Formation of median nerve from single root on left side and communicating branch from median nerve to musculocutaneous nerve on right side

Morphologie ◽  
2012 ◽  
Vol 96 (313) ◽  
pp. 51-54 ◽  
Author(s):  
S.T. Patil ◽  
M.M. Meshram ◽  
A.P. Kasote ◽  
N.Y. Kamdi
Keyword(s):  
Median Nerve ◽  
Musculocutaneous Nerve ◽  
Single Root ◽  
Communicating Branch

scholarly journals A Study on Incidence of Communicating branch between Musculocutaneous Nerve and Median Nerve

2021 ◽  
Vol 9 (2.1) ◽  
pp. 7936-7941
Author(s):  
T Naveen Sagar ◽  
◽  
M Venkata Raga Mayuri ◽  
Anshu Sharma ◽  
Rajat Subhra Das ◽  
...  
Keyword(s):  
Median Nerve ◽  
Digital Camera ◽  
The Body ◽  
Musculocutaneous Nerve ◽  
Surgical Approaches ◽  
Upper Limbs ◽  
Average Percentage ◽  
Communicating Branch ◽  
Study Results ◽  
Human Cadavers

Introduction: In present day Surgical practice it is mandatory to have a detailed idea of basic Anatomy and possible variations from normal pattern of all the major nerves and vessels in the body. One such important nerve in the body is Musculo Cutaneous nerve which is the chief nerve supplying the muscles of the front of the arm and also supplies the skin of lateral aspect of forearm. In the present study undertaken 58 upperlimbs were dissected and the incidence of communicating branch between Musculocutaneous Nerve and Median Nerve was studied. Aims and Objectives: The study is undertaken to know the incidence of communicating branch between Musculocutaneous Nerve and Median Nerve and its importance in surgical approaches of the upper limb. Materials and Methods: Under aseptic precautions, Standard dissection procedures were followed to dissect out the Musculocutaneous nerves and Median nerves in the 58 upper limbs of both right and left sides in the human cadavers of both sexes and the incidence of communicating branch between Musculocutaneous Nerve and Median Nerve were studied in detail and images were taken with digital camera for proper presentation of the study. Results and Conclusion: In the present study undertaken 7 upper limbs (12 percent) out of 58 upper limbs dissected showed the presence of communicating branch between Musculocutaneous nerve and Median nerve which comes under the category of type II of choi et al classification. on an average percentage of incidence of communicating branch between Musculocutaneous nerve and Median nerve varies between 10 percent to 53 percent. KEY WORDS: Musculocutaneous nerve, Median nerve and communication between Musculocutaneous nerve and median nerve.

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

2017 ◽  
Vol 23 (3) ◽  
pp. 142-149
Author(s):  
I. S. Tudorache ◽  
P. Bordei ◽  
D. M. Iliescu
Keyword(s):  
Median Nerve ◽  
Ulnar Nerve ◽  
Upper Limb ◽  
Lateral Root ◽  
Axillary Artery ◽  
Single Case ◽  
Musculocutaneous Nerve ◽  
Single Nerve ◽  
Nerve Fascicle ◽  
Medial Nerve

AbstractOur 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 anastomoses between the two median nerve roots can sometimes be located just above their union or anterior to the lower portion of the axillary artery. In one case, we encountered between the two roots, above their union, the existence of three oblique anastomoses, the two upper ones from the lateral to the medial root, and the third from the medial root to the lateral root. Common are anastomoses between the roots of the roots and the root on the opposite side. The most common are the anastomosis between the medial fascicle of the lateral root and the medial root of the median nerve. In one case, we encountered a double overlap between the musculocutaneous nerve and the lateral nerve root. In one case, we encountered a strong anastomosis between the medial nerve fascicle of the medial root and the radial nerve. Common and at all levels of the upper limb are the anastomoses between the median and ulnar nerves. In the case of a low union of the two median roots, we encountered anastomoses between a root of the root and the ulnar nerve, or between a root and the ulnar nerve. I encountered a single case with an anastomosis, Martin- Gruber, which was previously passing through the ulnar and interos-like arteries and from which the anterior forearm muscles were detached.

scholarly journals Lower level of formation of lateral cord, variable formation of median nerve and communications between median and musculocutaneous nerve

