Ultrasound of the Horizontal Rectus Muscle Insertion Sites: Implications in Preoperative Assessment of Strabismus

Tamburrelli, Ciro; Salgarello, Tommaso; Vaiano, Agostino Salvatore; Scullica, L; Palombi, Marino; Bagolini, B

doi:10.1167/iovs.02-0112

Cited by 35 publications

(18 citation statements)

References 20 publications

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“…As mentioned above, the insertions of the MR, IR, LR and SR in this study were located at 5.7 mm, 6.69 mm, 6.94 mm and 7.35 mm from the sclerocorneal limbus, respectively. Results of this study concurred with previous studies [1,8,18,19] and the original measurement by P.J. Tillaux which confirmed that the insertion of the MR was the closest one to the sclerocorneal limbus while the IR, LR and SR insertions progressively became further apart [4] (Table 6).…”

Section: Discussionsupporting

confidence: 91%

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Morphometric study of the extraocular muscles in Thai population

2017

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Morphology of the extraocular muscles plays an important role in many ophthalmological surgeries and diagnostic imaging studies. Detailed understanding of length, width, point of insertion and the relationships between these muscles could be of significance for successful surgical outcomes. Forty- six orbital contents were extracted from formaldehyde-embalmed cadavers. Dissection was performed to reveal the extraocular muscles from their origins to insertions on the sclera. Muscle length, muscle width, distance from point of insertion to the sclerocorneal limbus, relationship between the superior oblique and superior rectus and between the inferior oblique and lateral rectus were measured. The lateral rectus and superior rectus were the longest muscles. The insertion of the medial rectus muscle was closest to the sclerocorneal limbus while the inferior rectus, lateral rectus and superior rectus insertions were progressively further apart. Only the length of the inferior rectus and medial rectus were significantly different between male and female. The distances between the superior oblique and superior rectus and between the inferior oblique and lateral rectus were slightly greater than in previous study. A direct comparison of these parameters between ethnic groups is still needed for an improvement of the procedural outcomes.

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Section: Discussionsupporting

confidence: 91%

“…Comparison of the extraocular muscles insertions [mm] from this study and from four previous studies[1,8,18,19] with…”

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confidence: 99%

Morphometric study of the extraocular muscles in Thai population

2017

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“…Computerized tomography (CT), 2 cine-magnetic resonance imaging, 3 magnetic resonance imaging (MRI), 4 and conventional A-scan ultrasonography [5][6][7] have been used to determine the position of the extraocular muscle within the orbit, but none of these modalities can precisely determine the exact location. Previous studies 5,8 have shown that measurements taken using ultrasound biomicroscopy (UBM) could accurately determine the distances of insertion of the extraocular muscle from the limbus when applied both to unoperated horizontal muscles 8 and to horizontal muscles that had undergone prior surgery.…”

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confidence: 99%

“…5 The purpose of the present study was to evaluate the accuracy of UBM in measuring the distance (in mm) from the limbus to the insertion of vertical rectus muscles (superior rectus and inferior rectus) compared with the "gold standard" (surgical caliper) at the time of surgery. Tamburelli and colleagues 6 showed than conventional B-scan ultrasound can provide better visualization of the insertion site than CT or MRI, but exact measurement is not as accurate as with UBM. 5 The purpose of the present study was threefold: First to evaluate the accuracy of UBM in measuring the distance (in mm) from the limbus to the insertion of vertical rectus muscles (superior rectus and inferior rectus) compared with the "gold standard" (surgical caliper) at the time of surgery.…”

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confidence: 99%

Evaluation of vertical rectus muscles using ultrasound biomicroscopy

Solarte

Smith

Buncic

et al. 2008

Journal of American Association for Pediatric Ophthalmology and

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“…Computed axial tomography, 2 magnetic resonance imaging (MRI), 3,4 cine MRI, 5 and conventional A and B scan ultrasonography 6,7 all have been used to study the size and position of the EOM. None of these modalities can accurately locate the insertion of the EOM to the globe and the insertion distance from limbus.…”

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confidence: 99%