| The Effect of Modified Anterior Transposition of the Inferior Oblique Muscle for Hypertropia in Superior Oblique Muscle Palsy with Inferior Oblique Muscle Overaction. |
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Kyoung Sun Shin, JI Myong Yoo |
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Department of Ophthalmology, College of Medicine, Gyeongsang National University, Korea. yjm@nongae.gsnu.ac.kr |
| 상사근 마비로 인한 수직편위와 하사근 기능항진에 대한 변형된 하사근 전치술의 교정효과 |
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신경선 ( Kyoung Sun Shin ) , 유지명 ( JI Myong Yoo ) |
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| Abstract |
PURPOSE
The authers studied the effect of modified anterior transposition of the inferior oblique muscle for hypertropia in superior oblique muscle palsy combined inferior oblique muscle overaction. METHODS: We retrospectively analysed 19 cases of superor oblique palsy, which were treated by modified inferior oblique muscle anterior transposition from January 1999 to march 2001. Mean follow-up was 14.6 months. The medial portion of inferior oblique muscle was transpositioned to 1mm posterior position of the temporal insertion of inferior rectus muscle and lateral portion of inferior oblique muscle was moved 5mm on imaginary line, which is the line of between temporal insertion of inferior rectus and inferior insertion of lareral rectus muscle, to the direction of inferior insertion of lateral rectus muscle from temporal insertion of inferior rectus muscle, then backward 6mm from that point perpendicularly. RESULTS: The success rates in modified anterior transposition were 94% in under 20delta of hypertropia and 89.5% in over +3 of IOOA. CONCLUSIONS: Modified anterior transposition is an effective procedure of +3 to +4 inferior oblique muscle overaction and hypertropia in superior oblique muscle palsy as a primary surgery. |
| Key Words:
Hypertropia;Inferior oblique muscle overaction;Modified anterior transposition of inferior oblique muscle;Superior oblique muscle palsy |
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