Communications Between Musculocutaneous Nerve and Median Nerve - a Study (original) (raw)
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The West Indian medical journal, 2013
Variations such as communications between median nerve and musculocutaneous nerve or in their abnormal branching pattern constitute a major concern in clinical and surgical field. Knowledge of these variations not only provides the clinician with a proper interpretation of the case, but also minimizes the complication in surgical approaches in this region. We examined 50 isolated upper limbs to investigate the possible incidences of various types of communications between these two neighbouring peripheral nerves. Twenty-eight per cent of limbs were found to have communication between these two nerves. When categorized according to Venieratos and Anagnostopoulou's classification method, 11 out of 14 cases (79%) showed type I communications, two out of 14 (14%) showed type II and the remaining one (7%) showed type III communication pattern. Prior knowledge of communications between these two neighbouring nerves, both in terms of their incidences and pattern of communications, may ...
A Study on Incidence of Communicating branch between Musculocutaneous Nerve and Median Nerve
International Journal of Anatomy and Research, 2021
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 a...
Anatomical study of Variations of Median Nerve and Musculocutaneous Nerve in the Arm
2020
Background: The variations related to the median nerve and musculocutaneous nerve are relatively less common. The variations may have potential clinical implications especially during surgeries and nerve blocks. Materials and Method: The routine dissection of 50 adult cadavers including 42 males and 8 females in the Department of Anatomy during undergraduate training was carried out to detect the variations in the structure, formation and relation of Median nerve and musculocutaneous nerve. Results and Findings: There was a variation observed in the formation of median nerve in three adult cadavers. In three male cadaver, there was unilateral variation in the formation of the median nerve by more than two roots . However, in each of these cadavers the distribution of the median nerve was normal in arm, forearm and palm. There was normal pattern of formation, relation and course of Median nerve in rest of the cadavers. Absence of musculocutaneous nerve, and nerve not piercing coracob...
Anatomical Variations between Median and Musculocutaneous Nerve
Background: Anatomical variations of peripheral nerves and their connections are potentially important clinical issue. The aim of the present research was to study the variations between median and musculocutaneous nerve in the arm with respect to its branching pattern as well as communication of median with musculocutaneous nerve. Methods: Present study was carried out in 30 preserved human cadavers. The upper limbs of these cadavers were dissected and variations found were noted and photographed. Results: In one of the male cadaver (age ranging from 60-65 years) variations were observed in both the upper limbs. In the right arm the median nerve showed three roots of origin, the third root being a branch from musculocutaneous nerve. In the left arm the musculocutaneous nerve descended down with median nerve till lower end of axilla. Then it gave a branch which supplied a twig to coracobrachialis muscle and it self extended downwards to supply other muscles of arm. Conclusion: These observations are important in surgical repair of traumatic injury to shoulder joint. They also help in studying the dysfunction of upper limb related to median and musculocutaneous nerves. Thus these types of variations of the nerves of the arm should be considered prior to trauma evaluations and reconstructive interventions.
Anatomical Variations of the Musculocutaneous and Median Nerves: A Case Report
Folia Medica, 2019
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.
Background: Musculocutaneous nerve, a branch from the lateral cord of brachial plexus supply the muscles of the front of the arm. Musculocutaneous nerve has frequent variations in arm. Aim: To analyze the morphological variations between musculocutaneous nerve and median nerve in the arm. Materials and Method: 56 upper limbs belonging to 28 embalmed cadavers (M: F: 20:8) donated over last 3 years in the Anatomy Department, SMIMER Medical Collage, Surat were utilised for this study. The dissections of the upper limbs were performed as per Cunningham's manual. The variations and/ communications between musculocutaneous nerve and median nerve if any were identified and documented. Results: Variations were encountered in 12 (21.43%) out of 56 upper limbs of the present study. In 6 upper limbs below the coracobrachialis, musculocutaneous nerve and median nerve showed communicating rami. In 1 upper limb musculocutaneous nerve was giving larger communication to median nerve as third root. In 2 upper limbs medial cord formed the median nerve and fibres from musculocutaneous nerve join the median nerve as lateral root below coracobrachialis. In 1 upper limb musculocutaneous nerve completely fused with median nerve after supplying coracobrachialis. In 2 upper limbs muculocutaneous nerve was absent and median nerves was supplying the flexor muscles of the arm and were associated with the 3rd head of biceps brachii muscle. Conclusion: The data obtained from the study were in the mid-range of previous studies. Awareness regarding such variations as well as communications is important for surgeons, orthopaedics and anaesthetist that are treating the lesions of shoulder and arm region.
