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Marlo Galli - One of the best experts on this subject based on the ideXlab platform.
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comparison of lateral Rectus Muscle re recession and Medial Rectus Muscle resection for treatment of postoperative exotropia
2015Co-Authors: Gregg T Lueder, Marlo GalliAbstract:Purpose To compare the outcomes of unilateral lateral Rectus Muscle re-recession and Medial Rectus Muscle resection for treatment of recurrent or persistent exotropia. Design Retrospective nonrandomized clinical trial. Methods setting: Hospital-based clinical practice. patient population: Forty patients with recurrent or persistent exotropia following bilateral lateral Rectus Muscle recessions. intervention: Fourteen patients were treated with unilateral Medial Rectus Muscle resection and 26 with unilateral lateral Rectus Muscle re-recession. main outcome measures: Outcomes were considered successful if the patients had deviations less than 10 prism diopters (PD) at last follow-up. All patients were followed for at least 1 year postoperatively. Results The mean preoperative deviations were 17.4 PD in the Medial Rectus Muscle resection group and 18.1 PD in the lateral Rectus Muscle re-recession group. Successful outcomes were achieved in 9 of 14 patients (64%) treated with Medial Rectus Muscle resection and 19 of 26 patients (73%) treated with lateral Rectus Muscle re-recession. There was no statistically significant difference between these outcomes. Mean follow-up was 4.5 years in the Medial Rectus Muscle resection group and 2.9 years in the lateral Rectus Muscle re-recession group. Conclusions Surgery on a single Muscle can be used to treat moderate-angle recurrent or persistent exotropia. Unilateral re-recession of the lateral Rectus Muscle and Medial Rectus Muscle resection have equivalent success rates.
Gregg T Lueder - One of the best experts on this subject based on the ideXlab platform.
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comparison of lateral Rectus Muscle re recession and Medial Rectus Muscle resection for treatment of postoperative exotropia
2015Co-Authors: Gregg T Lueder, Marlo GalliAbstract:Purpose To compare the outcomes of unilateral lateral Rectus Muscle re-recession and Medial Rectus Muscle resection for treatment of recurrent or persistent exotropia. Design Retrospective nonrandomized clinical trial. Methods setting: Hospital-based clinical practice. patient population: Forty patients with recurrent or persistent exotropia following bilateral lateral Rectus Muscle recessions. intervention: Fourteen patients were treated with unilateral Medial Rectus Muscle resection and 26 with unilateral lateral Rectus Muscle re-recession. main outcome measures: Outcomes were considered successful if the patients had deviations less than 10 prism diopters (PD) at last follow-up. All patients were followed for at least 1 year postoperatively. Results The mean preoperative deviations were 17.4 PD in the Medial Rectus Muscle resection group and 18.1 PD in the lateral Rectus Muscle re-recession group. Successful outcomes were achieved in 9 of 14 patients (64%) treated with Medial Rectus Muscle resection and 19 of 26 patients (73%) treated with lateral Rectus Muscle re-recession. There was no statistically significant difference between these outcomes. Mean follow-up was 4.5 years in the Medial Rectus Muscle resection group and 2.9 years in the lateral Rectus Muscle re-recession group. Conclusions Surgery on a single Muscle can be used to treat moderate-angle recurrent or persistent exotropia. Unilateral re-recession of the lateral Rectus Muscle and Medial Rectus Muscle resection have equivalent success rates.
In Jeong Lyu - One of the best experts on this subject based on the ideXlab platform.
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surgical responses of Medial Rectus Muscle recession in thyroid eye disease related esotropia
2016Co-Authors: In Jeong Lyu, Juyeun Lee, Mingui Kong, Kyungah ParkAbstract:We evaluate the surgical outcomes and surgical responses of Medial Rectus Muscle (MR) recession patients with thyroid eye disease (TED)-related esotropia (ET). The surgical dose-response curves 1 week postoperatively and at the final visit were analyzed. Univariable and multivariable linear regression analyses were applied to investigate factors influencing surgical dose-response. A total of 43 patients with TED-related ET that underwent MR recession were included. The final success rate was 86.0% and the rate of undercorrection was 14.0%. The surgical dose-response curves of TED-related ET showed a gentle slope compared with those of standard surgical tables. In the univariable model, simultaneous vertical Rectus Muscle recession was the only significant factor influencing surgical dose-response of MR recession in TED-related ET (β = -0.397, P = 0.044). In a model adjusted for age, sex, type of surgery, and preoperative horizontal angle of deviation, simultaneous vertical Rectus Muscle recession showed marginal significance (β = -0.389, P = 0.064). The surgical dose-response curve of TED-related ET was unique. Simultaneous vertical Rectus Muscle recession was associated with increased surgical dose-response in TED-related ET.
John S Elston - One of the best experts on this subject based on the ideXlab platform.
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isolated extraocular Muscle infiltration with plasmacytoma treated with localized injection of dexamethasone
2015Co-Authors: Sally L Painter, Emmy Dickens, John S ElstonAbstract:Plasmacytoma of the orbit secondary to multiple myeloma is rare and has not previously been reported limited to an extraocular Muscle. Conventional treatment is either localized radiotherapy or systemic chemotherapy. We report a case of plasmacytoma within the Medial Rectus Muscle, which regressed completely with localized infiltration of dexamethasone.
