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    Intra-individual variations in the bifurcation of the radial nerve and the length of the posterior interosseous nerve

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    5268.pdf (341.9Kb)
    Date
    2011-09-07
    Author
    Benham, Alex
    Introwicz, Barbara
    Waterfield, Jackie
    Sim, Julius
    Derricott, Hayley
    Mahon, Mike
    Metadata
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    Citation
    Benham, A., Introwicz, B., Waterfield, J., Sim, J., Derricott, H. & Mahon, M. (2012) Intra-individual variations in the bifurcation of the radial nerve and the length of the posterior interosseous nerve. Manual Therapy, 17(1), pp. 22-26.
    Abstract
    Anatomical literature on the radial nerve predominantly features inter-individual variations, with comparatively few studies investigating intra-individual variations. The radial nerve has a complex and variable course, particularly in relation to the location at which the nerve bifurcates to form the superficial branch of the radial nerve and the posterior interosseous nerve. Variations of the radial nerve may change the way the nerve and its branches, their blood supply and nerve transmission respond to forces. This study investigated the presence of intra-individual differences in the bifurcation point of the radial nerve and the length of the posterior interosseous nerve from the bifurcation to the radial tunnel. Eighteen embalmed human cadavers were dissected to reveal the radial nerve. Measurements were taken from the level of the lateral humeral epicondyle to the bifurcation of the radial nerve, and from the bifurcation to the radial tunnel. All cadavers presented with intra-individual variations between the left and right limbs. Significant differences were found between the left and right limbs for the measurement from the lateral humeral epicondyle to the bifurcation (median difference _ 18.0 mm; p _ 0.016) but not for the measurement from the bifurcation to the radial tunnel (median difference _ 7.0 mm; p _ 0.396). In conclusion, the location of the radial nerve bifurcation is subject to both intra- and inter-individual variations. Its specific relationship to the lateral humeral epicondyle also varies, occurring both distal and proximal to the level of the epicondyle. Clinical implications of these findings warrant further investigation.
    Official URL
    https://doi.org/10.1016/j.math.2011.07.009
    URI
    https://eresearch.qmu.ac.uk/handle/20.500.12289/5268
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    • Dietetics, Nutrition and Biological Sciences

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