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

Journal of hand and microsurgery

article

Prashant Nashiket Chaware¹  John Ashutosh Santoshi²  Manmohan Patel¹  Mohtashim Ahmad¹  Bertha A. D. Rathinam¹ 

[1] Department of Anatomy, All India Institute of Medical Sciences;Department of Orthopaedics, All India Institute of Medical Sciences

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

DOI  :  10.1055/s-0038-1660771

学科分类：外科医学

来源: Thieme Medical and Scientific Publishers Pvt. Ltd.

【 摘 要 】

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.

【 授权许可】

CC BY