title: [Accidental injury of medial rectus muscle in endoscopic surgery of ethmoidal sinus: case report and survey of literature].
abstract: BACKGROUND
  Ophthalmologic complications of endoscopic sinus surgery are rare, consequences may be serious.
  
  
  METHODS
  Two patients are presented who suffered lesions of the internal rectus muscles during endoscopic ethmoidectomy. The clinical picture of this rare complication resembles that of a paralysis of the medial rectus muscle.
  
  
  RESULTS
  In one patient the very thinned medial rectus muscle was tucked in a first surgical step. In the second step the external rectus muscle was recessed. Fusion in primary gaze was possible. In the second patient surgery was planned, he died however.
  
  
  CONCLUSIONS
  Because of the anatomy the medial rectus muscle is endangered in endoscopic ethmoidectomy. Considered to the frequency of this surgery the incidence however is rare.
authors.affiliation: Augenklinik und -poliklinik rechts der Isar der Technischen Universität München, Germany. th.schmidt@lrz.tu-muenchen.de
authors.forename: Thomas
authors.initials: T
authors.lastname: Schmidt
authors.forename: Helga
authors.initials: H
authors.lastname: Thaller-Antlanger
authors.forename: Matthias
authors.initials: M
authors.lastname: Klopfer
mesh_terms: D000368:Aged; D002908:Chronic Disease; D004724:Endoscopy; D015521:Ethmoid Sinusitis / Q000601:surgery*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009298:Nasal Polyps / Q000601:surgery*; D009801:Oculomotor Muscles / Q000293:injuries* / Q000601:surgery; D011183:Postoperative Complications / Q000209:etiology* / Q000601:surgery; D012086:Reoperation; D013285:Strabismus / Q000209:etiology* / Q000601:surgery; D014057:Tomography, X-Ray Computed
vernacular_title: Akzidentielle Verletzung des Musculus rectus internus bei endoskopischer Siebbeinzelloperation: Kasuistik mit Literaturübersicht.