Medial rectus muscle incarceration in pediatric medial orbital wall trapdoor fractures.
OBJECTIVE
We describe two cases of orbital trapdoor fractures with medial rectus muscle incarceration.


METHODS
Small interventional case series.


RESULTS
This is a retrospective university based report of two healthy males (11 and 14 years old) who developed diplopia following blunt orbital trauma. Both patients had decreased horizontal ocular motility of the involved eye with minimal additional evidence of trauma. Computed tomography (CT) demonstrated no significant bony displacement; however, the left medial rectus muscle was located within the ethmoid sinus in the first and had an abnormal size and shape in the second case. In both cases, during urgent surgical repair, the incarcerated medial rectus muscle was gently released from linear non-displaced medial wall fractures and ocular motility normalized postoperatively.


CONCLUSIONS
In pediatric patients sustaining blunt orbital trauma, medial rectus incarceration should be considered and managed accordingly.
Stanford University School of Medicine, Department of Ophthalmology, Stanford, California 94304-5353, USA. mcculley@stanford.edu
T J
TJ
McCulley
C C
CC
Yip
R C
RC
Kersten
D R
DR
Kulwin
D000293:Adolescent; D002648:Child; D004172:Diplopia / Q000000981:diagnostic imaging / Q000209:etiology; D006801:Humans; D008297:Male; D015835:Ocular Motility Disorders / Q000000981:diagnostic imaging / Q000209:etiology*; D009801:Oculomotor Muscles / Q000000981:diagnostic imaging / Q000473:pathology*; D009915:Orbit / Q000000981:diagnostic imaging / Q000293:injuries*; D009917:Orbital Fractures / Q000150:complications* / Q000000981:diagnostic imaging; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed; D014949:Wounds, Nonpenetrating / Q000150:complications / Q000000981:diagnostic imaging