Lateral Rectus Muscle Tendon Elongation

Status Completed

Clinical Trial Summary

To evaluate a technique using resected medial rectus muscle transplantation for elongation of Lateral rectus tendon as a monocular surgery for large angle sensory exotropia.

Clinical Trial Description

A prospective study done in Tanta university in the period between January 2017 and June 2018.It included 16 patients with sensory exotropia ≥50PD. Full history was taken. Visual acuity, cycloplegic refraction and fundus exam of both eyes was performed prior to surgery. Strabismus angles were measured at near and distance by alternate prism cover test. Any limitation of adduction or abduction was scaled from -4 to 0. Patients were followed for 6 months.

SURGICAL PROCEDURE:

The MR muscle was dissected through a limbal incision. Two single arm 6-0 Vicryl sutures were placed at desired distance from the insertion as the routine resection of rectus muscle and another pair of 6-0 Vicryl was placed at the insertion. The muscle was then incised from its insertion, and the posteriorly (distally) placed 6-0 Vicryl sutures were passed through the original insertion. The resected segment is then put in saline. A vicryl 6-0 suture was tied at the LR muscle insertion. The muscle was incised from its insertion. Next, the stump of the resected segment was then sutured to the sclera at the desired position measured by the strabismus caliber according to the surgical dosage sufficient to correct the premeasured distant angle (taking into consideration the length of the added segment, which will be added to the amount of recession), and the distal end of this stump was sutured with the proximal end of LR with the 6-0 Vicryl already placed on the LR. Now the elongated muscle was sutured at desired site from the original insertion of LR as done in routine rectus muscle recession.

The patients were followed at 1day after surgery, 2 weeks, 3 month, and 6 months.

In each visit the distant angle of deviation was measured by prism cover test, any limitation of adduction and abduction was scaled, and patient satisfaction with results at last follow up was obtained, all results were recorded and tabulated. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT04286945
Study type	Interventional
Source	Tanta University
Contact
Status	Completed
Phase	N/A
Start date	January 1, 2017
Completion date	September 1, 2018

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.