Superficial radial nerve–lateral antebrachial cutaneous nerve anatomic variation

Davidovich, Eduardo; Nascimento, Osvaldo Jm

doi:10.1002/brb3.195

Cited by 13 publications

(5 citation statements)

References 12 publications

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“…With this anatomical study, there are physical limitations and assumptions that must be made. The superficial nerves found in the area of LI4 are assumed to be primarily the SRN as documented by others (Abrams et al, 1992;Kim, Byun, & Oh, 2014;Robson, See, & Ellis, 2008;Samarakoon et al, 2011); however, there may be a presence of the lateral antebrachial cutaneous nerve (LABCN) in the location of LI4 as well (Beldner et al, 2005;Davidovich & Nascimento, 2014;Im, Im, Kim, Kim, & Park, 2017;Poublon et al, 2015). Although it is a likely possibility, the LABCN may be more involved at other acupoints proximally located on the LIM.…”

Section: Limitationsmentioning

confidence: 89%

Anatomical characterization of acupoint large intestine 4

Casey

2021

The Anatomical Record

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Large intestine 4 (LI4) is a major acupoint used in various treatments in acupuncture and Traditional Chinese Medicine. There are structures associated within the region of LI4 that have three-dimensional anatomical relationship that needs further characterization. The aims of this study were: (a) to observe the anatomical variation of structures around LI4; (b) to observe specific overlap of structures around LI4. A 1256 mm 2 area was dissected in 25 cadaveric hands around LI4. Nondissected areas were marked with pins as reference points. Dissections were photographed with a fixed camera. Subsequently, images were imported to Adobe Photoshop 2020 and analyzed. Descriptive statistics and graphs were compiled using Graphpad Prism 2020. The tributaries of the dorsal venous plexus (22.3%), branches of superficial radial nerve (18.9%), first dorsal interosseous muscle (52.4%), arterial branches in the first interosseous space (10.2%), and deep ulnar nerve (4.0%) were observed in the area of LI4. One branch of the superficial radial nerve passed through LI4. The deep ulnar nerve was found in the bulk of the first dorsal interosseous muscle. Several structures observed intersected at LI4. The superficial radial nerve interweaved with the dorsal venous plexus superficially. The deep ulnar nerve passed anterior to the second palmar metacarpal artery before entering into the first dorsal interosseous muscle. These results provide anatomical evidence and variation into the vascular contributions at LI4.

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Section: Limitationsmentioning

confidence: 89%

Anatomical characterization of acupoint large intestine 4

Casey

2021

The Anatomical Record

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“…However in this case, the terminal branch of the lateral antebrachial cutaneous nerve and the superficial branch of the radial nerve conjointly form the communicative branch in the thumb-index web, which innervate the skin feeling of this region collectively [2]. Therefore, the possibility of having this variation should be taken into consideration when the patient's radial nerve injured completely, for instance humeral midshaft fractures, but sensory function in the thumb-index web remains [3].…”

Section: Introductionmentioning

confidence: 91%

Variation of Median Nerve and Lateral Antebrachial Cutaneous Nerve: A Case Report

Jiang¹,

Leng²,

Si³

et al. 2017

J Neurol Disord

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“…However in this case, the terminal branch of the lateral antebrachial cutaneous nerve and the superficial branch of the radial nerve conjointly form the communicative branch in the thumbindex web, which innervate the skin feeling of this region collectively. Therefore, the possibility of having this variation should be taken into consideration when the patient's radial nerve injured completely, for instance humeral midshaft fractures, but sensory function in the thumbindex web still remains [2]. In addition, when a patient is diagnosed with superficial radial nerve compression and the treatment effect of local block is not obvious, it might be due to the lateral antebrachial cutaneous nerve entrapment [3].…”

Section: Case Reportmentioning

confidence: 99%

Variation of median nerve and lateral antebrachial cutaneous nerve: One case report

Jiang¹,

Leng²,

Si³

et al. 2017

J Syst Integr Neurosci

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During our routine dissection, we observed two variations in an old male cadaver. Firstly, the lateral root and the medial root that form the left median nerve descend in a longer distance than usual and converge into the median nerve trunk, and there is a communicating branch between the two roots. Secondly, the lateral antebrachial cutaneous nerve and the superficial branch of the radial nerve collectively dominate the area of the thumb-index web. This type of variations of the nerves is rare to see and should be considered to interpret atypical clinical presentations and avoid unusual injury during surgery. Case reportTwo anatomic variations are spotted during a dissection of peripheral nerves and vessels, which was conducted on an old male cadaver. The first anatomic variation is spotted at the left median nerve, where the lateral root and the medial root that form the left median nerve descend in a longer distance than usual and converge into the median nerve trunk. A communicating branch is also observed between the two roots. The second variation appears at the distribution of the lateral antebrachial cutaneous nerve, where the lateral antebrachial cutaneous nerve and the superficial branch of the radial nerve collectively dominate the area of the thumb-index web. The discovery of both variations is rare and reports on both at the same time have not been found. This report illustrates the two variations in details and explains the consequences they lead to. It also provides first hand anatomic data and great referential value for the future clinical work.According to the first variation in this case, the two unusually long roots of the left median nerve, the lateral root and the medial root, are emitted from the fasciculus medialis plexus brachialis and the fasciculus lateralis plexus brachialis. According to the measurements during the dissection, the lengths of the two roots are 10.76 cm and 12.05 cm, with diameters 2.44 mm and 2.87 mm respectively. As a result, the two axillary arteries descend and converge into the median nerve trunk in front of the brachial artery. The transverse diameter of the median nerve trunk is 3.66 mm after confluence. It goes down along the meidal bicipital groove with accompany of the brachial artery. In addition, a communicating branch is discovered between the lateral root and the medial root. The communicating branch starts from the medial root and terminates at a distance of 4.52 cm from the starting point of the lateral root. The length of the communicative branch is 4.28 cm, with a transverse diameter of 1.12 mm.There is another variation of distribution of the lateral antebrachial cutaneous nerve in this case. The left musculocutaneous nerve passes through the deep fascia from the lateral biceps tendon and transits to the lateral antebrachial cutaneous nerve. The ateral antebrachial cutaneous nerve has a diameter of 2.20 mm and is distributed under the lateral skin of the forearm. After going down 23.48 cm in distance, the end of the lateral antebrachial cuta...

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Superficial radial nerve–lateral antebrachial cutaneous nerve anatomic variation

Cited by 13 publications

References 12 publications

Anatomical characterization of acupoint large intestine 4

Anatomical characterization of acupoint large intestine 4

Variation of Median Nerve and Lateral Antebrachial Cutaneous Nerve: A Case Report

Variation of median nerve and lateral antebrachial cutaneous nerve: One case report

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