scholarly journals Nervous Communications In The Upper Limb. A Cadaveric Study

10.3823/2536 ◽  
2017 ◽  
Vol 10 ◽  
Author(s):  
Humberto Ferreira Arquez
Keyword(s):  
Ulnar Nerve ◽  
Upper Limb ◽  
Anatomical Variations ◽  
Musculocutaneous Nerve ◽  
Upper Extremities ◽  
Upper Limbs ◽  
Invasive Procedures ◽  
Extreme Caution ◽  
Male Cadaver ◽  
The University

Background: Anatomical variations of the terminal branches of the brachial plexus in terms of communication between nerves at the level of upper limb have been reported, these communications were median and musculocutaneous nerve, median and ulnar nerve, radial and ulnar nerve (at level humeral), but communications between the radial and ulnar nerve at level of the forearm are very rare. Methods and Findings: 34 upper extremities of 15 male and 2 females embalmed adults cadavers in the laboratory of Morphology of the University of Pamplona. The upper limbs were studied serially during the years 2013-2016. Of the 34 upper limbs studied in the Laboratory of Mor­phology of the University of Pamplona, in a 75 year-old male cadaver anatomical variations were found, dissected carefully and morphological details were photographed, these variations consisted of nervous communications between median and musculocutaneous nerve in the arm, median and ulnar nerve in the forearm, radial and ulnar nerve in the forearm. Conclusions: Knowledge of these communications is of clinical significance. Surgical, therapeutic and diagnostically invasive procedures require extreme caution to prevent lesions of the anastomotic branches.

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 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 Anastomosis Between Ulnar And Radial Nerve: A Cadaveric Study

10.3823/2479 ◽  
2017 ◽  
Vol 10 ◽  
Author(s):  
Humberto Ferreira Arquez
Keyword(s):  
Brachial Plexus ◽  
Peripheral Nerves ◽  
Radial Nerve ◽  
Age Groups ◽  
Anatomical Variations ◽  
Upper Limbs ◽  
Posterior Aspect ◽  
Anesthetic Agents ◽  
Diagnostic Approaches ◽  
The University

Background: Brachial plexus variations are not rare. Variations in its terminal branches in the arm or forearm are frequently reported. Communications between branches of the brachial plexus are also not uncommon findings; however there is very little mention of communication between the radial and ulnar nerves in the literature. In view of this significance is performed this study with the purpose to determine any communications of radial nerve with neighboring peripheral nerves at level of axilla, arm, forearm. Methods and Findings: A total of 17 cadavers with different age groups were used for this study. The upper limbs region (34 sides) were dissected carefully and photographed in the Morphology Laboratory at the University of Pamplona. Of the 34 upper limbs studied 33 showed normal morphology, the course and branching patterns of the nerves was normal (97.06%). In 1 specimen in the left forearm (2.94%), the radial and ulnar nerves were dissected and communicating branches were observed originating near the upper third in the posterior aspect of the forearm traveling from the ulnar to the radial nerve. The communicating branch was approximately 5.84 cm long and 1.73 mm in diameter. This anastomotic branch is an unusual anastomosis, no described in the literature between radial and ulnar nerve in forearm. Knowledge on the variant pattern of peripheral nerves is imperative not only for the surgeons, but also for the radiologists during image technology and MRI interpretations and for the anesthesiologists before administering anesthetic agents thus in diagnostic approaches.   Conclusions: Lack of understanding of these variations can also confound the assessment of the severity of nerve injury as well as recovery. Awareness of such anatomical variations is very important in order to proper diagnosis of sensorimotor symptoms.

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.

scholarly journals Anatomical Study of the Ulnar Nerve Variations at High Humeral Level and Their Possible Clinical and Diagnostic Implications

2015 ◽  
Vol 2015 ◽  
pp. 1-4 ◽  
Author(s):  
Anitha Guru ◽  
Naveen Kumar ◽  
Swamy Ravindra Shanthakumar ◽  
Jyothsna Patil ◽  
Satheesha Nayak Badagabettu ◽  
...  
Keyword(s):  
Ulnar Nerve ◽  
Upper Limb ◽  
Nerve Palsy ◽  
Motor Behavior ◽  
Anatomical Variation ◽  
Anatomical Study ◽  
Anatomical Variations ◽  
Clinical Implications ◽  
Surgical Practice ◽  
Careful Observation

