Abstract
ABSTRACT Purpose To disclose the precise attachment site of the orbital septum in the lateral canthus. Methods Nine specimens of 7 Japanese cadavers aged 66 to 85 years at death were included. The attachment site of the orbital septum in the lateral canthus was grossly dissected. Two of the 9 specimens were exenterated and used to explore the anatomy from lateral and superior aspects, respectively. Results The orbital septum in the lateral canthus attached slightly lateral to the outer edge of the lateral commissure with the levator aponeurosis and the lower eyelid retractors in the upper and lower regions, respectively. In addition, the orbital septum attached to the arcus marginalis with regard to the orbital bone. Fat tissue occupied the space between the orbital septum and the lateral retinaculum. Conclusion The orbital septum in the lateral canthus attached around the lateral commissure and the orbital rim.
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