A study on the communications of median nerve with musculocutaneous and ulnar nerves
2014
Objective: Communications of median nerve with other nerves of upper limb are commonly reported and this prompted us to conduct the study. In depth study was done on the communications of median nerve with the musculocutaneous nerve and the different types were classified. Also, communications between the superficial branches of median and ulnar nerves were also studied in palm. Materials and methods: Sixty four upper limbs were dissected. The different types of communication of the median nerve with the musculocutaneous nerve and its relation to coracobrachialis were studied after a median incision along the anterior aspect of the upper limb. The communicating branch between the superficial digital branches of the median and ulnar nerves was studied in detail. Results: Communications between median and musculocutaneous nerves were seen in 15 of the 64 specimens dissected. The communication between superficial branches of median and ulnar nerve was seen in 10 palms. Conclusion: Comm...
Study of communication between musculocutaneous and median nerves in man
Journal of The Anatomical Society of India, 2018
Introduction: The median and musculocutaneous nerves are functionally most important terminal branches of brachial plexus. Injuries involving median or musculocutaneous nerve proximal to the anastomotic branch may give rise to unexpected presentation of weakness of forearm flexor and thenar muscles or present as double nerve injury. This inspired us to study the exact topography of communication between median nerve and musculocutaneous nerve and to discuss its morphological and clinical significance. Methods: The study was conducted in 50 cadavers (100 upper limbs) in duration of two and a half years. Proper cadaveric dissection was done during 2010 to 2013 in the department of Anatomy, Jawaharlal Nehru Medical College, and also in department of Anatomy Mahatma Gandhi Aurvadic Medical College, Sawangi, Wardha. Result : Present series, studied musculocutaneous and median nerves in 50 cadavers (100 upper limbs) to evaluate the communication between these two nerves. In 42% cadavers (2-bilateral and 19-unilateral) communicating branch was present, mostly single and distal to coracobrachialis muscle. More than one communicating branch was observed in 4% cadavers. Discussion: The incidence of communication between musculocutaneous and median nerve is quite high (42%). Previous studies carried out in different countries and ethnicities showed abnormal communication between these two nerves ranged from 6-68%.Lesions of communicating nerve may give rise to pattern of weakness that may impose difficulty in diagnosis. So it is important to have awareness of these variations that are observed and discussed in present study.
A Study of Communication Between Musculocutaneous Nerve and Median Nerves
Journal of Evidence Based Medicine and Healthcare, 2016
INTRODUCTION Neural variations of the brachium constitute an important anatomical and clinical entity. Although frequently reported, if accompanied by other anomalies, they deserve special mention in anatomical literature. The nerves of the extremities are especially vulnerable to injury because of their long course and superficial distribution. MATERIAL AND METHODS The present study has been undertaken on 60 upper limb routine dissections from the year 2013-2015. The data collected and compiled. OBSERVATION AND RESULTS In the present study out of 60 upper limb dissections, we got 4 variations. The specimen no 20, 37 right upper limbs and specimen 42 & 51 left upper limbs are having the communication between the musculocutaneous nerve and the median nerve. The communication between median and musculocutaneous nerve before piercing the coracobrachialis is seen in one case; the three communications after piercing the coracobrachialis muscle. SUMMARY & CONCLUSION Its ontogeny and clinical implications are discussed in detail. A lack of awareness of variations with the different patterns might complicate the surgical repair and may cause ineffective nerve blockade.
Bratislava Medical Journal, 2013
Background: The course of the brachial plexus, its relations with surrounding structures and unique primary and secondary divisions result in its wide range of anatomical variations. Most of these variations were detected during anatomical dissections and studies. It has been found that 53% of studied brachial plexuses contained variations. The communication between musculocutaneous and median nerves is the most common variation of infraclavicular part of brachial plexus. Methods: During gross anatomical dissections of peripheral nerves, we observed neuronatomical variations in upper limbs of four formalin embalmed adult cadavers. Musculocutaneous and median nerves were connected by a communicating branch at distinct level in each cadaver. The formation and relations of both nerves were noted in each case to exclude the existence of other anatomical variations. The connections were measured and documented by digital camera. Results: The communicating fi bers of variations 1 and 2 were located in the upper third of arm and proximally to musculocutaneous nerve penetration through coracobrachialis muscle. In variations 3 and 4, the communicating branch was situated in the lower third of arm and distal to the nerve penetration point. Conclusion: Variable interconnections between musculocutaneous and median nerve have to be considered in diagnosis of nerve lesions in axillary and arm regions. Compound musculocutaneous and median nerve neuropathy would occur in lesions of the interconnecting branches. Injuries of musculocutaneous nerve proximal to these branches can cause particular and unexpected symptoms, such as weakness of forearm fl exors and thenar muscles ). Full Text in PDF www.elis.sk.