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J Surg Case Rep. 2013 Sep 26;2013(9). doi: 10.1093/jscr/rjt076.

Isolated inferior rectus muscle rupture after blunt orbital trauma.

Journal of surgical case reports

Patrick Tomasetti, Philipp Metzler, Christine Jacobsen

Affiliations

  1. Department of Cranio-Maxillofacial and Oral Surgery, University Hospital Zurich, Zurich, Switzerland [email protected].
  2. Department of Cranio-Maxillofacial and Oral Surgery, University Hospital Zurich, Zurich, Switzerland.

PMID: 24963904 PMCID: PMC3813725 DOI: 10.1093/jscr/rjt076

Abstract

A 44-year-old man was referred to our department with diplopia, periorbital swelling and haematoma of the left eye after orbital trauma due to a punch. During the examination, mild enophthalmos, hypertropia and a total absence of infraduction were observed. An orbital computed tomography (CT) scan demonstrated a left orbital floor blow-out fracture, with caudal herniation of periorbital fat and rectus inferior muscle. Repair was performed under total anaesthesia with placement of a Titan mesh. The following days were marked by the persistence of diplopia without improvement of infraduction. A postoperative, 0.5 mm CT scan highlighted a complete rupture of the inferior rectus muscle, not seen before operation, by a 1.0 mm-sliced CT. In this case, orthoptic therapy was undertaken with good results after 6 months and without need of a second repair.

Published by Oxford University Press and JSCR Publishing Ltd. All rights reserved. © The Author 2013.

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