J Korean Ophthalmol Soc.  1993 Dec;34(12):1257-1261.

Superior Rectus Recession with Modified Hang-loose Technique in Rabbits

• Sin DH
• Roh YB

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.

Keyword

Forward creeping; Hang-loose technique; Large recession; Modified hang-loose technique; Superior rectus muscle

MeSH Terms

Muscles
Rabbits*
Strabismus