Medial rectus disruption

Case contributed by Dr Varun Babu

Presentation

Post functional endoscopic sinus surgery (FESS) exotropia

Patient Data

Age: 35 years
Gender: Male
MRI

Disruption of the middle third of the medial rectus with extensive orbital fat dirtying. 

CT

CT correlation reveals the distinct lamina papyracea defect. 

Annotated image

Thin axial section color coded depiction of disrupted medial rectus. 

Case Discussion

Out to get those sinuses cleaned, but unfortunately the lamina papyracea departed and cleaning beyond the permitted boundaries has resulted in a grievous injury to the medial rectus with dirtying of the orbital fat. 

Being the thinnest wall of the orbit, the lamina papyracea is prone for injury, specially at the time of uncinectomy. The attachment of the uncinate process and the overzealous pressure can result in disruption of the medial orbital wall exposing orbital structures to injury. 

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Case information

rID: 51208
Case created: 7th Feb 2017
Last edited: 8th Feb 2017
System: Head & Neck
Inclusion in quiz mode: Included

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