scholarly journals Bilateral communication between musculocutaneous nerve and median nerve - a case report

2012 ◽  
Vol 01 (02) ◽  
pp. 096-098
Author(s):  
Dhanalakshmi V. ◽  
Santhi B. ◽  
Suba Ananthi K.
Keyword(s):  
Case Report ◽  
Median Nerve ◽  
Adult Male ◽  
Musculocutaneous Nerve ◽  
Communicating Branch ◽  
Male Cadaver ◽  
The Right

AbstractDuring routine dissection of an adult male cadaver, we observed bilateral communication between musculocutaneous nerve and median nerve. The level of origin of the communicating branch from musculocutaneous nerve was different in both arms. In left arm it arose before piercing coracobrachialis and in the right arm after piercing it. It is important to be aware of this variation while planning a surgery in the region of arm, as these nerves are more liable to be injured during operations. Any compression over the communicating branch may give rise to varying patterns of weakness that may impose difficulty in diagnosis for the neurologists.

scholarly journals Formation of median nerve by three roots: A case report

1970 ◽  
Vol 6 (1) ◽  
pp. 47-50 ◽  
Author(s):  
N Satyanarayana ◽  
CK Reddy ◽  
P Sunitha ◽  
N Jayasri ◽  
V Nitin ◽  
...  
Keyword(s):  
Case Report ◽  
Brachial Plexus ◽  
Key Words ◽  
Median Nerve ◽  
Adult Male ◽  
Upper Limbs ◽  
Medical Sciences ◽  
Lateral Cord ◽  
Male Cadaver ◽  
The Right

During routine dissection of an adult male cadaver in the Department of Anatomy, College of Medical Sciences, Bharatpur, Nepal, the right median nerve was found to be formed by three roots. The finding was noted after thorough and meticulous dissection of the upper limbs of both sides (axilla, arm, forearm and palm). Out of the three roots forming the anomalous median nerve, two were from lateral cord and one from medial cord of brachial plexus. However, the distribution of the anomalous median nerve was normal in arm, forearm and palm. The arterial pattern in the arm (axillary and brachial arteries) was also normal. Key words: Cadaver; median nerve; brachial plexus DOI: 10.3126/jcmsn.v6i1.3602 Journal of College of Medical Sciences-Nepal, 2010, Vol. 6, No. 1, 47-50

scholarly journals Third Head of the Biceps Brachii Muscle and a Communication between the Musculocutaneous and Median Nerves: A Case Report

2019 ◽  
Vol 36 (01) ◽  
pp. 051-054
Author(s):  
Caroline Dussin ◽  
Lucas Moyses ◽  
Sávio Siqueira
Keyword(s):  
Case Report ◽  
Biceps Brachii ◽  
Anatomical Variations ◽  
Clinical Implications ◽  
Biceps Brachii Muscle ◽  
Present Case Report ◽  
Communicating Branch ◽  
Brachialis Muscle ◽  
Male Cadaver ◽  
The Right

AbstractMany authors have reported and classified several anatomical variations between the musculocutaneous (Mc) and median (Me) nerves, regarding their origin, number, and proximity with the coracobrachialis muscle. There also are, in the scientific community, records classifying the origin of supernumerary heads of the biceps brachii muscle. However, the occurrence of both aforementioned variations in the same arm is very uncommon. During a routine dissection of the right upper limb of a male cadaver, a third head of the biceps brachii was found originating from the fibers of the brachialis muscle, as well as a communicating branch between the Mc and the Me nerves, in the same limb. The objective of the present case report is to describe these multiple variations found, relating them and discussing their relevant clinical implications.

scholarly journals Absence of the musculocutaneous nerve: a rare anatomical variation with possible clinical-surgical implications

2008 ◽  
Vol 126 (5) ◽  
pp. 288-290 ◽  
Author(s):  
José Humberto Tavares Guerreiro Fregnani ◽  
Maria Inez Marcondes Macéa ◽  
Celina Siqueira Barbosa Pereira ◽  
Mirna Duarte Barros ◽  
José Rafael Macéa
Keyword(s):  
Median Nerve ◽  
Lateral Surface ◽  
Biceps Brachii ◽  
Anatomical Variation ◽  
Musculocutaneous Nerve ◽  
The Third ◽  
Brachialis Muscle ◽  
Male Cadaver ◽  
The Right ◽  
Unknown Case

CONTEXT: The musculocutaneous nerve is one of the terminal branches of the lateral fasciculus of the brachial plexus, and is responsible for innervation of the flexor musculature of the elbow and for skin sensitivity on the lateral surface of the forearm. Its absence has been described previously, but its real prevalence is unknown. CASE REPORT: A case of absence of the musculocutaneous nerve that was observed during the dissection of the right arm of a male cadaver is described. The area of innervation was supplied by the median nerve. From this, three branches emerged: one to the coracobrachialis muscle, another to the biceps brachii muscle and the third to the brachialis muscle. This last branch continued as a lateral antebrachial cutaneous nerve. This is an anatomical variation that has clinical-surgical implications, considering that injury to the median nerve in this case would have caused unexpected paralysis of the flexor musculature of the elbow and hypoesthesia of the lateral surface of the forearm.

