scholarly journals A RARE CASE OF TENDINOUS INSERTION OF CORACOBRACHIALIS ASSOCIATED WITH VARIANT MUSCULOCUTANEOUS NERVE

2020 ◽  
Vol 12 (2) ◽  
pp. 98-101
Author(s):  
Khizer H. A. Mookane ◽  
Sangeeta Muralidharan
Keyword(s):  
Median Nerve ◽  
Brachial Artery ◽  
Rare Case ◽  
Musculocutaneous Nerve ◽  
Surgical Reconstruction ◽  
The Novel ◽  
Medial Border ◽  
Brachialis Muscle

We report a rare case of the tendinous insertion of coracobrachialis muscle which has not been reported in the literature. The insertion of the novel coraco-brachialis muscle is usually into the medial border of the humerus in a 3-5cm impression at the mid-shaft level. Contrary to this, in the present case, it was seen getting inserted as a sharp slender tendon in the middle of the medial border of the humerus.  Variable insertion of coracobrachialis muscle may be responsible for the causation of compression of surrounding structures like median nerve, musculocutaneous nerve, and brachial artery. This article aims to point out a rare case of the unusual tendinous insertion of coracobrachialis and its association with musculocutaneous nerve, providing necessary information to surgeons performing surgical reconstruction using coracobrachialis.  

scholarly journals Bilateral Unusual Course of the Median Nerve, Variation in Branching Pattern of the Brachial and Superficial Ulnar Arteries: A Rare Case Report of Multiple Neuroarterial Variation

2019 ◽  
Vol 36 (03) ◽  
pp. 202-206
Author(s):  
Shahriar Ahmadpour ◽  
Khadijeh Foghi
Keyword(s):  
Median Nerve ◽  
Brachial Artery ◽  
Rare Case ◽  
Ulnar Artery ◽  
Branching Pattern ◽  
Collateral Arteries ◽  
Brachialis Muscle ◽  
Male Cadaver ◽  
Rare Case Report ◽  
The Right

Introduction Bilateral unusual course of the median nerve accompanied with variations of the brachial artery branching pattern are uncommon. Materials and Methods During the routine educational dissection of an upper limb, an interesting neurovascular variation was found in a 45-year-old male cadaver. Results We found a bilateral unusual and variant course of the median nerve in the arm region. The right median nerve, after formation, descended from the medial to the brachial artery, crossed the brachial artery anteriorly from medial to lateral, then inferiorly and lied medially to the distal third of the brachial artery, while the left median nerve ran medial to the brachial artery, passing anteriorly from medial to lateral, and, at the distal end of the arm, it buried itself in the brachialis muscle. Another set of findings were absence of the superior and inferior ulnar collateral arteries, superficial ulnar artery in the forearm and common interosseus artery originated from radial artery. Conclusion These types of compound neurovascular variations are of great importance in orthopedic, vascular, reconstructive surgeries and even in routine nursing care.

scholarly journals Variant insertion of coracobrachialis muscle-morphological significance, embryological basis and clinical importance

1970 ◽  
Vol 6 (2) ◽  
pp. 42-46 ◽  
Author(s):  
R Guha ◽  
N Satyanarayana ◽  
CK Reddy ◽  
N Jayasri ◽  
V Nitin ◽  
...  
Keyword(s):  
Median Nerve ◽  
Ulnar Nerve ◽  
Brachial Artery ◽  
Clinical Importance ◽  
Proximal Part ◽  
Medial Epicondyle ◽  
Medical Sciences ◽  
Medial Border ◽  
Male Cadaver ◽  
Anomalous Insertion

The coracobrachialis muscle in the arm is morphologically the sole representative of adductor group muscle in the arm, but such function during the process of evolution became insignificant in man. It is more important morphologically than functionally. Variant insertion of the coracobrachialis muscle was found during routine dissection of an adult male cadaver in the Department of Anatomy, College of Medical Sciences, and Bharatpur, Nepal. Normally the coracobrachialis muscle is inserted into the middle of the medial border of the humerus. In the present case an additional slender tendon passed inferiorly, crossing anterior to the median nerve and brachial artery, before attaching to the medial epicondyle of the humerus. Most of the proximal part of the tendon gave rise to an aponeurotic expansion that inserted into the distal medial border of the humerus. The tendinous insertion and aponeurotic expansion may represent a variant of the coracobrachialis longus (Wood's) muscle and the internal brachial ligament or the ligament of Struthers. The ulnar nerve was found to be traversing below the aponeurotic expansion. This type of anomalous insertion of coracobrachialis muscle may lead to compression of median nerve, brachial artery and ulnar nerve. Key words: Coracobrachialis muscle; ligament of Struthers; median nerve; brachial artery; ulnar nerve. DOI: 10.3126/jcmsn.v6i2.3616 Journal of college of Medical Sciences-Nepal, 2010, Vol.6, No-2, 42-46

scholarly journals An uncommon morphological variation of coracobrachialis muscle

2014 ◽  
Vol 03 (01) ◽  
pp. 37-38
Author(s):  
P S Chitra ◽  
V Anandhi
Keyword(s):  
Median Nerve ◽  
Brachial Artery ◽  
Morphological Variation ◽  
Nerve Palsy ◽  
Musculocutaneous Nerve ◽  
Transposition Flap ◽  
The Third ◽  
Median Nerve Palsy ◽  
Long Time ◽  
High Median

AbstractThe Coracobrachialis muscle in the arm is more important morphologically than functionally. In many animals, the Coracobrachialis has three parts. During the process of evolution the third part has disappeared and only the first two parts are found in man, enclosing the musculocutaneous nerve between them. Morphologic variations of Coracobrachialis have been known for a long time and include accessory slips that attach to the lesser tubercle, medial supracondylar ridge and medial intermuscular septum. The existence of abnormal insertion of the corabrachialis muscle should be kept in mind in a patient presenting with high median nerve palsy together with symptoms of brachial artery compression and before carrying out post-mastectomy reconstruction using coracobrachialis as a transposition flap.

