| Supratrochlear nerve | |
|---|---|
 Sensory areas of the head, showing the general distribution of the three divisions of the fifth nerve. (Supratrochlear nerve labeled at upper left.) | |
 Nerves of the orbit. Seen from above. (Supratrochlear nerve visible near top.) | |
| Details | |
| From | Frontal nerve |
| Identifiers | |
| Latin | nervus supratrochlearis |
| TA98 | A14.2.01.024 |
| TA2 | 6203 |
| FMA | 52642 |
| Anatomical terms of neuroanatomy | |
The supratrochlear nerve is a branch of the frontal nerve, itself a branch of the ophthalmic nerve (CN V1) from the trigeminal nerve (CN V). It provides sensory innervation to the skin of the forehead and the upper eyelid.
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Scalp Blocks
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Trigeminal nerve ophthalmic 4
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Supra Orbital Nerve Blocks
Transcription
Structure
Origin
The supratrochlear nerve is the smaller of the two terminal branches of the frontal nerve (the other being the supraorbital nerve).[1] It arises midway between the base and apex of the orbit[2] where the frontal nerve splits into said terminal branches.[1]
Course
The supratrochlear nerve passes medially[3] above the trochlea of the superior oblique muscle.[2][3] It then travels anteriorly above the levator palpebrae superioris muscle.[1] It exits the orbit through the supraorbital notch or foramen.[3] It then ascends onto the forehead beneath the corrugator supercilii muscle and frontalis muscle. It finally divides into sensory branches.[citation needed]
The supratrochlear nerve travels with the supratrochlear artery, a branch of the ophthalmic artery.[2]
Branches
Before exiting the orbit, the supratrochlear nerve emits a descending branch to the infratrochlear nerve.[3][1]
Function
The supratrochlear nerve provides sensory innervation to the skin and conjunctiva of the upper eyelid, and the skin of the inferomedial forehead.[1] It may also provide sensory innervation to part of the periosteum of the frontal bone.[4]
Clinical significance
The supratrochlear nerve may be anaesthetised for surgery of parts of the scalp.[5][6] This can be used for small lesions of the scalp.[5] It can also be used for more extensive injury to the scalp.[6] It is often anaesthetised alongside the supraorbital artery.[5]
Etymology
The supratrochlear nerve is named for its passage above the trochlea of the superior oblique muscle.[2]
Additional images
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Supratrochlear nerve
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Extrinsic eye muscle. Nerves of orbita. Deep dissection.
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Extrinsic eye muscle. Nerves of orbita. Deep dissection.
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Extrinsic eye muscle. Nerves of orbita. Deep dissection.
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Extrinsic eye muscle. Nerves of orbita. Deep dissection.
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Extrinsic eye muscle. Nerves of orbita. Deep dissection.
References
This article incorporates text in the public domain from page 888 of the 20th edition of Gray's Anatomy (1918)
- ^ a b c d e Fillmore, Erin P.; Seifert, Mark F. (2015). "22 - Anatomy of the Trigeminal Nerve". Nerves and Nerve Injuries. Vol. 1: History, Embryology, Anatomy, Imaging, and Diagnostics. Academic Press. pp. 319–350. doi:10.1016/B978-0-12-410390-0.00023-8. ISBN 978-0-12-410390-0.
- ^ a b c d Rea, Paul (2016). "2 - Head". Essential Clinically Applied Anatomy of the Peripheral Nervous System in the Head and Neck. Academic Press. pp. 21–130. doi:10.1016/B978-0-12-803633-4.00002-8. ISBN 978-0-12-803633-4.
- ^ a b c d Standring, Susan (2020). Gray's Anatomy: The Anatomical Basis of Clinical Practice (42nd ed.). New York. p. 782. ISBN 978-0-7020-7707-4. OCLC 1201341621.
{{cite book}}: CS1 maint: location missing publisher (link) - ^ Barral, Jean-Pierre; Croibier, Alain (2009). "15 - Ophthalmic nerve". Manual Therapy for the Cranial Nerves. Churchill Livingstone. pp. 115–128. doi:10.1016/B978-0-7020-3100-7.50018-5. ISBN 978-0-7020-3100-7.
- ^ a b c Kinder Ross, Alison; Bryskin, Robert B. (2011). "16 - Regional Anesthesia". Smith's Anesthesia for Infants and Children (8th ed.). Mosby (imprint). pp. 452–510. doi:10.1016/B978-0-323-06612-9.00016-X. ISBN 978-0-323-06612-9.
- ^ a b Trott, Alexander T. (2012). "6 - Infiltration and Nerve Block Anesthesia". Wounds and Lacerations - Emergency Care and Closure (4th ed.). Saunders. pp. 41–72. doi:10.1016/B978-0-323-07418-6.00006-X. ISBN 978-0-323-07418-6.
External links
- Anatomy figure: 29:02-01 at Human Anatomy Online, SUNY Downstate Medical Center
- MedEd at Loyola GrossAnatomy/h_n/cn/cn1/cnb1.htm
- lesson3 at The Anatomy Lesson by Wesley Norman (Georgetown University) (orbit2)
- cranialnerves at The Anatomy Lesson by Wesley Norman (Georgetown University) (V)
- http://www.dartmouth.edu/~humananatomy/figures/chapter_47/47-2.HTM
This page was last edited on 16 August 2023, at 12:44