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Surgical anatomy of the radial nerve at the elbow

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Abstract

An anatomical study of the brachial portion of the radial nerve with surgical implications is proposed. Thirty specimens of arm from 20 fresh cadavers (11 male, 9 female) were used to examine the topographical relations of the radial nerve with reference to the following anatomical landmarks: acromion angle, medial and lateral epicondyles, point of division between the lateral and long heads of the triceps brachii, lateral intermuscular septum, site of division of the radial nerve into its superficial and posterior interosseous branches and entry and exit point of the posterior interosseous branch into the supinator muscle. The mean distances between the acromion angle and the medial and lateral levels of crossing the posterior aspect of the humerus were 109 (±11) and 157 (±11) mm, respectively. The mean length and calibre of the nerve in the groove were 59 (±4) and 6 (±1) mm, respectively. The division of the lateral and long heads of the triceps was found at a mean distance of 126 (±13) mm from the acromion angle. The mean distances between the lateral point of crossing the posterior aspect of the humerus and the medial and lateral epicondyles were 125 (±13) and 121 (±13) mm, respectively. The mean distance between the lateral point of crossing the posterior aspect of the humerus and the entry point in the lateral intermuscular septum (LIS) was 29 (±6) mm. The mean distances between the entry point of the nerve in the LIS and the medial and lateral epicondyles were 133 (±14) and 110 (±23) mm, respectively. Our study provides reliable and objective data of surgical anatomy of the radial nerve which should be always kept in mind by surgeons approaching to the surgery of the arm, in order to avoid iatrogenic injuries.

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Acknowledgments

This work is devoted to the memory of Roberto Pavan for his skilful technical assistance.

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Authors and Affiliations

  1. Department of Physiology and Pharmacology, Section of Human Anatomy, University of Rome “La Sapienza”, Rome, Italy

    M. Artico

  2. Division of Neurosurgery, “Regina Elena”, National Cancer Institute, Rome, Italy

    S. Telera

  3. Department of Human Anatomy and Physiology, Section of Human Anatomy, University of Padova, Via A. Gabelli 65, 35121, Padova, Italy

    C. Stecco, V. Macchi, A. Porzionato, E. Vigato & R. De Caro

  4. Clinic of Plastic Surgery, Department of Medical Surgical Specialities, University of Padova, Padova, Italy

    C. Tiengo & E. Vigato

  5. Department of Diagnostic and Special Therapies, Section of Pathologic Anatomy, University of Padova, Padova, Italy

    A. Parenti

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  1. M. Artico
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  2. S. Telera
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  3. C. Tiengo
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  9. R. De Caro
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Correspondence to R. De Caro.

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Artico, M., Telera, S., Tiengo, C. et al. Surgical anatomy of the radial nerve at the elbow. Surg Radiol Anat 31, 101–106 (2009). https://doi.org/10.1007/s00276-008-0412-8

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  • DOI: https://doi.org/10.1007/s00276-008-0412-8

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