Surgical results of the slipped medial rectus muscle after hang back recession surgery
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Conflicts of Interest: Duranoglu Y, None; Ilhan HD, None; Guler Alis M, None.
ACKNOWLEDGEMENTS: The authors would like to thank to Dr. ADN Murray who taught the surgical management of a slipped muscle.

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    Abstract:

    AIM:To analyze the surgical results of a slipped medial rectus muscle (MRM) after hang back recession surgery for esotropia.METHODS:Twenty-one patients who underwent re-exploration for diagnosed slipped muscle after hang back recession surgery were included in this retrospective study. Dynamic magnetic resonance imaging was performed to identify the location of the slipped muscle. Ocular motility was evaluated with assessment with prism and cover test in gaze at cardinal positions. The operations were performed by the same consultant. Intraoperative forced duction test was performed under general anesthesia. The empty sheath of the slipped MRM was resected and the muscle was advanced to the original insertion site in all patients.RESULTS:The average age of 21 patients who hadconsecutive exotropia with a slipped MRM at the time of presentation was 17.4±5.4y (5-50y). The average duration between the first operation and the diagnosis of the slipped muscle was 25mo (12 to 36mo). The mean follow up after the corrective surgery was 28mo. The mean preoperative adduction limitation in the field of action of the slipped muscle was -2.26 (ranging from -1 to -4). All patients had full adduction postoperatively.CONCLUSION:The diagnosis of the slipped muscle should be confirmed during the strabismus surgery. The slipped muscle may be caused due to insufficient suture and excessive rubbing of the eye. When divergent strabismus is observed after the recession of the MRM, a slipped muscle should be considered in the differential diagnosis.

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Yasar Duranoglu, Hatice Deniz Ilhan, Meryem Guler Alis. Surgical results of the slipped medial rectus muscle after hang back recession surgery. Int J Ophthalmol, 2014,7(6):1035-1038

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Publication History
  • Received:September 30,2013
  • Revised:March 10,2014
  • Adopted:March 10,2014
  • Online: December 15,2014
  • Published: