Vertical Rectus Muscle Transposition for Bilateral Duane Syndrome

Background: Augmented transposition of the superior and inferior rectus muscles to the lateral rectus muscle is effective surgical treatment for esotropia in unilateral Duane syndrome. Medial rectus muscle recession in bilateral Duane syndrome may increase the risk of consecutive exotropia and cause limitation to adduction postoperatively. Vertical rectus muscle transposition may be useful in bilateral Duane syndrome with esotropia. Methods: We undertook a retrospective review of 11 patients with bilateral Duane syndrome and esotropia in primary position. All patients had vertical rectus muscle transpositions. Six patients had unilateral vertical rectus transpositions (2 eyes with and 4 without suture augmentation). Twelve eyes from 7 children (2 unilateral and 5 bilateral) had transpositions augmented with posterior fixation sutures. Posterior fixation suture were added to large deviations in patients without prior medial rectus recessions. Results: The preoperative esotropia at distance was 22.8 ± 6.3 prism diopters (PD). It reduced to 2.0 ± 6.7 PD postoperatively. ( P P Conclusion: Vertical rectus muscle transposition in patients with bilateral Duane syndrome and esotropia is an effective procedure to improve ocular alignment and motility while preserving adduction.