Variation in the Distribution of Nerves in the Front of Arm- A Cadaveric Study from South India
Introduction: Brachial plexus are the main nerve supply to the muscles of upper limb and the muscles of the flexor compartment arm are supplied by Musculocutaneous Nerve (McN). Any variations in the nerve innervation of the flexor muscles of arm should be documented as they have clinical implica...
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| Format: | Article |
| Language: | English |
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JCDR Research and Publications Pvt. Ltd.
2021-10-01
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| Series: | International Journal of Anatomy Radiology and Surgery |
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| Online Access: | http://www.ijars.net/articles/PDF/2695/49134_CE[Ra1]_F(SHU)_PF1(MG_SHU)_PFA(KM)_PF2(AVG_SHU)_redo(SHU)_PFA(AVG_KM)_PN(KM).pdf |
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| author | A Vijaya Lakshmi Devi P Sushma Rao Lakshmi Durga Jakka 3 , Pitta Venkata Chandrika D Asha Latha |
| author_facet | A Vijaya Lakshmi Devi P Sushma Rao Lakshmi Durga Jakka 3 , Pitta Venkata Chandrika D Asha Latha |
| author_sort | A Vijaya Lakshmi Devi |
| collection | DOAJ |
| description | Introduction: Brachial plexus are the main nerve supply to the
muscles of upper limb and the muscles of the flexor compartment
arm are supplied by Musculocutaneous Nerve (McN). Any
variations in the nerve innervation of the flexor muscles of arm
should be documented as they have clinical implications.
Aim: To observe and document the variations in the innervation
of muscles of the front of arm and discuss its clinical implications
with the help of available literature.
Materials and Methods: This cross-sectional descriptive study
was done in the Department of Anatomy, Siddhartha Medical
College for a period of three years that is from October 2017 to
October 2020 on 50 upper limbs, from 25 cadavers. The upper
limbs were dissected to observe the innervations of muscles of
front of arm. Contents of front of arm were observed. Incidence
and percentage of variation in the population was tabulated.
Results: Variations in the nerve supply of muscles of front of arm
were noticed in 6% of the cases. In two cadavers (4%), all the
muscles of right arm except coracobrachialis were innervated
by a trifurcated branch from Median Nerve (MN) and the latter
was supplied by a separate branch from lateral cord. In another
left upper limb two separate branches innervated from lateral
cord and supplied all the muscles of arm. In the present study,
observed variations were more common on right side than on
the left side.
Conclusion: Knowledge of such variations are important for
the surgeons during surgical exploration of axilla, nerve block
in supraclavicular, infraclavicular or axillary region and also
during nerve grafting. Also, the study highlights the incidence
of variations in a particular region. |
| first_indexed | 2024-12-20T07:10:52Z |
| format | Article |
| id | doaj.art-eeed9dfebb2142429cb5dc30024daef0 |
| institution | Directory Open Access Journal |
| issn | 2277-8543 2455-6874 |
| language | English |
| last_indexed | 2024-12-20T07:10:52Z |
| publishDate | 2021-10-01 |
| publisher | JCDR Research and Publications Pvt. Ltd. |
| record_format | Article |
| series | International Journal of Anatomy Radiology and Surgery |
| spelling | doaj.art-eeed9dfebb2142429cb5dc30024daef02022-12-21T19:48:54ZengJCDR Research and Publications Pvt. Ltd.International Journal of Anatomy Radiology and Surgery2277-85432455-68742021-10-011004171910.7860/IJARS/2021/49134:2695Variation in the Distribution of Nerves in the Front of Arm- A Cadaveric Study from South IndiaA Vijaya Lakshmi Devi0P Sushma Rao1Lakshmi Durga Jakka23 , Pitta Venkata Chandrika3D Asha Latha4. Assistant Professor, Department of Anatomy, Government Siddhartha Medical College, Vijayawada, Andhra Pradesh, India.Senior Resident, Department of Anatomy, All India Institute of Medical Sciences, Hyderabad, Telangana, India.Assistant Professor, Department of Anatomy, Government Siddhartha Medical College, Vijayawada, Andhra Pradesh, India.Assistant Professor, Department of Anatomy, Government Siddhartha Medical College, Vijayawada, Andhra Pradesh, India.Professor and Head, Department of Anatomy, Government Siddhartha Medical College, Vijayawada, Andhra Pradesh, India.Introduction: Brachial plexus are the main nerve supply to the muscles of upper limb and the muscles of the flexor compartment arm are supplied by Musculocutaneous Nerve (McN). Any variations in the nerve innervation of the flexor muscles of arm should be documented as they have clinical implications. Aim: To observe and document the variations in the innervation of muscles of the front of arm and discuss its clinical implications with the help of available literature. Materials and Methods: This cross-sectional descriptive study was done in the Department of Anatomy, Siddhartha Medical College for a period of three years that is from October 2017 to October 2020 on 50 upper limbs, from 25 cadavers. The upper limbs were dissected to observe the innervations of muscles of front of arm. Contents of front of arm were observed. Incidence and percentage of variation in the population was tabulated. Results: Variations in the nerve supply of muscles of front of arm were noticed in 6% of the cases. In two cadavers (4%), all the muscles of right arm except coracobrachialis were innervated by a trifurcated branch from Median Nerve (MN) and the latter was supplied by a separate branch from lateral cord. In another left upper limb two separate branches innervated from lateral cord and supplied all the muscles of arm. In the present study, observed variations were more common on right side than on the left side. Conclusion: Knowledge of such variations are important for the surgeons during surgical exploration of axilla, nerve block in supraclavicular, infraclavicular or axillary region and also during nerve grafting. Also, the study highlights the incidence of variations in a particular region.http://www.ijars.net/articles/PDF/2695/49134_CE[Ra1]_F(SHU)_PF1(MG_SHU)_PFA(KM)_PF2(AVG_SHU)_redo(SHU)_PFA(AVG_KM)_PN(KM).pdfbiceps brachiibrachialiscoracobrachialismedian nervemusculocutaneous nerve |
| spellingShingle | A Vijaya Lakshmi Devi P Sushma Rao Lakshmi Durga Jakka 3 , Pitta Venkata Chandrika D Asha Latha Variation in the Distribution of Nerves in the Front of Arm- A Cadaveric Study from South India International Journal of Anatomy Radiology and Surgery biceps brachii brachialis coracobrachialis median nerve musculocutaneous nerve |
| title | Variation in the Distribution of Nerves in the Front of Arm- A Cadaveric Study from South India |
| title_full | Variation in the Distribution of Nerves in the Front of Arm- A Cadaveric Study from South India |
| title_fullStr | Variation in the Distribution of Nerves in the Front of Arm- A Cadaveric Study from South India |
| title_full_unstemmed | Variation in the Distribution of Nerves in the Front of Arm- A Cadaveric Study from South India |
| title_short | Variation in the Distribution of Nerves in the Front of Arm- A Cadaveric Study from South India |
| title_sort | variation in the distribution of nerves in the front of arm a cadaveric study from south india |
| topic | biceps brachii brachialis coracobrachialis median nerve musculocutaneous nerve |
| url | http://www.ijars.net/articles/PDF/2695/49134_CE[Ra1]_F(SHU)_PF1(MG_SHU)_PFA(KM)_PF2(AVG_SHU)_redo(SHU)_PFA(AVG_KM)_PN(KM).pdf |
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