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IJAR.2017.293

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Type of Article:  Original Research

Volume 5; Issue 3.2 (August 2017)

Page No.: 4230-4234

DOI: https://dx.doi.org/10.16965/ijar.2017.293

A STUDY OF TIBIAL NERVE- MOTOR BRANCHING PATTERN TO THE DEEP MUSCLES OF THE POSTERIOR CRURAL REGION

Edward I *1, Premchand S A 1, Benjamin W 2,  Shaik Hussain Saheb 1.

*1 Department of anatomy, JJM Medical college, Davangere, Karnataka, India.

2 Department of Anatomy, P K Das Institute of Medical Sciences, Palakkad, Kerala, India.

Corresponding author: Edward I, Department of Anatomy, JJM Medical College, Davangere, Karnataka, India. Mobile – +91-7795238824 E-Mail:  edwardemmi@gmail.com

ABSTRACT

Background: Tibial nerve is the largest branch of the sciatic nerve. From the back of thigh the tibial nerve passes vertically downward along the middle line of popliteal fossa. In the lower part of the fossa it is overlapped by the two heads of gastrocnemius and enters the posterior crural region accompanied by the posterior tibial vessels under cover of the tendinous origin of soleus muscle. The study was done to find the motor branching pattern of the tibial nerve.

Materials and Methods: Study was conducted in 60 formalin fixed lower limbs of adult human cadavers from the Department of Anatomy, JJM Medical college, Davangere, Karnataka. The muscular branching pattern and the number of muscular branches from the tibial nerve to the deep muscles of posterior crural region were noted.

Results: Type I motor branching branching pattern was the most common type observed in 70% of specimens. The Flexor halluces longus and Flexor digitorum longus were mainly supplied by one nerve branch.

Conclusion: The anatomy of the tibial nerve in the posterior crural region was found to be complex and variable. Such high variability in the motor branching pattern puts the nerve under high risk for iatrogenic injuries while performing procedures like popliteal block anaesthesia, motor nerve block, neurotomies, free fibular graft and decompression techniques in compartment syndrome. Hence a thorough anatomical knowledge is indispensible prior to performing an intervention in the posterior crural region.

Key words: Tibial nerve, Motor branches, Deep muscles of leg.

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Cite this article: Edward I, Premchand S A, Benjamin W, Shaik Hussain Saheb. A STUDY OF TIBIAL NERVE- MOTOR BRANCHING PATTERN TO THE DEEP MUSCLES OF THE POSTERIOR CRURAL REGION. Int J Anat Res 2017;5(3.2):4230-4234. DOI: 10.16965/ijar.2017.293