Case Report
Modified Muscle Transposition Procedure for a Case of Inferior Rectus Muscle Aplasia
Shinji Makino, Kozue Hozawa, Reiko Kondo, Mika Kanai, Haruko Suto, Go Mawatari, Kanako Ito
Published:
DOI:
10.1159/000371508
License:
Copyright © 2015 by S. Karger AG, Basel2015This is an Open Access article licensed under the terms of the Creative Commons Attribution-NonCommercial 3.0 Unported license (CC BY-NC) (www.karger.com/OA-license), applicable to the online version of the article only. Users may download, print and share this work on the Internet for noncommercial purposes only, provided the original work is properly cited, and a link to the original work on http://www.karger.com and the terms of this license are included in any shared versions.
Abstract
PurposeWe report a case of inferior rectus muscle aplasia in a 65-year-old woman.MethodsImages were obtained using ocular motility photography and magnetic resonance imaging (MRI), and operative findings were analyzed.ResultsA 65-year-old woman presented with marked right hypertropia. The right eye also had microcornea, iris coloboma, and completely restricted downward movement. MRI showed absence of the inferior rectus muscle in both eyes. During surgery, it was confirmed that the right inferior rectus muscle was absent. The patient underwent a muscle transposition procedure without tenotomy or muscle splitting. A superior rectus muscle tenotomy was also performed. Postoperatively, the right eye showed hypotropia and improved downward movement.ConclusionMuscle transposition without tenotomy or tendon splitting is a surgical option for the unusual abnormality presented in this paper.