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Extended transcaruncular approach using detachment and repositioning of the inferior oblique muscle for the traumatic repair of the medial orbital wall.

ABSTRACT: The fracture of the medial orbital wall is relatively common in orbital trauma. Titanium mesh is possibly the actual standard material for orbital wall reconstruction. When the floor of the orbit and the medial wall are simultaneously affected, one larger mesh gives better results than two independent meshes that need to be fixated independently. However, large meshes need a wider surgical field. To gain sufficient exposure to the medial and inferior orbital walls simultaneously, we present an approach that combines the transconjunctival and transcaruncular incisions, detaching if needed the inferior oblique muscle and, placing our mesh, repositioning it beside the lacrimal duct. This technique should not entirely displace traditional approaches, but it widens the surgical exposure for middle- and upper-third facial trauma. This alternative has minimum morbidity and can save a great deal of surgery time.

SUBMITTER: Rodriguez J

PROVIDER: S-EPMC3052651 | biostudies-other | 2009 Mar

REPOSITORIES: biostudies-other

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Project description:OBJECTIVES: To compare the surgical outcomes of inferomedial wall orbital decompression (IM-OD) and balanced medial plus lateral wall orbital decompression (ML-OD) in patients with inactive Graves’ orbitopathy (GO) with regard to exophthalmos reduction and ocular motility abnormalities. METHODS: Forty-two patients with inactive GO eligible for OD were randomly assigned to either the IM-OD or ML-OD groups. Pre and postoperative evaluations included Hertel exophthalmometry, sensory, and motor extraocular motility assessment, standardized photographs in the nine gaze positions, and computed tomography (CT) of the orbits. ClinicalTrials.gov: NCT03278964. RESULTS: Exophthalmometry reduction was statistically significant in both groups (p<0.001), but was greater in the ML-OD group (p=0.010). New-onset esotropia occurred in 11.1% and 23.5% of patients who underwent IM-OD and ML-OD, respectively, with no statistically significant difference in the frequency of pre and postoperative strabismus in either group. The mean increase in preoperative esotropia was 24±6.9 and 12±8.8 prism diopters in patients who underwent IM-OD and ML-OD, respectively. In the IM-OD group, abduction and elevation worsened at the first (p<0.05) and third (p<0.05) postoperative visits but were restored at 6 months. The versions did not change postoperatively with ML-OD. The preoperative CT-measured medial rectus muscle area predicted new-onset strabismus (p=0.023). Significant postoperative medial rectus muscle enlargement occurred in both groups (p<0.001). Restriction in elevation and abduction was significantly associated with enlarged inferior (p=0.007) and medial rectus muscle areas (p=0.002). CONCLUSIONS: IM-OD is as safe as ML-OD with regard to new-onset strabismus, and represents a good alternative for patients who do not require significant exophthalmos reduction. ML-OD offers greater exophthalmos reduction and smoother postoperative recovery. Patients with preoperative enlarged medial rectus muscle on CT are at risk for new-onset esotropia, and preoperative esotropia is likely to increase after OD.

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Extended transcaruncular approach using detachment and repositioning of the inferior oblique muscle for the traumatic repair of the medial orbital wall.

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