Inferior rectus muscle transection: a cause of diplopia after non-penetrating orbital trauma

Chee-Chew Yip, Atul Jain, John D McCann, Joseph L Demer
Graefe's Archive for Clinical and Experimental Ophthalmology 2006, 244 (12): 1698-700

BACKGROUND: Vertical diplopia after blow out fracture repair is not uncommon; we report an unusual case of inferior rectus muscle (IR) transection presenting as a persistent infra-duction deficit after uncomplicated blow out fracture repair.

METHODS: We used multi-positional MRI to diagnose a transected IR with a contracted and posteriorly displaced muscle belly.

RESULTS: Infra-duction improved after surgical repair of the transected IR.

CONCLUSION: Multipositional MRI is a novel technology that can be used to assist in the decisive management of persistent post-operative infra-duction deficits and avoid prolonged periods of observation.

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