Anatomical Evaluations of The Location and Insertion Shape of Horizontal Rectus Muscle.
- Author:
Young Chun LEE
1
;
Suck Woo YANG
Author Information
1. Department of Ophthalmology, Kangnam St. Mary's Hospital, Catholic University, Medical College, Seoul, Korea.
- Publication Type:Original Article
- Keywords:
Horizontal recus muscle;
Limbus-insertion distance;
Insertion shape
- MeSH:
Esotropia;
Exotropia;
Humans;
Muscles
- From:Journal of the Korean Ophthalmological Society
1995;36(8):1357-1362
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
We examined the variations in the limbus-insertion distance, the width and the insertion shape of 260 horizontal recti muscles in 137 strabismic patients, and evaluated the relationship between insertion shape and postoperative results. The average limbus-insertion distance of medial rectus muscle was 4.72 +/- 0.49mm and that of lateral rectus muscle was 6.29 +/- 0.58mm. The width of medial rectus and lateral rectus mascle was 9.84 +/- 0.83mm and 9.57 +/- 0.84mm. The insertion shapes of horizontal rectus muscle were divided into 5 groups, straight, oblique type I and II, concave and convex patterns. According to insertion shape, insertion shape of the medial rectus muscle had no statistic difference in esotropia and exotropia(P=0.179), but in case of the lateral rectus muscle, it was staistically significant in both exotropia and esotropia(P=0.036). When the deviation angle was larger than 40 delta, the length of limbus width was statistically significant in lateral rectus muscle(P=0.018). The insertion shape divided into straight and non-straight pattern was statistically insignificant on postoperative success rate.
