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Surgical Implications of Innervation Pattern of the Triceps Muscle: A Cadaveric Study.

A new interesting article has been published in J Hand Microsurg. 2018 Dec;10(3):139-142. doi: 10.1055/s-0038-1660771. Epub 2018 Jun 20. and titled:

Surgical Implications of Innervation Pattern of the Triceps Muscle: A Cadaveric Study.

Authors of this article are:

Chaware PN, Santoshi JA, Patel M, Ahmad M, Rathinam BAD.

A summary of the article is shown below:

The innervation pattern of triceps is complex and not fully comprehended. Anomalous innervations of triceps have been described by various authors. We have attempted to delineate the nerve supply of the triceps and documented the anomalous innervations of its different heads. The brachial plexus and its major branches (in the region of the axilla and arm) and triceps were dissected in 36 embalmed cadaver upper limbs. Long head received one branch from radial nerve in 31 (86%) specimens. Four (11%) specimens received two branches including one that had dual innervation from the radial and axillary nerves, and one (3%) specimen had exclusive innervation from a branch of the axillary nerve. Medial head received two branches arising from the radial nerve in 34 (94%) specimens. One (3%) specimen received three branches from the radial nerve whereas one (3%) had dual supply from the radial and ulnar nerves. Lateral head received multiple branches exclusively from the radial nerve, ranging from 2 to 5, in all (100%) specimens. Knowledge of the variations in innervation of the triceps would not only help the surgeon to avoid inadvertent injury to any of the nerve branches but also offers new options for nerve and free functional muscle transfers.

Check out the article’s website on Pubmed for more information:



This article is a good source of information and a good way to become familiar with topics such as:

brachial plexus branches;innervation pattern;nerve injury;nerve transfer;surgical approach;triceps

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