scholarly journals Absence of musculocutaneous nerve and accessory head of biceps brachii: a case report

2005 ◽  
Vol 38 (02) ◽  
pp. 114-146
Author(s):  
L Arora ◽  
R Dhingra
Keyword(s):  
Case Report ◽  
Median Nerve ◽  
Upper Limb ◽  
Biceps Brachii ◽  
Musculocutaneous Nerve ◽  
Nerve Supply ◽  
Biceps Brachii Muscle ◽  
Nerve Roots ◽  
Lateral Cutaneous Nerve ◽  
The Right

ABSTRACTDuring dissection of a 55-year-old female cadaver, we observed that three nerve roots contributed to the formation of Median nerve in her right upper limb. Along with this variation, absence of Musculocutaneous nerve was noticed. The muscles of front of arm i.e. Biceps Brachii, Brachialis and Coracobrachialis received their nerve supply from Median nerve. The Lateral cutaneous nerve of forearm was derived from Median nerve. Also an accessory head of Biceps Brachii muscle was present in the right arm of the same cadaver. It is extremely important to be aware of these variations while planning a surgery in the region of axilla or arm as these nerves are more liable to be injured during operations.

scholarly journals Unilateral variant motor innervations of flexure muscles of arm

2010 ◽  
Vol 01 (01) ◽  
pp. 51-53 ◽  
Author(s):  
A S Yogesh ◽  
M Joshi ◽  
V K Chimurkar ◽  
R R Marathe
Keyword(s):  
Median Nerve ◽  
Biceps Brachii ◽  
Musculocutaneous Nerve ◽  
Cutaneous Nerve ◽  
Lateral Cord ◽  
Separate Branch ◽  
Male Cadaver ◽  
Lateral Cutaneous Nerve ◽  
Muscular Branch ◽  
The Right

ABSTRACTThe musculocutaneous nerve usually branches out from the lateral cord of brachial plexus. It innervates the corcobrachialis, biceps brachii and brachialis muscles and continues as the lateral cutaneous nerve of forearm without exhibiting any communication with the median nerve or any other nerve. We report unilateral variation in motor innervations of the left arm in a 58-year-old male cadaver. The musculocutaneous nerve was found to be absent. A muscular branch of the median nerve was supplying the coracobrachialis muscle. In the middle of arm, the median nerve was found to be branching out, bifurcating and supplying the long and short head of biceps. The median nerve was found to be giving a separate branch, which supplied the brachialis muscle and continued as the lateral cutaneous nerve of forearm. The right sided structures were found to be normal. Surgeons should keep such variations in mind while performing arm surgeries.

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

2013 ◽  
Vol 5 (2) ◽  
pp. 146-150
Author(s):  
Mumal Nagwani ◽  
Archana Rani ◽  
Anita Rani ◽  
Jyoti Chopra ◽  
Ajai Kumar Srivastava ◽  
...  
Keyword(s):  
Median Nerve ◽  
Lateral Root ◽  
Medical Science ◽  
Science Volume ◽  
Musculocutaneous Nerve ◽  
Male Cadaver ◽  
The Right

During routine dissection of the right arm of 50 year old male cadaver, we observed that the lateral root of median nerve was piercing the coracobrachialis muscle before joining the medial root of median to form the median nerve. The lateral root of median nerve did not give any branch within the muscle and no communication was observed between musculocutaneous nerve and lateral root of median nerve within the coracobrachialis muscle or in the later course of these two nerves. The same muscle was being pierced by musculocutaneous nerve which was giving branches to the muscle. These variations are important for the anesthetists, surgeons, neurologists during surgery and anatomists during dissection in the region of axilla. DOI: http://dx.doi.org/10.3126/ajms.v5i2.8195 Asian Journal of Medical Science, Volume-5(2) 2014: 146-150  

scholarly journals Anatomical Variations of the Musculocutaneous and Median Nerves: A Case Report

Folia Medica ◽  
2019 ◽  
Vol 61 (2) ◽  
pp. 327-331 ◽  
Author(s):  
Marzieh Darvishi ◽  
Ardeshir Moayeri
Keyword(s):  
Median Nerve ◽  
Biceps Brachii ◽  
Anatomical Variations ◽  
Musculocutaneous Nerve ◽  
Upper Extremities ◽  
Terminal Branch ◽  
Lateral Cord ◽  
Pectoralis Minor ◽  
Male Cadaver ◽  
The Right

