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Is the high submandibular transmasseteric approach to the mandibular condyle safe for the inferior buccal branch?

  • Anatomic Bases of Medical, Radiological and Surgical Techniques
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Abstract

Purpose

There are basically 3 main approaches for extra-articular mandibular condyle fractures: low cervical, retromandibular and preauricular. These include a risk of facial palsy affecting the marginal mandibular branch. We use a high submandibular transmasseteric approach featuring masseter section 10–20 mm above the mandibular basilar edge. Our null hypothesis was that both the marginal mandibular and the inferior buccal branches are not more at risk than in other surgical approaches.

Methods

This study was based on 20 parotidomasseteric dissections from 10 embalmed cadaveric heads. We used as reference the vertical line, passing through the mandibular angle, parallel to the preauricular line. We performed measurements of the marginal mandibular and inferior buccal branches’ heights.

Results

The inferior buccal branch had an average height of 16.8 mm and the highest standard deviation (7.2). Extremes were, respectively, 32 and 7 mm. The marginal mandibular branch had an average height of 3.2 mm with standard deviation equal to 3.0. Extremes were, respectively, 9 and −3 mm.

Conclusion

The high submandibular transmasseteric approach provides great exposure of facial nerve branches lying on the masseter muscle, if even encountered. Through masseteric incision performed between 10 and 20 mm above the basilar edge of the mandible, the marginal mandibular branch is safe from wound with an added safety margin of 4 mm. The surgeon using this approach is most likely to encounter the inferior buccal branch. It can then be avoided under visual control. This makes it a swift and safe approach to the mandibular condyle.

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Authors and Affiliations

  1. Anatomy Department, Strasbourg University of Medicine, 4, rue Kirschleger, 67085, Strasbourg Cedex, France

    Jean-Christophe Lutz, P. Clavert, R. Wolfram-Gabel & J-L. Kahn

  2. Maxillo-Facial Surgery Department, Strasbourg University Hospital, 1, place de l’Hôpital, 67091, Strasbourg Cedex, France

    Jean-Christophe Lutz, A. Wilk & J-L. Kahn

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  1. Jean-Christophe Lutz
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  2. P. Clavert
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  3. R. Wolfram-Gabel
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  4. A. Wilk
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  5. J-L. Kahn
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Correspondence to Jean-Christophe Lutz.

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Lutz, JC., Clavert, P., Wolfram-Gabel, R. et al. Is the high submandibular transmasseteric approach to the mandibular condyle safe for the inferior buccal branch?. Surg Radiol Anat 32, 963–969 (2010). https://doi.org/10.1007/s00276-010-0663-z

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  • DOI: https://doi.org/10.1007/s00276-010-0663-z

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