Monkhouse W S, Khalique A
Department of Human Morphology, University of Nottingham Medical School.
J Anat. 1986 Apr;145:61-6.
Three modes of construction of the rectus sheath above the arcuate line were found in a study of 40 cadavers. The classical description occurred most frequently, in 24 cases. The other constructions conformed to those described in earlier studies although the incidences were different. The accessory internal oblique muscle was found in none of the 40 cadavers, and pyramidalis muscle occurred on one or both both sides in only 3 out of 56 specimens. The shape and position of the arcuate line were neither symmetrical nor constant, and neither was the arrangement of the nerve supply to the rectus abdominis muscle or to the overlying skin.
在一项对40具尸体的研究中，发现了弓状线以上腹直肌鞘的三种结构模式。经典描述出现得最为频繁，有24例。其他结构与早期研究中描述的相符，尽管发生率有所不同。在40具尸体中均未发现副腹内斜肌，在56个标本中，仅3个标本在一侧或双侧出现了锥状肌。弓状线的形状和位置既不对称也不恒定，腹直肌或其上方皮肤的神经供应排列也是如此。
