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  • Title: Inferior rectus rupture following blowout fracture.
    Author: Sloan B, McNab AA.
    Journal: Aust N Z J Ophthalmol; 1998 May; 26(2):171-3. PubMed ID: 9630302.
    Abstract:
    BACKGROUND: 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. METHODS: A patient who presented with no inferior rectus function after blunt orbital trauma is described. RESULTS: 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. CONCLUSIONS: 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.
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