Autogenous orbital reconstruction in a child with congenital abnormalities of the orbital roof and vertical orbital dystopia

A Simplified Approach for Surgical Correction of Vertical Orbital Dystopia: A 45-Year Retrospective Cohort Study

BACKGROUND

Vertical orbital dystopia (VOD) results in significant facial asymmetry, psychological distress, and poor quality of life in affected patients. The traditional approach (TA) for surgical correction has entailed a standard frontal craniotomy along with circumferential orbital osteotomy, vertical translocation of the orbit, and bone grafting to the lower maxilla. Caution has been expressed regarding its invasive transcranial nature. In this report, the authors describe the limited approach (LA) for simplified surgical correction of VOD, which obviates the need for a standard frontal craniotomy.

METHODS

A 45-year retrospective review was conducted of all patients who underwent surgical correction of VOD, as performed by a single surgeon. Demographic details, procedural characteristics, and complications were compared between patients who underwent correction by the TA and those who underwent correction by the LA. Complications were defined as cerebrospinal fluid leak, infection of the frontal bone, permanent diplopia, permanent ptosis, sudden-onset vision loss, persistent asymmetry, and surgical revision.

RESULTS

Forty patients met inclusion criteria for correction of true VOD, of which 18 underwent the TA and 22 underwent the LA. Mean length of hospital stay was 5.3 ± 2.3 days and 4.0 ± 1.5 days for the TA and LA cohorts, respectively. Mean follow-up time was 4.9 ± 7.5 years for the TA cohort and 2.6 ± 3.3 years for the LA cohort. The only reported complications were persistent asymmetry in 2 patients in the TA cohort, with 1 patient requiring surgical revision because of undercorrection, whereas the LA cohort exhibited no postoperative asymmetry or need for surgical revision.

CONCLUSIONS

Both the TA and the LA are effective for surgical correction of VOD. The limited craniotomy of the LA reduces exposure of intracranial structures and adequately achieves postoperative symmetry.

CLINICAL QUESTION/LEVEL OF EVIDENCE

Therapeutic, III.

The Management of Orbital Roof Fractures and Defects: A Review

PURPOSE

To explore the anatomy, etiopathogenesis, diagnosis and classification, current evidence on intervention and the surgical management of orbital roof fractures and defects (ORFD) for oculoplastic surgeons presented with such cases.

METHODS

A review of the current literature through the MEDLINE database using the following search terms: "orbital roof fracture (+treatment/management)," "orbital roof defect (+treatment/management)," "orbital roof erosion (+treatment/management)," "orbital roof repair," "orbital roof," "orbital fracture," "pediatric orbital roof (defect/fracture/erosion)," "orbital anatomy," and "orbital roof anatomy" was conducted. As relatively little has been published on this topic, inclusion criteria were broad and peer-reviewed articles judged to be of clinical importance, relevant to the aims of this review, were included. Non-English abstracts were also included if relevant. Year of publication was not a strict exclusion criterion, and older articles were judged for their suitability based on clinical importance and relevance to current practice. Additional references were obtained from citations in key articles and recommendations from the coauthors based on their areas of expertise.

RESULTS

The etiopathogenesis of ORFD varies. Classification systems have been formulated to guide management decisions and can range from conservative management to complex neurosurgery. Eyelid approaches have also been described. This review provides a summary of the evidence for each and a management framework oculoplastic surgeons can use when presented with ORFD.

CONCLUSION

Oculoplastic surgeons can be involved, either alone or as part of a multidisciplinary team, in the management of ORFD, and for some, conduct orbital approach reconstructive surgery.

Diagnostic analysis of vertical orbital dystopia and canthal tilt for surgical correction

Objectives

We sought to identify a clinically useful method of analyzing orbital dystopia to aid in diagnosis and treatment planning and to quantify vertical discrepancies in eye level and variations in canthal tilt in Koreans.

Patients and Methods

In 76 Korean patients with a mean age of 23.12 years, mean differences in the level of the pupils, lateral canthi, medial canthi, and canthal tilt were measured. The difference in pupil level was calculated from the perpendicular lines drawn from the midpupil area of each eye to the midline of the face to determine the amount of skeletal discrepancy of the eye. Soft tissue discrepancies were determined according to the vertical difference between the lines drawn from the lateral or medial canthus of each eye perpendicular to the midline of the face. The canthal tilt was determined from the inclination of a line connecting the lateral and medial canthi, then classified as class I, II, or III.

Results

Mean differences in pupil level, medial canthi, and lateral canthi were 1.57±1.10 mm, 1.14±1.07 mm, and 2.03±1.64 mm, respectively. The mean degree of canthal tilt were 8.45°±3.53° for the right side and 8.42°±3.81° for the left side. No study participants presented with class III canthal tilt. The mean canthal tilt values for those with class I tilt were 3.21°±1.68° for the right side and 3.18°±1.63° for the left side, while, for those who had class II tilt, the values were 9.60°±3.66° for the right side and 9.54°±2.99° for the left side.

Conclusion

The presented diagnostic method of orbital dystopia can be used to effectively establish a treatment plan that takes into consideration the patient's skeletal and soft-tissue discrepancies.