The twin block injection:颞深-咬肌神经阻滞麻醉

Samuel等在2014年介绍了一种同时麻醉颞深神经和咬肌神经的阻滞麻醉方法[1],叫做The twin block injection或者颞深-咬肌神经阻滞麻醉,并在2020年对该方法进行了更新[2]。

注射要点如下:

  1. 进针点:颧骨额突后方约1cm蝶骨大翼凹陷处,大约在颧骨额突后方约1cm和颧弓上方1cm处进针;
  2. 进针角度:与颞骨成35-45度角,垂直于颧弓;
  3. 进针深度: 27- or 25-gauge 长牙科注射针全长(32 mm);
  4. 注射剂量:1.8 mL 2% lidocaine with 1:100,000 epinephrine。

注射图示[2]
颞深-咬肌神经阻滞麻醉

该注射方法的解剖学依据是颞深神经和咬肌神经在颞下脊和翼外肌上头之间浅出时位置接近:

颞深-咬肌神经1
(图片来自 Atlas of the Facial Nerve and Related Structures,Thieme出版)

颞深-咬肌神经2
(图片来自Cunningham’s Manual of Practical Anatomy,Volume 3)

参考资料:

  1. Samuel Quek, Andrew Young, Gayathri Subramanian, The twin block: a simple technique to block both the masseteric and the anterior deep temporal nerves with one anesthetic injection, Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology, Volume 118, Issue 3, 2014, Pages e65-e67.
  2. Quek SYP, Gomes-Zagury J, Subramanian G. Twin Block in Myogenous Orofacial Pain: Applied Anatomy, Technique Update, and Safety. Anesth Prog. 2020 Jun 1;67(2):103-106. doi: 10.2344/anpr-67-01-03. PMID: 32633773; PMCID: PMC7342810.
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