Abstract The musculocutaneous nerve is a large terminal branch of the lateral cord of the brachial plexus. It passes under the pectoralis minor and penetrates the coracobrachialis muscle, descending between the biceps brachii and brachialis muscles in the arm. After dissection in upper extremities in a 28-year-old male cadaver, the median and musculocutaneous nerve were found to have variations on the right side where the musculocutaneous nerve formed communications with the median nerve. The median nerve innervated muscles of the front of the arm in this cadaver. In addition, the musculocutaneous nerve did not pierce the coracobrachialis muscle on the right side. Knowledge of these variations is extremely important when planning a surgery in the region of axilla.

scholarly journals COMMUNICATION BETWEEN THE MUSCULOCUTANEOUS AND MEDIAN NERVE: OCCURRENCE ON BOTH SIDES

2011 ◽  
Vol 01 (04) ◽  
pp. 55-56
Author(s):  
Remya K. ◽  
Ashwin Krishnamurthy ◽  
Kavitha K.
Keyword(s):  
Graduate Students ◽  
Median Nerve ◽  
Surgical Repair ◽  
Coracoid Process ◽  
Musculocutaneous Nerve ◽  
Upper Arm ◽  
Medical Academy ◽  
Communicating Branch ◽  
Male Cadaver ◽  
Entrapment Syndromes

AbstractCommunications between musculocutaneous nerve and median nerve may be of considerable significance to neurologists and orthopaedicians when dealing with patients of nerve entrapment syndromes of the upper limb. Many authors have mentioned about an occurrence of such a variation previously, but the presence of a communication between the two nerves in both the arms has not been cited to the best of our knowledge. During routine dissection on a 72 year old male cadaver for the under graduate students in the Department of Anatomy at K.S. Hegde Medical Academy, we encountered an anomalous communication between musculocutaneous and median nerve in both the upper limbs. The communicating branch arose from the musculocutaneous nerve at a distance of 12.6 cm and 12.5 cm from the tip of coracoid process on right and left side and joined the median nerve 16.2 cm from the same bony point. Communications between nerves like this may explain abnormal debilities in certain cases of trauma of the upper arm. Lack of awareness of such variations with different patterns of communications between musculocutaneous and median nerve might complicate surgical repair of the nerves.

scholarly journals Anatomical Variation of a Communicating Branch between the Musculocutaneous and the Median Nerve: A Case Report

2020 ◽  
Vol 49 (1) ◽  
pp. 71
Author(s):  
Dimosthenis Chrysikos ◽  
Andreas Athanasopoulos ◽  
Panagiotis Georgakopoulos ◽  
Ioannis Antonopoulos ◽  
Alexandros Samolis ◽  
...  
Keyword(s):  
Case Report ◽  
Brachial Plexus ◽  
Clinical Significance ◽  
Anatomical Variation ◽  
Anatomical Variations ◽  
Clinical Findings ◽  
Minimal Invasive ◽  
Musculocutaneous Nerve ◽  
Communicating Branch ◽  
Male Cadaver

<p><strong>Objective</strong>. The aim of our paper is to depict an anatomical variation of the brachial plexus, concerning a communicating branch between the median and the musculocutaneous nerve and its clinical significance. Anatomical variations of the brachial plexus and especially those of the musculocutaneous nerve are quite common. Awareness of these variations is of paramount importance in clinical practice, mainly in achieving best results in minimal invasive or surgical procedures.</p><p><strong>Case Report</strong>. After dissection in upper extremities in a 89-year-old male cadaver, a communicating branch between the median and the musculocutaneous nerve was found. This communicating branch was formed before the musculocutaneous nerve perforated the coracobrachialis muscle. It also derived from the level of the ansa medianis and its course was of an approximately 2cm length.</p><p><strong>Conclusion</strong>. The clinical significance of our study is the entrapment of the musculocutaneous nerve that may cause clinical findings similar to those of the carpal tunnel syndrome.</p>

A rare variation in the formation of the lower trunk of the brachial plexus its embryological basis and clinical importance - a case report

2012 ◽  
Vol 6 (4) ◽  
pp. 49-52
Author(s):  
N Satyanarayana ◽  
R Guha ◽  
P Sunitha ◽  
GN Reddy ◽  
G Praveen ◽  
...  
Keyword(s):  
Case Report ◽  
Brachial Plexus ◽  
Upper Limb ◽  
Clinical Importance ◽  
Medical Sciences ◽  
Nerve Roots ◽  
Rare Variation ◽  
Lower Trunk ◽  
Male Cadaver ◽  
The Right

Brachial plexus is the plexus of nerves, that supplies the upper limb.Variations in the branches of brachial plexus are common but variations in the roots and trunks are very rare. Here, we report one of the such rare variations in the formations of the lower trunk of the brachial plexus in the right upper limb of a male cadaver. In the present case the lower trunk was formed by the union of ventral rami of C7,C8 and T1 nerve roots. The middle trunk was absent. Upper trunk formation was normal. Journal of College of Medical Sciences-Nepal,2011,Vol-6,No-4, 49-52 DOI: http://dx.doi.org/10.3126/jcmsn.v6i4.6727

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