Rath A M, Attali P, Dumas J L, Goldlust D, Zhang J, Chevrel J P
Institut d'Anatomie Clinique de l'UFR de Bobigny-Paris XIII, Bobigny, France.
Surg Radiol Anat. 1996;18(4):281-8. doi: 10.1007/BF01627606.
Traditionally, the linea alba represents the principal route of approach in abdominal surgery and in consequence it is the commonest site of incisional hernia. The aim of this study was to review its morphology and to study its mechanical parameters of resistance, deformation and elasticity in order to compare these with the prosthetic materials most often used in the treatment of incisional hernia. Forty fresh cadavers were dissected and tests with a dynamometer and "bursting strength tester" were performed on samples taken from the linea alba at three levels: supra-umbilical, subumbilical and umbilical. Forty abdomino-pelvic scans were analysed. The morphologic results allowed definition of diastasis of the rectus mm. in terms of subject age: below 45 years of age diastasis was considered as a separation of the two rectus mm. exceeding 10 mm above the umbilicus, 27 mm at the umbilical ring and 9 mm below the umbilicus; above 45 years of age the corresponding values were 15 mm, 27 mm and 14 mm respectively. In the biomechanical study the subumbilical region exhibited a coefficient of elasticity greater than that of the supra-umbilical portion, but no significant difference in resistance was found between the different parts studied. The biomechanical results are compared with the corresponding data for prosthetic materials.
传统上，白线是腹部手术的主要入路途径，因此它是切口疝最常见的部位。本研究的目的是回顾其形态，并研究其抵抗、变形和弹性的力学参数，以便将这些参数与切口疝治疗中最常用的修复材料进行比较。解剖了40具新鲜尸体，并对取自白线三个水平（脐上、脐下和脐部）的样本进行了测力计和“爆破强度测试仪”测试。分析了40份腹盆腔扫描图像。形态学结果根据受试者年龄定义了腹直肌分离：45岁以下，腹直肌分离被认为是脐上两腹直肌分离超过10mm、脐环处27mm、脐下9mm；45岁以上，相应值分别为15mm、27mm和14mm。在生物力学研究中，脐下区域的弹性系数大于脐上部分，但在所研究的不同部位之间未发现抵抗方面的显著差异。将生物力学结果与修复材料的相应数据进行了比较。