2014 ◽  
Vol 5 (9) ◽  
pp. 464
Author(s):  
Gangadhara Muninarayana Swamy ◽  
Shakunthala Rao N ◽  
Krishna Kishore G ◽  
Manivannan K ◽  
H. R. Krishna Rao
Keyword(s):  
Median Nerve ◽  
Musculocutaneous Nerve ◽  
Lateral Cord

scholarly journals Variations in the course and branching pattern of musculocutaneous nerve

2013 ◽  
Vol 02 (04) ◽  
pp. 195-199
Author(s):  
Amar Jayanthi A. ◽  
Arunkumar K G.
Keyword(s):  
Median Nerve ◽  
Growth Cone ◽  
Single Case ◽  
Clinical Importance ◽  
Anatomical Variations ◽  
Musculocutaneous Nerve ◽  
Axonal Pathfinding ◽  
Chi Square ◽  
Medical College ◽  
Chi Square Test

Abstract Background and aim: The variations in the course and communicating branches of musculocutaneous nerve is of clinical importance in the treatment of recurrent compression neuropathies and in the diagnosis of median nerve lesions. Most of the reports on anatomical variations of musculocutaneous nerve are single case studies and such studies with emphasis on gender difference in a sample of Keralite population are rarely reported. The objective of the present study is to observe the variations in the course of musculocutaneous nerve with special reference to communications with other nerves of the arm and to study the correlation between gender and variations of the nerve. Materials and Methods: Two hundred and sixty four arms were dissected in the department of Anatomy, Government medical college, Thrissur and studied for variations of muculocutaneous nerve. Analysis was done with epi info, using proportions, confidence interval and Chi Square test. The communications noted were classified using the available classifications of Le Minor, Venieratos and Anagnostopoulou and Choi et al. Results: Nerve variations were seen in 24.2 % cases which include, absence of the nerve (3.4%), nerve not piercing coracobrachialis (12.4%) and communication to median nerve (15.1 %). All the variations observed were statistically not significant. The embryological basis for the axonal pathfinding is considered as a result of both guidance molecules and electrical activity that change the calcium homeostasis within the growth cone to regulate growth cone turning. Conclusion: Variations that were observed in the present study may give sufficient and relevant data on the nerves, among Keralite population in which studies are few.

A study on variations of musculocutaneous nerve and median nerve in the arm

2017 ◽  
Vol 66 ◽  
pp. S49
Author(s):  
P. Sasidhar ◽  
K.S.N. Prasad ◽  
Chitra ◽  
G. Syamala
Keyword(s):  
Median Nerve ◽  
Musculocutaneous Nerve

scholarly journals Cadaveric Study of Anatomical Variations in the Musculocutaneous Nerve and in the Median Nerve

2019 ◽  
Vol 36 (02) ◽  
pp. 122-125
Author(s):  
Abhilasha Priya ◽  
Chandni Gupta ◽  
Antony Sylvan D'souza
Keyword(s):  
Brachial Plexus ◽  
Median Nerve ◽  
Peripheral Nerves ◽  
Anatomical Variations ◽  
Musculocutaneous Nerve ◽  
Branching Pattern ◽  
Kasturba Medical College ◽  
Upper Limbs ◽  
Medical College ◽  
Lateral Cord

Introduction The musculocutaneous nerve and the median nerve are branches from the lateral cord of the brachial plexus with a root value of C5, C6, and C7. The medial root of the median nerve is a branch of the medial cord. The present study aims at observing any variations in these peripheral nerves, so that this knowledge can be utilized by surgeons, anesthesiologists, and orthopedicians during surgical procedures and nerve block. Materials and Methods The present study was carried on 30 adult embalmed cadavers (60 upper limbs) in the department of anatomy of the Kasturba Medical College , Manipal, India. The infraclavicular part of the brachial plexus was dissected, and any anatomical variations in the formation and in the branching pattern of the musculocutaneous nerve and of the median nerve were noted and photographs were taken. Results The median nerve was noted to be formed from 3 roots in 8 out of 60 dissected upper limbs (13.33%). The musculocutaneous nerve was absent in 5% of the dissected limbs, and communications between these 2 nerves were noted in 13.33% of the dissected limbs. Conclusions Noted variations of the nerves may be of help to surgeons operating in the axillas and in the arms.

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