Variation associated with non-piercing of coracobrachialis by musculocutaneous nerve
Journal Title: Medpulse International Journal of Anatomy - Year 2018, Vol 5, Issue 1
Abstract
Background: The Musculocutaneous nerve is the branch of lateral cord of the brachial plexus. It then passes laterally and pierces coracobrachialis. After piercing coracobrachialis it descend laterally between biceps and lateral side of the arm to continue as lateral cutaneous nerve of the forearm. Commonly musculucutaneous nerve shows variation in origin, course, branches, termination and it's connections with other nerves of brachial plexus. These variations have clinical significance during surgical procedures, in the brachial plexus block and in diagnostic clinical neurophysiology. It is important to be aware of this variation while planning the surgery in the region of the arm, as these nerves are more liable to be injured during the operation. Methods: A comprehensive study was carried out on 48 limbs by using 24 embalmed cadavers. Dissection of infraclavicular part of brachial plexus was done. The variation in the origin, number and course and their correlations to the coracobrachialis were noted. Results: The Musculocutaneous nerve didnot pierce coracobrachialis in 2 of the limbs.
Authors and Affiliations
John P Sneha, Meenakshi P Borkar, Mehera M Bhoir
A cadaveric study of the third head of biceps brachii in south Indian population
Biceps brachii is a two headed muscle in the flexor compartment of arm. Third head of Biceps brachii has been reported by various authors worldwide. The third head of Biceps brachii has significant functional and clinica...
Variations in the origin of the splenic artery and its clinical implications
Introduction: Splenic artery also known as lineal artery is the largest branch of celiac trunk in adults and is the second largest next to common hepatic artery in fetal life. Anatomy, Surgery and Radiology fields are in...
Morphological study of lumbrical muscles in human cadaveric hands
The lumbrical muscles of hand, by producing flexion at metacarpo phalangeal (MCP) joints and extension at interphalangeal joints help in writing, stitching and other forms of precision work. Hence philosophically, it may...
A cross-sectional study of standing height, sitting height and total lower limb length as indicator of growth among school children of Gond tribe boys of Pathria block, Mungeli district Chhattisgarh, India
Background: Standing height, sitting height and total lower limb length are very important dimension of human body. It indicates longitudinal growth of human long bones and gives approximate timing of epiphysis fusion. A...
Morphometric evaluation of foramen magnum
Background and Aim: Foramen magnum is an important landmark in the posterior part of the skull base, vital structures pass through it. Those structures may suffer compression in cases of foramen magnum achondroplasia and...