Witt Robert L, Weinstein Gregory S, Rejto Lidia K
Christiana Care Health Systems, Wilmington, Delaware 19806, USA.
Laryngoscope. 2005 Apr;115(4):574-7. doi: 10.1097/01.mlg.0000161343.85009.4c.
OBJECTIVES/HYPOTHESIS: To prove that the tympanomastoid suture (TMS) is a significantly closer and less variable anatomic landmark to the facial nerve than the posterior-superior margin of the posterior belly of the digastric muscle (PBD) in parotid surgery.
A prospective study of 14 cadaver specimens and 22 live patients comparing the closest measured distances between the TMS and PBD to the facial nerve.
The mean closest distances from the TMS and PBD to the facial nerve were 1.8 (range 0-4) mm and 12.4 (range 7-17) mm, respectively (P < .05) for cadavers. The mean closest distances in live patients from the TMS and PBD to the facial nerve were 2.0 (range 0-4) mm and 10.7 (range 5-14) mm, respectively (P < .05).
Facial nerve identification and preservation is the key to successful parotid surgery. The TMS is a significantly closer and less variable anatomic landmark compared with the PBD both in cadaver dissection and in live patients.
目的/假设：在腮腺手术中，证明鼓乳缝（TMS）作为面神经的解剖标志，比二腹肌后腹（PBD）的后上缘更靠近面神经且变异性更小。
对14例尸体标本和22例活体患者进行前瞻性研究，比较TMS和PBD到面神经的最近测量距离。
尸体标本中，TMS和PBD到面神经的平均最近距离分别为1.8（范围0 - 4）mm和12.4（范围7 - 17）mm（P < 0.05）。活体患者中，TMS和PBD到面神经的平均最近距离分别为2.0（范围0 - 4）mm和10.7（范围5 - 14）mm（P < 0.05）。
面神经的识别和保留是腮腺手术成功的关键。在尸体解剖和活体患者中，与PBD相比，TMS是更靠近且变异性更小的解剖标志。
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