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Multiple muscle surgery recommended for patients with superior oblique palsy displaying large hypertropias
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Multiple muscle surgery was more successful in patients with large primary position hypertropias due to unilateral superior oblique palsy than single-muscle surgery, according to a study.
The study included 45 patients who underwent surgery for primary gaze hypertropia of 20 ∆D or greater.
Patients had a mean age of 33.7 years. The mean postoperative follow-up period was 16 months.
Study results showed the preoperative mean angle of vertical deviation was 26.5 ∆D, compared to 3 ∆D postoperatively (P < .001).
Of the 45 patients, seven had single muscle surgery; 14% achieved successful results, with a mean reduction in hypertropia of 17.3 ∆D.
Fifty-eight percent of patients who underwent multiple muscle surgeries had successful results with a 24.6 ∆D mean reduction in hypertropia.
The authors recommended that patients with large vertical deviations in primary gaze be managed using a combined approach of oblique and vertical rectus muscle surgery.
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