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 Asymmetric Bilateral Variations in the Musculocutaneous and Median Nerves with High Branching of Brachial Artery

2012 ◽  
Vol 55 (4) ◽  
pp. 189-192
Author(s):  
Vandana Tomar ◽  
Surbhi Wadhwa
Keyword(s):  
Brachial Plexus ◽  
Median Nerve ◽  
Upper Limb ◽  
Brachial Artery ◽  
Musculocutaneous Nerve ◽  
The Other ◽  
Arterial Supply ◽  
Reconstructive Procedures

Brachial Plexus is formed by the union of the anterior rami of cervical 5, 6, 7, 8 and thoracic 1 nerves. These nerves unite and divide to form the key nerves innervating the upper limb. Variations in the course of these nerves are clinically important to anesthetists, neurologists and orthopedicians. We report bilateral variations in the arterial and neural structures in the upper limb of a 65 year old cadaver. The muscles of the arm on one side were innervated by the median nerve with absence of musculocutaneous. While on the other side the musculocutaneous nerve contributed to the formation of the median nerve. There was a presence of high bifurcation of brachial artery on both sides. Knowledge of such variations in the innervations of muscles and the arterial supply of the limbs are important to remember before performing any reconstructive procedures or interventions on the limb.

Nerve transfers to the biceps and brachialis branches to improve elbow flexion strength after brachial plexus injuries

2004 ◽  
Vol 16 (5) ◽  
pp. 313-318
Author(s):  
Thomas H. Tung ◽  
Christine B. Novak ◽  
Susan E. Mackinnon
Keyword(s):  
Brachial Plexus ◽  
Ulnar Nerve ◽  
Elbow Flexion ◽  
Musculocutaneous Nerve ◽  
Nerve Transfers ◽  
Brachialis Muscle ◽  
Nerve Fascicle ◽  
The Mean ◽  
Mean Time ◽  
Flexion Strength

Object In this study the authors evaluated the outcome in patients with brachial plexus injuries who underwent nerve transfers to the biceps and the brachialis branches of the musculocutaneous nerve. Methods The charts of eight patients who underwent an ulnar nerve fascicle transfer to the biceps branch of the musculocutaneous nerve and a separate transfer to the brachialis branch were retrospectively reviewed. Outcome was assessed using the Medical Research Council (MRC) grade to classify elbow flexion strength in conjunction with electromyography (EMG). The mean patient age was 26.4 years (range 16–45 years) and the mean time from injury to surgery was 3.8 months (range 2.5–7.5 months). Recovery of elbow flexion was MRC Grade 4 in five patients, and Grade 4+in three. Reinnervation of both the biceps and brachialis muscles was confirmed on EMG studies. Ulnar nerve function was not downgraded in any patient. Conclusions The use of nerve transfers to reinnervate the biceps and brachialis muscle provides excellent elbow flexion strength in patients with brachial plexus nerve injuries.

Anatomy and internal topography of the musculocutaneous nerve: The nerves to the biceps and brachialis muscle

1998 ◽  
Vol 23 (2) ◽  
pp. 250-255 ◽  
Author(s):  
Pariyut Chiarapattanakom ◽  
Somsak Leechavengvongs ◽  
Kiat Witoonchart ◽  
Chairoi Uerpairojkit ◽  
Phairat Thuvasethakul
Keyword(s):  
Musculocutaneous Nerve ◽  
Brachialis Muscle

The Distance of the Median Nerve from the Brachialis Muscle Changes Significantly with Elbow and Forearm Movements

2021 ◽  
Vol 30 (7) ◽  
pp. e425
Author(s):  
Davide Cucchi ◽  
Francesco Luceri ◽  
Carlo Zaolino ◽  
Alessandra Menon ◽  
Max Friedrich ◽  
...  
Keyword(s):  
Median Nerve ◽  
Brachialis Muscle ◽  
Muscle Changes

Median nerve compression caused by a venous aneurysm

2001 ◽  
Vol 94 (4) ◽  
pp. 624-626 ◽  
Author(s):  
Gerhard Marquardt ◽  
Soledad M. Barduzal Angles ◽  
Fouad D. Leheta ◽  
Volker Seifert
Keyword(s):  
Median Nerve ◽  
Rare Case ◽  
Venous Malformation ◽  
Correct Diagnosis ◽  
Nerve Compression ◽  
Venous Aneurysm ◽  
Complete Relief ◽  
Upper Arm ◽  
Content Type ◽  
Different Levels

✓ A rare case of peripheral-nerve compression in the upper arm caused by a spontaneous venous aneurysm is reported. The apparent dysfunction of the median nerve led to various vain surgical explorations of the nerve at different levels. The real localization of nerve entrapment was identified by a thorough clinical examination, and sonography yielded a correct diagnosis. Surgical resection of the venous aneurysm resulted in complete relief of pain. To the authors' knowledge, this is the first report of a spontaneous venous malformation in the upper arm causing focal neuropathy.

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