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bifid Medial Rectus Muscle insertion associated with intermittent distance exotropia
2005Co-Authors: Venki Sundaram, Simon D M Chen, Stephen Colley, Kuki Hundal, John S ElstonAbstract:6-YEAR-OLD GIRL with an intermittentdistanceexotropia measuring 40 prism diopters with no associated systemic abnormalities underwent corrective squint surgery. Peroperatively, she was found to have an anomalous bifid left Medial Rectus Muscle insertion composed of 2 distinct parallel muscular heads and insertions originating from 1 common origin (Figure). Thenarrowersuperiorlimbofthe bifid Muscle measured 3-mm wide andwasinserted5mmfromthelimbus,whilethewiderinferiorlimbof the bifid Muscle measured 5-mm wide and was inserted 5.5 mm from the limbus. This finding required a modification of the planned surgical procedure. Both limbs of the anomalous Medial Rectus were resected by 4 mm and sutured together to reformasinglecontinuousMuscleinsertion. The lateral Rectus was recessed 6 mm from its insertion. Fourteen months’ postoperatively, her ocular alignment was improved and stable, with a distance exodeviation of 16 prism diopters. COMMENT Oblique and vertical Rectus Muscle anomalies have commonly been reported in patients with craniofacial syndromes, 1,2 while horizontal Rectus Muscle anomalies have uncommonly been associated with such syndromes. 3 A bifid left Medial Rectus Muscle insertion found at the time of surgeryhaspreviouslybeenreportedin a child with Crouzon syndrome (characterizedbythetriadofcraniosynostosis,midfacialhypoplasia,and exophthalmos). 4 Our case demonstrates that anomalies of extraocular Muscles may also rarely be present in patients without craniofacial syndromes, and strabismus surgeons should be prepared to modify their surgical plan when anomalous extraocular Muscles are found.
Yuki Morizane - One of the best experts on this subject based on the ideXlab platform.
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risk factors for excessive postoperative exo drift after unilateral lateral Rectus Muscle recession and Medial Rectus Muscle resection for intermittent exotropia
2020Co-Authors: Shin Morisawa, Hiroshi Ohtsuki, Satoshi Hasebe, Ichiro Hamasaki, Kiyo Shibata, Takehiro Shimizu, Reika Kono, Manabu Miyata, Takashi Furuse, Yuki MorizaneAbstract:To detect significant factors associated with excessive postoperative exo-drift in young patients with intermittent exotropia who had undergone unilateral lateral Rectus Muscle recession and Medial Rectus Muscle resection. We retrospectively examined the records of 64 consecutive patients 20 prism diopters). Univariate analysis revealed significant associations between excessive postoperative exo-drift and age at surgery (P = 0.004), preoperative exo-deviation at distance (P = 0.017) and postoperative initial eso-deviation at distance (P < 0.001). Multivariable linear regression analysis showed that postoperative initial eso-deviation at distance (P = 0.008) was significantly associated with postoperative exo-drift. Postoperative exodrift in unilateral RR is predicted by the initial postoperative eso-deviation, which may offset the overcorrection. However, the exo-drift is greater in cases with a large preoperative exo-deviation and/or at a younger age, and should be followed carefully.
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differences in the stability and amount of postoperative exodrift with age after unilateral lateral Rectus Muscle recession and Medial Rectus Muscle resection of intermittent exotropia
2018Co-Authors: Ichiro Hamasaki, Hiroshi Ohtsuki, Satoshi Hasebe, Shin Morisawa, Kiyo Shibata, Takehiro Shimizu, Manabu Miyata, Takashi Furuse, Shinji Toshima, Yuki MorizaneAbstract:We investigated variances in the stability and amount of postoperative exodrift among age groups of intermittent exotropia (XPT) patients who underwent unilateral lateral Rectus Muscle recession and Medial Rectus Muscle resection. We analyzed the cases of 110 consecutive patients who underwent the surgery in 2004-2011, dividing the patients into groups by their age at surgery: <10, 10-19, and ≥20 years. We performed a regression analysis (dependent variable: postoperative exodrift (°); independent variable: number of days post-surgery) using the formula of curve lines. When the tangent line slope was = 0.01 (°/days) for each group, we defined the numbers of days until alignment became stable as the 'stable days.' We evaluated the between-group differences in the amount of exodrift calculated for the stable days. The coefficients and coefficients of determination for the fitting curves were: <10 year group: f(x)=12.2 (1-e-0.0183x) (r2=0.588, p<0.05); 10-19 year group: f(x)=10.0 (1-e-0.0178x) (r2=0.453, p<0.05); ≥20 year group: f(x)=3.40 (1-e-0.0382x) (r2=0.217, p<0.05). There were 389 , 388, and 153 stable days, and the estimated postoperative exodrift with long-term follow-up was 11.5±3.7°, 9.3±4.4°, and 4.1±3.6° for the < 10 year, 10-19 year, and ≥ 20 year groups, respectively (≥20 year vs. other 2 groups, p<0.05). Longer periods and more postoperative exodrift were associated with younger age at surgery. The postoperative evaluation was approx. ≥ 1 year post-surgery in patients aged < 20. These findings may contribute to evaluating XPT's success rate and prognoses.