Anatomical variation in the formation and course of median nerve: a cadaveric study

Kumari, K. Lakshmi; Rao, Mkg; Ashalatha, D.; Elena, Gubanova; Sailaja, L. Lakshmi

doi:10.18203/2320-6012.ijrms20150144

Cited by 5 publications

(7 citation statements)

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“…Similarly, four roots were present in 3.75% (7/196) cases with additional roots from both lateral and musculocutaneous nerve. 9 Similar type of observation with trifurcated origin in 26.41% and median nerve with four roots in 1.88% cases was present in study by Laxmi Kumari et al 10 Among the four roots two roots were from lateral cord and two from the me- dial cord. 10 This contradicts our present finding where all the additional roots were given by lateral cord for median nerve with four roots.…”

Section: Discussionsupporting

confidence: 63%

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Variations in formation of median nerve: a cadaveric study

Hada

Kadel²,

Pandit³

et al. 2020

JCMC

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Background: Median nerve is generally formed in axilla, as one of the branch of brachial plexus. It is formed by the union of medial and lateral roots which are the branches of medial and lateral cord respectively. The knowledge of origin, course and area of distribution of median nerve is important for the anatomist, the neurologist and also for correction of traumatic injuries that are related to brachial plexus. The main objective of this study is to observe different variations in median nerve formation in cadavers. Methods: A descriptive cross-sectional study was conducted in 25 formalin fixed adult human cadavers in the Department of Anatomy, KIST Medical College and Teaching Hospital, Lalitpur Ethical approval was taken. Altogether, 50 specimens were enrolled in the study by convenient sampling method. The calculation was done using Statistical Package for Social Sciences version 20 (SPSS). Results: In this study the formation of median nerve was observed to be normal in 78% of the cases. In 20% cases three roots were forming the median nerve and in 2% cases four roots were present. Among these variations in 18% cases the additional roots were observed to be given by the lateral cord of the brachial plexus. Conclusions: This study concludes that most of the median nerve forms in axilla by the union of two roots with few variations.

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Section: Discussionsupporting

confidence: 63%

“…3 In this study 8% of cases presented formation of median nerve in the arm instead of axilla. Laxmi Kumari A et al 10 reported the formation of median nerve in arm in 8.49% cases. Similarly, in another study in 17.3 % cases formation was taking place in the arm.…”

Section: Discussionmentioning

confidence: 99%

Variations in formation of median nerve: a cadaveric study

Hada

Kadel²,

Pandit³

et al. 2020

JCMC

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“…Kurtosis is a measure of the peakedness of the error distribution near a model value. For an ideal normal distribution kurtosis value should be three (mesokurtic) [26][27]. If the kurtosis is less than three, the peak of the error distribution curve is flat (platykurtic) and if the kurtosis is greater than three, the distribution shall have sharp peak (leptokurtic).…”

Section: Resultsmentioning

confidence: 99%

Speciation of Binary Complexes of Cd(II) with L-Asparagine in Ethylene Glycol Medium

2017

IJMTER

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Abstract-The formation constants of binary complexes of Cd(II) with L-Asparagine in (0-50% v/v) Ethylene Glycol-water mixtures were determined pH metrically at 303.0 K and an ionic strength of 0.16 molL -1 . The existence of various binary complexes was established from modeling studies using the computer program MINIQUAD75. The best fit chemical models were arrived at based on the statistical parameters like crystallographic R factor and sum of squares of residuals in mass-balance equations. The models for the binary species contained, ML2 ML 2 H and ML2H2 in Ethylene glycol -water mixtures. The trend in the variation of stabilities of binary complexes with change in the dielectric constant of the medium was explained based on electrostatic and non-electrostatic forces. The distribution diagrams of the complex species are also presented.

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“…Several signaling molecules and transcription factors have been identified, which induce the differentiation of the dorsal and ventral motor horn cells. Misexpressions of any of these signaling molecules can lead to abnormalities in the formation and distribution of particular nerve fibres 1,2,11,12 .…”

Section: Discussionmentioning

confidence: 99%

“…No branches of median nerve are found in the arm. 11 Similarly Musculocutaneous nerve is a branch of lateral cord pierce the coracobrachialis and gives branches which supplies all the muscles of arm.…”

Section: Introductionmentioning

confidence: 99%

Anatomical study of Variations of Median Nerve and Musculocutaneous Nerve in the Arm

Rashmi C Goshi

2020

IJPHRD

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Background:The variations related to the median nerve and musculocutaneous nerve are relatively less common. The variations may have potential clinical implications especially during surgeries and nerve blocks. Materials and Method:The routine dissection of 50 adult cadavers including 42 males and 8 females in the Department of Anatomy during undergraduate training was carried out to detect the variations in the structure, formation and relation of Median nerve and musculocutaneous nerve.Results and Findings: There was a variation observed in the formation of median nerve in three adult cadavers. In three male cadaver, there was unilateral variation in the formation of the median nerve by more than two roots . However, in each of these cadavers the distribution of the median nerve was normal in arm, forearm and palm. There was normal pattern of formation, relation and course of Median nerve in rest of the cadavers. Absence of musculocutaneous nerve, and nerve not piercing coracobrachialis, and communication between median and musculocutaneous nerve was found. Photographs of abnormalities were taken for proper documentation of the variations. Conclusion:These variations have been explained by some embryological flats available. These variations of formation of median nerve are clinically important for physicians, surgeons and anesthetists because symptoms of median nerve compression due to these variations are often confused with radiculopathy and carpal tunnel syndrome. The knowledge of variations of musculocutaneous nerve is important to the surgeons and anesthetists' for carrying out surgical procedures and nerve blocks in axilla and arm.

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Anatomical variation in the formation and course of median nerve: a cadaveric study

Cited by 5 publications

References 1 publication

Variations in formation of median nerve: a cadaveric study

Variations in formation of median nerve: a cadaveric study

Speciation of Binary Complexes of Cd(II) with L-Asparagine in Ethylene Glycol Medium

Anatomical study of Variations of Median Nerve and Musculocutaneous Nerve in the Arm

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