Abstract：
Transversus abdominis release (TAR) is a myofascial release technique which helps in surgical repair of large ventral abdominal wall defects. In this procedure, the medial margin of muscular part of transversus abdominis (TA) is of great importance. Hence, the authors sought to describe the extent of medial margin of TA muscle. The surgical steps of TAR were performed in 10 formalin-fixed cadavers and distance between medial margin of TA muscle, lateral margin of rectus abdominis, to linea alba at five anatomical levels were documented respectively. The distance between the inferior epigastric vessels and the medial border of TA muscle was also noted. The TA muscle was within the posterior rectus sheath in all cadavers, at the xiphisternum (R, 61.6 mm; L, 58.9 mm), and at midway between xiphisternum and umbilicus (R, 25.4 mm; L, 27.1 mm). The TA muscle exited the posterior rectus sheath between this point and the umbilicus. The mean incongruity at the next three levels were -24.6 mm, -24.9 mm, and -22.9 mm respectively on the right and -21.4 mm, -19.9 mm, and -18.9 mm respectively on the left. The mean distance between the medial border of TA and inferior epigastric vessels was 18.9 mm on the right and 17.2 mm on the left. The muscular part of TA was incorporated within the posterior rectus sheath above the umbilicus, and it completely exited the rectus sheath at the umbilicus. This is contrary to the traditional understanding of posterior rectus sheath formation.
摘要：
腹横肌释放（TAR）是一种肌筋膜释放技术，有助于手术修复大的腹侧腹壁缺损。在这个过程中，腹横肌（TA）肌肉部分的内侧缘非常重要。因此，作者试图描述TA肌肉内侧边缘的范围。TAR的手术步骤在10具福尔马林固定尸体和TA肌肉内侧边缘之间的距离上进行，腹直肌侧缘，分别记录了五个解剖水平的lineaalba。还注意到上腹部下血管与TA肌肉内侧边界之间的距离。所有尸体的TA肌都在后直肌鞘内，在xiphisternum(R，61.6mm;L,58.9mm),在下胸骨和脐部之间的中间(R，25.4mm;L,27.1毫米)。TA肌肉在该点和脐之间退出后直肌鞘。接下来三个级别的平均不一致度为-24.6毫米，-24.9mm,和-22.9毫米分别在右侧和-21.4毫米，-19.9毫米，和-18.9毫米分别在左边。TA内侧边界与腹壁下血管之间的平均距离右侧为18.9mm，左侧为17.2mm。TA的肌肉部分并入脐带上方的后直肌鞘内，它完全离开脐带处的直肌鞘。这与后直肌鞘形成的传统理解相反。
