Sharma Nidhi, Varshney Rohit
Department of Anatomy, Teerthankar Mahaveer Medical College, Moradabad, Uttar Pradesh, India.
Department of Anesthesia, Teerthankar Mahaveer Medical College, Moradabad, Uttar Pradesh, India.
Saudi J Anaesth. 2015 Jan;9(1):60-3. doi: 10.4103/1658-354X.146314.
Stylomastoid foramen is an important site for Nadbath facial nerve block. Exact localization of foramen holds the key to success, thus decreasing the complications. Wide racial variation exists in position of stylomastoid foramen in different population groups.
The aim was to study the morphometry of stylomastoid foramen and its location with respect to nearby anatomical landmarks.
A total of 100 dry skulls (60 male and 40 female) were studied to locate the position of center of stylomastoid foramen (CSMF) with respect to tip and anterior border of the mastoid process and jugular foramen (JF). Along with this angle between antero-posterior line passing through the tip of the mastoid process and line joining the tip with stylomastoid foramen was also measured.
In 83.51% sides of skulls, the most common position of foramen was found to be anterior to the line passing through anterior border of the mastoid process. The mean distance of center of foramen from the tip of the mastoid process was 15.26 ± 1.4 mm on right and 14.32 ± 1.8 on the left side (P < 0.001) and from JF was 12.28 ± 1.9 mm and 12.96 ± 2.1 mm on the right and left sides, respectively (P < 0.01). The position of CSMF was found at an angle of 66.57° ± 2.6° and 65.96° ± 1.8° on the right and left sides, respectively from the tip of the mastoid process.
This study makes possible the identification of the exact position of stylomastoid foramen and its application in facial nerve block.
茎乳孔是纳巴斯面神经阻滞的重要部位。准确确定该孔的位置是成功的关键，从而可减少并发症。不同人群中茎乳孔的位置存在广泛的种族差异。
本研究旨在探讨茎乳孔的形态测量及其相对于附近解剖标志的位置。
共研究100个干燥颅骨（60例男性和40例女性），以确定茎乳孔中心（CSMF）相对于乳突尖、乳突前缘和颈静脉孔（JF）的位置。同时，还测量了通过乳突尖的前后线与连接乳突尖和茎乳孔的线之间的夹角。
在83.51%的颅骨侧面，发现该孔最常见的位置在通过乳突前缘的线之前。右侧茎乳孔中心距乳突尖的平均距离为15.26±1.4mm，左侧为14.32±1.8mm（P<0.001）；右侧和左侧距颈静脉孔的平均距离分别为12.28±1.9mm和12.96±2.1mm（P<0.01）。右侧和左侧茎乳孔中心相对于乳突尖的位置角度分别为66.57°±2.6°和65.96°±1.8°。
本研究使得确定茎乳孔的确切位置及其在面神经阻滞中的应用成为可能。
