Family Friendly & Specialty Dentists in London, UK
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Structure and Anatomy
- The frontal nerve is a branch of the ophthalmic nerve (V), which is a branch of the trigeminal nerve (CN V).
- The frontal nerve branches before entering the superior orbital fissure and travels superolateral to the annulus of Zinn.
- It divides into two branches, the supratrochlear nerve and supraorbital nerve.
- Nerves of the orbit: The frontal nerve branches from the ophthalmic nerve.
- Superior view of a dissection of the orbit: The frontal nerve branches into the supratrochlear and supraorbital nerves.
- Superior view of a dissection of the orbit: An instrument is inserted between the frontal nerve and the levator palpebrae superioris.
Functions
- The frontal nerve provides sensory innervation to the skin of the forehead, upper eyelid, and mucosa of the frontal sinus.
- It plays a role in transmitting sensory information from these areas.
- Sensory innervation helps with perception and protection of these regions.
Clinical significance
- The frontal nerve can be affected by schwannoma, a benign nerve tumor.
- Schwannoma can affect the myelin sheath of the frontal nerve and may occur between the superior orbital fissure and the supraorbital foramen.
- It can cause damage to the adjacent orbital part of the frontal bone.
- Distinctive radiological features of orbital frontal nerve schwannoma can be identified through imaging techniques like CT scan or MRI.
- Orbital cystic schwannoma originating from the frontal nerve has also been reported in a case study.
Additional images
- These images provide visual representations of the frontal nerve and its branches.
- They help in understanding the anatomical relationships and structures involved.
References
- Gray's Anatomy: The anatomical basis of clinical practice by Susan Standring is a comprehensive reference.
- Young, S. M., Kim, Y. D., Jeon, G. S., & Woo, K. I. (2018) published an article on distinctive radiological features of orbital frontal nerve schwannoma.
- Hayashi, Y., Watanabe, T., Kita, D., Hayashi, Y., Takahira, M., & Hamada, J. I. (2012) reported a case of orbital cystic schwannoma originating from the frontal nerve.
- These references provide further information and research on the frontal nerve, contributing to the understanding of its structure, functions, and clinical significance.
