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Related Experiment Videos

The snapped inferior rectus

L Kowal1, S Wutthiphan, P McKelvie

  • 1Ocular Motility Clinic, The Royal Victorian Eye and Ear Hospital, East Melbourne, Victoria, Australia. strabism@netspace.net.au

Australian and New Zealand Journal of Ophthalmology
|April 2, 1998
PubMed
Summary
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Inferior rectus muscle rupture during strabismus surgery is rare. Transposition surgery offers a management solution for snapped muscles, yielding satisfactory but imperfect outcomes.

Area of Science:

  • Ophthalmology
  • Surgical Pathology

Background:

  • Inferior rectus muscle rupture is a rare complication during strabismus surgery.
  • Understanding the etiology and management of this event is crucial for patient outcomes.

Observation:

  • Three cases of inferior rectus muscle rupture during strabismus surgery are presented.
  • Muscle rupture occurred 8-10mm behind the insertion without excessive force.
  • The proximal muscle portion was not identified in any case.

Findings:

  • Transposition of adjacent horizontal muscles to the inferior rectus insertion was performed.
  • Post-operative orthotropia was achieved in one patient, with prism correction needed for another.
  • One patient required a secondary surgery for orthotropia; limited depression was noted in two cases.

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Implications:

  • The unique anatomical relations of the inferior rectus muscle may predispose it to rupture.
  • Advanced patient age might be a contributing factor.
  • Muscle transposition is a viable management strategy when the proximal muscle stump is lost, providing functional, albeit imperfect, results.