A Variant Course of Lateral Root of Median Nerve: Embryological Basis

Nagwani, Mumal; Archana, R; Raghavan, Anita; Chopra, Jyoti; Srivastava, Ajay; Sharma, Pradeep K.

doi:10.3126/ajms.v5i2.8195

Cited by 2 publications

(4 citation statements)

References 5 publications

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“…For [1], the lateral root is more bulky, like us [1,2,3,4,5,6,12] assess that the median nerve is formed by two roots. [14,15] find that the median nerve consists of three branches.…”

Section: Discussionmentioning

confidence: 99%

“…The lateral root is formed of nerve fibers from the C5, C6, C7 nerves, and the fiber mesh root from the C8 and T1 nerves [5]. The median nerve passes the lower part of the axillary region, being laterally disposed on the axillary artery, which it crosses before, and descends on the medial face of the arm, crosses the elbow, descends vertically on the median line of the forearm, passes below the flexor retinas reaching the hand, which is divided into its terminal branches [1,2,3,8].…”

Section: Introductionmentioning

confidence: 99%

“…Keywords: median nerve -anatomical variants its fibers coming from the anterior branches of the cervical rachis, nerves C6, C7, C8) and the first thoracic (T1) [1,2,3,4,5,6,7,8]. The lateral root is formed of nerve fibers from the C5, C6, C7 nerves, and the fiber mesh root from the C8 and T1 nerves [5].…”

Section: Introductionmentioning

confidence: 99%

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Formation, trajectory and distribution variants of the median nerve of the fetus

Tudorache

Bordei

Iliescu

2017

ARS Medica Tomitana

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Our study was performed by dissection on a number of 54 nervous trunks of the median nerve of the fetus. We found that the median nerve is always formed from two roots, their joining being at different levels of the upper limb, between the axilla and the elbow. The axilla nerve trunk was formed at the level of the axillary region, in 38.89% of the cases, in 22.22% of the cases the union was made at the middle part of the arm, and in 38.89% of the cases in the elbow. The lateral root of the medial nerve was formed in 55.56% of cases from a single nerve fascicle, in 44.44% of cases consisting of two nerve fascicles. The medial root was formed in 61.11% of cases from a single nerve fascicle, in 38.89% of the cases being made up of two nerve fascicles. In 27.78% of cases, the medial root passed behind the axillary artery. Regarding the volume of the two roots, we found that in 44.44% of the cases, the lateral root was more voluminous, in 27.78% of cases, the median root was larger and in 27.78% of cases, the two roots were approximately equal. We have encountered situations where a ramification for the forearms muscles emerged from the lateral root. Occasionally, a ram for the brachial muscle was detached from the medial root, and from the lateral root a ram for the biceps muscle, both muscles receiving branches also from the musculocutaneous nerve. We have encountered a single case where the median nerve inches the anterior muscles of the arm, missing the musculocutaneous nerve. In cases of low joining of the roots, we have encountered cases where a lateral root formed a ram for forearm muscles. The

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“…For [1], the lateral root is more bulky, like us [1,2,3,4,5,6,12] assess that the median nerve is formed by two roots. [14,15] find that the median nerve consists of three branches.…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Formation, trajectory and distribution variants of the median nerve of the fetus

Tudorache

Bordei

Iliescu

2017

ARS Medica Tomitana

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“…Nerve variations in the upper limb are important in routine surgery, as they are more prone to injury. They also help in the interpretation of a nervous compression having unexplained clinical symptoms [1]. Anomalies related to the formation, relations and distribution of brachial plexus cords is fairly common.…”

Section: Introductionmentioning

confidence: 99%

Multiple Variations of Lateral Cord of Brachial Plexus and Its Branches in the Arm

Suma¹,

Ariyanachi²,

T³

2016

IJAR

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Variants in brachial plexus and its branches are significant in everyday clinical practice. During student dissection, we came across multiple variations of lateral cord, and its branches on the left arm of a male embalmed cadaver. The lateral cord was found to pierce coracobrachialis which divided into lateral root of median nerve and musculocutaneous. There was a presence of third head of biceps brachii and also communication between median and musculocutaneous nerves. This knowledge with regard to multiple variations is important in nerve blocks, compression syndromes in the axilla and arm as well as flap surgeries. Hence the present case is being reported.

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A Variant Course of Lateral Root of Median Nerve: Embryological Basis

Cited by 2 publications

References 5 publications

Formation, trajectory and distribution variants of the median nerve of the fetus

Formation, trajectory and distribution variants of the median nerve of the fetus

Multiple Variations of Lateral Cord of Brachial Plexus and Its Branches in the Arm

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