Vertical rectus transposition in Duane’s syndrome: does co-contraction worsen?
نویسندگان
چکیده
منابع مشابه
Medial rectus recession after vertical rectus transposition in patients with esotropic Duane syndrome.
OBJECTIVE To describe preoperative characteristics and postoperative results among patients with esotropic Duane syndrome who underwent vertical rectus transposition with vs without subsequent medial rectus recession (MRR). METHODS Clinical records were compared of patients with esotropic Duane syndrome who underwent vertical rectus transposition with (study group) vs without (control group) ...
متن کاملAugmented superior rectus transposition surgery for vertical strabismus in moebius syndrome.
INTRODUCTION Moebius syndrome is a rare disease characterized by unilateral or bilateral congenital nonprogressive facial nerve palsy along with limitation of ocular abductions. Vertical Rectus Transpositions with posterior fixation suture is known to correct abduction deficiencies in case of Moebius syndrome. Traditionally both superior and inferior rectus transposition are done to prevent any...
متن کاملVertical Rectus Muscles Transposition in Large Exotropia with Medial Rectus Muscle Transection Following Endoscopic Sinus Surgery
PURPOSE To evaluate the effect of transposition procedures on the vertical rectus muscle (VRM) in the patients who underwent a medial rectus muscle (MR) transection after endoscopic sinus surgery (ESS). METHODS In 4 patients with exotropia (XT) and a lack of adduction after ESS, orbital CT or MRI revealed a complete transection of the midportion of the MR. Full-tendon VRM transposition was pe...
متن کاملSkew transposition of vertical rectus muscles for excyclovertical deviation.
PURPOSE The authors established a surgical treatment for excyclovertical strabismus in which either the inferior rectus muscle or the superior rectus muscle was transposed diagonally. The effects and the safety of the procedure, called skew transposition, were studied. METHODS Eighteen operations using local anesthesia with eye drops were performed on 17 cases, including 10 with superior obli...
متن کاملMissing lateral rectus force and absence of medial rectus co-contraction in ocular convergence.
For a given position of the eye in the orbit, most abducens motoneurons (LRMNs) fire at higher rates in converged gaze than when convergence is relaxed, implying that lateral rectus (LR) muscle force will be higher for a given eye position in convergence. If medial rectus (MR) muscle force balances LR force, it too would be higher in convergence, that is, LRMN recording studies predict horizont...
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ژورنال
عنوان ژورنال: Eye
سال: 2015
ISSN: 0950-222X,1476-5454
DOI: 10.1038/eye.2014.309