Anatomic Study of the Infraorbital Foramen for Radiofrequency Neurotomy of the Infraorbital Nerve

Rahman, Maryam; Richter, Erich O.; Osawa, Shigeyuki; Rhoton, Albert L.

doi:10.1227/01.neu.0000336327.10368.79

Cited by 26 publications

(42 citation statements)

References 32 publications

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“…Another landmark that can be used is the facial midline. The IOF lies at an average distance of 26–27.20 mm from the facial midline (Table ) (Chung et al, ; Aziz et al, ; Cutright et al, ; Rahman et al, ). The average distance recorded in our study was consistent with these reports.…”

Section: Discussionmentioning

confidence: 99%

Anatomical study of the infraorbital foramen

et al. 2015

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Detailed knowledge of variations of the infraorbital foramen (IOF) and the establishment of a constant reference point for needle insertion are important for safe and successful regional block and for avoiding iatrogenic injury to the nerve during surgery in the midfacial region. Infraorbital foramina from 133 sides of 67 dry intact adult skulls of undetermined gender were examined for variations in shape, number, location in relation to bony landmarks, and relationship to the maxillary teeth. The angles of needle insertion in the sagittal and Frankfurt planes were determined. The infraorbital foramina were located at an average distance of 6.33 ± 1.39 mm below the infraorbital margin, 25.69 ± 2.37 mm from the median plane, 15.19 ± 1.70 mm from the lateral margin of the piriform aperture, and 28.41 ± 2.82 mm above the maxillary alveolar border. The average angles of needle insertion through the IOF with the sagittal and Frankfurt planes were 21.14° ± 10.10° and 31.79° ± 7.68°, respectively. Multiple foramina were found in 21% of the hemi-skulls. The foramen was less than 2 mm in size in 23.31% of the hemi-skulls. The position of the IOF with respect to the maxillary teeth varied from the interval between the canine and first premolar to the first molar, but in half of the specimens it lay in line with the second maxillary premolar tooth. The observations made in this study should be useful for planning infraorbital nerve block or surgery around the IOF.

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Section: Discussionmentioning

confidence: 99%

Anatomical study of the infraorbital foramen

et al. 2015

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“…Several treatments have been suggested for PHN, including medication, botulinum toxin injections, nerve blocks, peripheral nerve stimulation, surgical intervention, pulsed radiofrequency treatment (PRFT) [4], and radiofrequency ablation [5]. Nerve localization for mental nerve block ideally relies on a landmark-based approach by palpating the foramina.…”

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confidence: 99%

Ultrasound-Assisted Mental Nerve Block and Pulsed Radiofrequency Treatment for Intractable Postherpetic Neuralgia: Three Case Studies

Park

Kim

et al. 2014

Korean J Pain

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Postherpetic neuralgia (PHN) is one of the most difficult pain syndromes to treat. Invasive treatments may be considered when patients fail to obtain adequate pain relief from noninvasive treatment approaches. Here, we present three cases of PHN in the mandibular branch treated with ultrasound-assisted mental nerve block and pulsed radiofrequency treatment. None of the patients had adequate pain relief from the medical therapy, so we performed the mental nerve block on the affected side under ultrasound assistance. Two patients showed satisfactory pain relief continuously over 12 months without any further interventions, whereas one patient only had short-term pain relief. For the patient had short-term pain relief we performed pulsed radiofrequency treatment (PRFT) on the left mental nerve under ultrasound assistance. After PRFT, the patient had adequate pain relief for 6 months and there was no need for further management. (Korean J Pain 2014; 27: 81-85)

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“…1,2 The location of the infraorbital foramen has been examined in some anthropometric studies. 1,[3][4][5][6][7][8][9][10][11][12][13] Although the vertical position is often measured from the inferior orbital rim, 1,3,5-9 various reference points have been used to determine its horizontal location. These include the facial midline (intermaxillary suture), 3-8 the caudal end of the nasal bone, 6,9 the anterior nasal spine, 10 the supraorbital notch, 4 and the mental foramen.…”

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confidence: 99%