Anterior and nasal transposition of the inferior oblique muscle: a preliminary case report on a new procedure

Abstract

Purpose: To describe this new extraocular muscle surgery.

Method: Case Report of a child in need of treatment of a weak superior oblique muscle which, at surgery, was in fact found to be absent. After a prior only partially successful recession of the antagonist inferior oblique (IO), the IO muscle was detached and transposed to a new insertion in the inferior nasal quadrant converting the muscle, as a result of its functional origin being the neurovascular bundle ["Ligament of Stager"-ed], from an extorter and elevator of the globe to an intorter and depressor.

Result: Satisfactory binocular alignment was achieved.

Conclusion: This new surgical procedure provides significant advantages, and should be added to our surgical armamentarium.