Type of Article:  Original Research

Volume 8; Issue 1.2 (February 2020)

Page No.: 7328-7332

DOI: https://dx.doi.org/10.16965/ijar.2019.369


Natwar Lal Gaur 1, Jagdish S. Soni *2, Samta Gaur 3.

1 Assistant Professor, Department of Anatomy, Index Medical College Hospital & Research Centre Indore, Madhya Pradesh, India.

*2 Associate Professor, Department of Anatomy, Medical College Baroda, Gujarat, India.

3 Tutor, Department of Anatomy, Government Medical College Pali, Rajasthan, India.

Correspondence for Author:  Dr. Jagdish S.Soni, P-13 Aviral Society, Opp.- Mangalam duplex, Sama savli road, Baroda, Gujarat, India. Pin-390024. Mobile: +919426587464 E-Mail: ashushiti@yahoo.co.in


Background: Though the supply to the human brachialis muscle by radial nerve has been investigated by many authors in past, but there is no consistency in these reports. The aim of the present study was to record the anatomical variations in radial nerve supply to the brachialis muscle.

Materials and Methods: The material of the study consisted of 62 superior extremities obtained from dissection laboratory of department of anatomy, Medical College Baroda (Gujarat). All these extremities belonged to adult cadavers of known sex.

Human brachialis muscle was identified with its proximal and distal attachment. The radial nerve branch innervating to brachialis was identified and parameters like presence or absence of radial nerve branch innervating to brachialis; number of branches; its length; site of emergence and its distance from lateral epicondyle and site of entry into brachialis were noted.

Result:  Brachialis muscle was innervated by a branch from radial nerve in 87.09% of cases. Varying number of radial nerve branches (1 to 3) innervated the brachialis muscle. Most of these branches (91.93%) entered the lower one third of the muscle. The average length of these muscular branches was 9.17mm.The average distance from the site of emergence to the lateral epicondyle of humerus was 6.54 cm.

Conclusion:  Significant variations in supply of brachialis muscle were recorded. These variations are of clinical importance for surgeons, orthopaedicians and anaesthetists.

KEY WORDS: Human Brachialis Muscle, Radial nerve, Lateral Epicondyle of Humerus.


  1. Datta A.K. Principles of general anatomy, 6th Current books international, Kolkata 96-100.
  2. Williams et al. Gray’s Anatomy, 39th London: Churchill 855.
  3. Moore KL. Clinically Oriented Anatomy, 5th edition, Philadelphia, London: Lippincott Williams and Wilkins; 2006; 784-801.
  4. Vishram singh. Textbook of anatomy, reed Elsevier India private limited 2nd2014; 95.
  5. Datta A.K. Essential of Human Anatomy, (Superior and Inferior Extremities), 4th 2012; 63.
  6. Last RJ. Anatomy Regional and Applied, 11th edition. London: English language Book society and Churchill Livingstone. 2006; 60-6.
  7. Datta A.K. Essential of human anatomy Neuroanatomy, 3rd edition, current books international, Kolkata
  8. Cunningham’s Manual of Practical Anatomy (Upper and Lower Limbs) Volume I, 15th edition 71-2.
  9. Langman’s Medical Embryology, 10th edition. Philadelphia: Lippincott Williams and Wilkins. 2000;143-9.
  10. A K. Datta Essential of human Embryology, 6th edition. Kolkata books international. 2010:286.
  11. Mahakkanukrauh P, Somsarp V. Dual innervation of the brachialis muscle, Clinical Anatomy, 2002;15(3):206-9.
  12. Blackburn S. C., Wood C. P. Evans D. J., Watt D. J. Radial nerve contribution to brachialis in the UK Caucasian population: position is predictable based on surface landmarks, ClinAnat. 2007;20(1):64-7.
  13. Prakash I, Kumari J, Singh N, Deep RG, Akhtar T, Sridevi NS, et al. A cadaveric study in the Indian population of the brachialis muscle innervations by the radial nerve. Romanian Journal of Morphology and Embryology. 2009; 50(1):111-4.
  14. Srimathi T, Umapathy Sembian. A Study on the Radial Nerve Supply to the Human Brachialis Muscle and Its Clinical Correlation. Journal of Clinical and Diagnostic Research. 2011 October;5(5): 986-9.
  15. Shalini Chaudhary, Sarvesh, Rimpi Gupta. Dual Innervation of Human Brachialis Muscle. Sch. Acad. J. Biosci. 2015; 3(2A):124-7.
  16. Frazer E. A., Hobson M., Mcdonald S. W., The distribution of the radial and musculocutaneous nerves in the brachialis muscle. ClinAnat. 2007; 20(7):785-9.
  17. Bacakoglu AK, Kira A, Muratlil K, Ekin A, Ergur I. Medial transposition of the radial nerve for anterolateral plate fixation of the humerus: cadaveric study. Anatomical Science International. 2007; 82:116-20.
  18. Linell EA. The distribution of nerves in the upper limb, with reference to the Variabilities and their clinical significance. J Anat.1921; 55:79-112.
  19. Guse T. R., Ostrum R. F. The surgical anatomy of the radial nerve around the humerus. ClinOrthopRelat Res. 1995; 320:149-53.
  20. Carlan D., Pratt J., Patterson J. M., Weiland A. J., Boyer M. I., Gelberman R. H. The radial nerve in the brachium: an anatomic study in human cadavers. J Hand Surg [Am]. 2007;32(8):1177-82.                              

Cite this article: Natwar Lal Gaur, Jagdish S. Soni, Samta Gaur. THE INNERVATION OF BRACHIALIS MUSCLE BY RADIAL NERVE IN GUJARAT REGION – A HUMAN CADAVERIC STUDY. Int J Anat Res 2020;8(1.2):7300-7304. DOI: 10.16965/ijar.2019.369