Sloan B, McNab A A
Orbital, Plastic and Lacrimal Unit, Royal Victorian Eye and Ear Hospital, East Melbourne, Australia.
Aust N Z J Ophthalmol. 1998 May;26(2):171-3. doi: 10.1111/j.1442-9071.1998.tb01537.x.
Extra-ocular muscle rupture is uncommon, usually seen after penetrating trauma or surgery. It is a very rare cause of diplopia following blunt orbital trauma.
A patient who presented with no inferior rectus function after blunt orbital trauma is described.
Computed tomography (CT) scans demonstrated a large orbital floor fracture and suggested that the inferior rectus muscle was ruptured. This was confirmed at operation. Despite anatomical repair, there was no postoperative improvement in ocular motility.
Traumatic rupture of the inferior rectus is rare. Forced duction and force generation testing and CT are important in diagnosing ocular motility defects following orbital trauma.
眼外肌破裂并不常见，通常见于穿透性创伤或手术后。它是钝性眼眶创伤后复视的极为罕见的原因。
描述了一名在钝性眼眶创伤后出现下直肌无功能的患者。
计算机断层扫描（CT）显示巨大的眶底骨折，并提示下直肌破裂。手术中证实了这一点。尽管进行了解剖修复，但术后眼球运动并无改善。
下直肌的创伤性破裂很少见。牵拉试验和力量产生测试以及CT对于诊断眼眶创伤后的眼球运动缺陷很重要。