Background. Descriptive evaluation of nerve variations plays a pivotal role in the usefulness of clinical or surgical practice, as an anatomical variation often sets a risk of nerve palsy syndrome. Ulnar nerve (UN) is one amongst the major nerves involved in neuropathy. In the present anatomical study, variations related to ulnar nerve have been identified and its potential clinical implications discussed. Materials and Method. We examined 50 upper limb dissected specimens for possible ulnar nerve variations. Careful observation for any aberrant formation and/or communication in relation to UN has been carried out. Results. Four out of 50 limbs (8%) presented with variations related to ulnar nerve. Amongst them, in two cases abnormal communication with neighboring nerve was identified and variation in the formation of UN was noted in remaining two limbs. Conclusion. An unusual relation of UN with its neighboring nerves, thus muscles, and its aberrant formation might jeopardize the normal sensori-motor behavior. Knowledge about anatomical variations of the UN is therefore important for the clinicians in understanding the severity of ulnar nerve neuropathy related complications.

scholarly journals Abnormal Communication between Lateral Thoracic Artery and Anterior Circumflex Humeral Artery – a Case Report

2018 ◽  
Vol 61 (2) ◽  
pp. 65-68
Author(s):  
Dinesh V. Kumar ◽  
Ramakrisnan Rajprasath ◽  
Prasad G. Bhavani
Keyword(s):  
Upper Limb ◽  
Axillary Artery ◽  
Limb Bud ◽  
Branching Pattern ◽  
Upper Limbs ◽  
Vascular Plexus ◽  
Lateral Thoracic Artery ◽  
The World ◽  
Male Cadaver ◽  
Arterial Anomalies

Variations in the branching pattern of axillary artery are observed by many anatomists all over the world. A unique bilateral variation in the axillary artery was observed during the routine dissection of the upper limbs on an approximately 65 year old male cadaver. An abnormal communicative channel was observed between lateral thoracic artery and anterior circumflex humeral artery. It passed between the two roots of median nerve. Arterial anomalies in the upper limb are due to defective remodelling of vascular plexus of the upper limb bud during embryogenesis. Knowledge of variations in axillary artery is quintessential for surgeons, radiologists and anaesthesiologists to avoid treacherous complications during procedures.

scholarly journals Upper limb entrapment neuropathies in multiple sclerosis

2020 ◽  
Vol 6 (2) ◽  
pp. 205521732093077
Author(s):  
Han Yin ◽  
Krishnan PS Nair ◽  
Dasappaiah G Rao ◽  
Sankaranarayanan Hariharan ◽  
Amy Spencer ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Ulnar Nerve ◽  
Upper Limb ◽  
Signs And Symptoms ◽  
Nerve Entrapment ◽  
Upper Limbs ◽  
Entrapment Neuropathies ◽  
Ulnar Nerve Entrapment ◽  
Neurophysiological Studies ◽  
Tunnel Syndromes

Introduction Entrapment neuropathies of upper limbs such as carpal tunnel and cubital tunnel syndromes are common in the general population. Identification of entrapment neuropathies of upper limbs in patients with multiple sclerosis can be clinically challenging as signs and symptoms could be attributed to multiple sclerosis. People at later stages of multiple sclerosis use mobility aids and wheelchairs. Weakness of hands in this cohort due to entrapment neuropathies could adversely affect their mobility and independence. Methods This was a retrospective review of records of patients with multiple sclerosis referred for clinical neurophysiological studies with clinical suspicion of upper limb entrapment neuropathies over a 10-year period. We collected demographic details, clinical features, clinical neurophysiological data and details of aids and appliances used for mobility. Results Among 71 patients, 38 (53.5%) patients had at least one entrapment neuropathy of upper limb confirmed by clinical neurophysiological studies. Twelve (31%) patients had median nerve entrapment, 20 (53%) had ulnar nerve entrapment and six (16%) had both. Risk of ulnar nerve entrapment was significantly higher in patients using a powered wheelchair (odds ratio 5.7, 95% confidence interval (1.7–18.7, p = 0.0037). Discussion Entrapment neuropathies should be considered in patients with multiple sclerosis reporting sensory and motor symptoms of hands.

