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[Applied anatomic study for genioglossus advancement].

Hongliang Yi1, Shankai Yin, Jian Guan

  • 1Department of Otolaryngology, Affiliated Shanghai Sixth People's Hospital of Shanghai Jiaotong University, Shanghai, 200233, China.

Lin Chuang Er Bi Yan Hou Ke Za Zhi = Journal of Clinical Otorhinolaryngology
|April 16, 2005
PubMed
Summary

This study provides anatomical measurements of the genial tubercle region to guide genioglossus advancement surgery. Findings detail precise osteotomy locations for improved surgical outcomes in obstructive sleep apnea treatment.

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Area of Science:

  • Anatomy
  • Oral and Maxillofacial Surgery
  • Sleep Medicine

Context:

  • Genioglossus advancement is a surgical technique to treat obstructive sleep apnea (OSA) by increasing airway dimensions.
  • Accurate anatomical knowledge of the mandible, specifically the genial tubercle region, is crucial for successful surgical outcomes.
  • Previous studies may lack detailed measurements relevant to precise osteotomy planning for genioglossus and geniohyoid advancement.

Purpose:

  • To establish the anatomical basis for genioglossus advancement surgery through detailed measurements of the genial tubercle.
  • To identify the origin points of the genioglossus and geniohyoid muscles.
  • To provide precise measurements for osteotomy planning in genioglossus advancement procedures.

Summary:

  • Dissection of 40 cadaver heads revealed distinct origins for the genioglossus (superior mental spine) and geniohyoid (inferior mental spine) muscles.

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  • Measurements included the dimensions of the superior and inferior mental spines, mandibular thickness, and distances from anatomical landmarks like the menton and incisor apices.
  • Significant differences were noted in the distance from incisor apices to the superior mental spine between males and females, indicating sex-based anatomical variations.

    • Impact:

    • The study provides precise anatomical data to guide the placement of horizontal and vertical bone cuts during genioglossus advancement surgery.
    • Established osteotomy guidelines (e.g., inferior horizontal cut ~5 mm above menton for combined advancement) enhance surgical predictability and safety.
    • Utilizing the menton and midline as reference points offers a practical and accurate method for locating the osteotomy site.