soft tissue