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


CONCLUSIONS
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.
Orbital and Ophthalmic Plastic Surgery Division, Jules Stein Eye Institute, David Geffen Medical School at UCLA, Los Angeles, CA, USA.
Chee-Chew
CC
Yip
Atul
A
Jain
John D
JD
McCann
Joseph L
JL
Demer
D000293:Adolescent; D004172:Diplopia / Q000175:diagnosis / Q000209:etiology* / Q000601:surgery; D005133:Eye Movements; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009801:Oculomotor Muscles / Q000293:injuries* / Q000473:pathology / Q000601:surgery; D009915:Orbit / Q000293:injuries*; D009917:Orbital Fractures / Q000150:complications* / Q000601:surgery; D012421:Rupture; D014949:Wounds, Nonpenetrating / Q000150:complications* / Q000601:surgery