Özet:

INTRODUCTION: Our aim was to evaluate the efficacy of augmented full and partial rectus muscle transposition in children with type 1 Duane syndrome. METHODS: A retrospective review of vertical rectus muscle transposition augmented with lateral fixation procedures in 27 eyes of 25 children with type 1 Duane syndrome was performed and the functional results of partial (12 eyes) and full (15 eyes) rectus muscle transposition were compared. Fifteen eyes had also esotropia while 12 eyes did not have strabismus in primary position. SPSS 15.0 software for Windows® was used to summarize baseline characteristics and outcomes and to compare preoperative and postoperative deviation (paired T-test). RESULTS: Twenty-seven eyes of 25 children (9 male and 16 female) with a mean age of 9.9 (SD: 4.7) years were operated between October 2004 and July 2010. Twenty-three children had unilateral and two children had bilateral type 1 Duane syndrome. In esotropic type 1 Duane syndrome patients, the preoperative angle of deviation at distance was 22.6 ± 10.1 prism diopters (PD) compared with 7.0 ± 10.0 PD postoperatively (p=0.000) and the preoperative angle of deviation at near was 21.8 ± 9.6 PD compared with 6.0 ± 7.9 PD postoperatively (p=0.000). After augmented transpositions, abduction ability was markedly increased in 22 eyes (81 %). DISCUSSION AND CONCLUSION: The addition of lateral fixation sutures to partial and full rectus muscle transpositions improves the tonic abducting force of the procedure for children with type 1 Duane syndrome without compromising adduction. The functional results of full rectus muscle augmented transposition and partial rectus muscle augmented transposition are similar to each other.

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