Journal of the Korean Ophthalmological Society 1993;34(12):1257-1261.
Published online December 1, 1993.
Superior Rectus Recession with Modified Hang-loose Technique in Rabbits.
Dong Hyo Sin, Young Bae Roh
Department of Ophthalmology, College of Medicine, Pusan National University, Pusan, Korea.
Hang - loose 변형법에 의한 가토상직근의 후전
신동효(Dong Hyo Sin),노영배(Young Bae Roh)
Abstract
Hang-loose technique(HLT) is a reliable recession method in strabismus surgery. However, the loop length and the parallel of the anterior muscle border may not be sustained when the muscle was recessed behing the equator. This study was designed to assess the postoperative status of the large-recessed superior rectus muscle using the HLT and a modification of HLT(M-HLT) respectively in rabbits. Some of the recessed muscles with both techniques showed forward creeping. The average creeping was 0.5 mm on M-HLT and 1.1 mm on HLT in 7 mm recession group, and the difference was statistically significant(p=0.023). In 8 mm recession group, the average creeping was 1.0 mm on M-HLT and 1.8 mm on HLT. The difference was statistically significant(p=0.012). Although the parallel of the anterior muscle border was better on HLT than on M-HLT, the difference was not significant statistically. According to our result, M-HLT may be an useful alternative method in the cases of large recession with HLT.
Key Words: Forward creeping;Hang-loose technique;Large recession;Modified hang-loose technique;Superior rectus muscle


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