The Branching Pattern and Communications of the Musculocutaneous Nerve

2007 ◽  
Vol 32 (5) ◽  
pp. 560-562 ◽  
Author(s):  
A. KRISHNAMURTHY ◽  
S. R. NAYAK ◽  
L. VENKATRAYA PRABHU ◽  
R. P. HEGDE ◽  
S. SURENDRAN ◽  
...  
Keyword(s):  
Median Nerve ◽  
Peripheral Nerves ◽  
Anatomical Variation ◽  
Anatomical Variations ◽  
Clinical Findings ◽  
Musculocutaneous Nerve ◽  
Branching Pattern ◽  
Upper Limbs ◽  
Lateral Aspect ◽  
Upper Arm

Anatomical variations of peripheral nerves are important and can help explain otherwise incomprehensible clinical findings. A study of 26 right and 18 left formalin-preserved upper limbs identified the fact that the musculocutaneous nerve is subject to considerable anatomical variation, including communication with the median nerve. A study of its branching pattern made us aware of why debility after trauma to the lateral aspect of the upper arm may be more than expected, and this study considers the clinical and surgical importance of these variations of the musculocutaneous nerve.

scholarly journals Absence of Musculocutaneous Nerve: Embryological Basis

2013 ◽  
Vol 3 (2) ◽  
pp. 21-24
Author(s):  
Arvind Kumar Pankaj ◽  
CS Ramesh Babu ◽  
Archana Rani ◽  
Anita Rani ◽  
Jyoti Chopra ◽  
...  
Keyword(s):  
Brachial Plexus ◽  
Median Nerve ◽  
Ulnar Nerve ◽  
Lateral Root ◽  
Axillary Artery ◽  
Musculocutaneous Nerve ◽  
Medical Sciences ◽  
Lateral Cord ◽  
Pectoral Nerve ◽  
Male Cadaver

Variation of brachial plexus characterized by the absence of musculocutaneous nerve in right arm was found during routine dissection of a 54 year old male cadaver. After giving lateral pectoral nerve, rest of the lateral cord continued as lateral root of median nerve. An unusual branch was arising from lateral cord which crossed the axillary artery anteriorly and then divided into two branches. One of these branches joined ulnar nerve and other medial root of median nerve. All the muscles of front of arm were supplied by branches of median nerve. These variations are important for the anesthetists, surgeons, neurologists during surgery and for anatomists during dissection in the region of axilla. DOI: http://dx.doi.org/10.3126/ajms.v3i2.6626 Asian Journal of Medical Sciences 3(2012) 21-24

scholarly journals Upper Limb Congenital Anomalies in Nigeria

2020 ◽  
Vol 17 (3) ◽  
pp. 106-111
Author(s):  
David Odoyoh Odatuwa-Omagbemi ◽  
Emeka Izuagba ◽  
Roy Efetobor Enemudo ◽  
Taiwo Olusola Osisanya ◽  
Cletus Ikechukwu Otene ◽  
...  
Keyword(s):  
Upper Extremity ◽  
Upper Limb ◽  
Congenital Anomalies ◽  
Upper Extremities ◽  
Upper Limbs ◽  
Herbal Products ◽  
Mothers And Fathers ◽  
Specific Diagnosis ◽  
Metabolic Defects ◽  
Group 2

Background: About 1–2% of neonates have congenital anomalies; of these, 10% affect the upper limbs. Congenital anomalies are structural or metabolic defects present at birth. Objective: To review cases seen over a four-year period in a tertiary specialist hospital in Lagos and share our experience. Methodology: Case notes and theatre records of patients with congenital upper limb anomalies were retrieved and relevant data extracted. Data were analyzed with SPSS version 20. Results: 46 patients with 53 diagnoses of upper extremity congenital anomalies: 28 were males and 18 females between 5 weeks and 14 years. 17 patients (37%) presented within the first 12 months of life. Average ages of mothers and fathers were 34.1 and 37 years respectively. 26% of mothers had febrile illnesses and 28.3% used herbal products during the index pregnancies. Swanson’s group 2 was the commonest (58.4). Syndactyly was the commonest descriptive individual diagnosis (49%). Treatments were individualized according to specific diagnosis. Conclusions: Congenital anomalies of the upper extremities present as various diagnostic entities. Syndactyly was the most frequently encountered here. Keywords: Upper limbs, Congenital, Anomalies

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