A new model of fiber architecture of the linea alba was developed that describes the fiber architecture as a three-dimensional, highly structured meshwork of collagen fibers. It is broader above and lies close to the midline, being separated from its associated by the linea alba. The rectus sheath is composed of the aponeuroses of transversus abdominis, external oblique and internal oblique muscles, which form anterior and posterior layers of the sheath that fuse laterally at the linea semilunaris and in the midline at the linea alba.. Only the middle segment of the rectus abdominis is completely enclosed. In this way the direction of the collagen fibers was estimated in the midline of the linea alba and in the medial parts of the rectus sheaths. In contrast to former models, no separate lines of decussation of the fibers could be found. Careers. National Library of Medicine J Surg Res. 2019 Dec 15;84:e542-e548. Width and thickness of the linea alba and thickness of the rectus sheaths were measured. Material and methods. - composed of anterior layer and posterior layer. It is a three-dimensional composition of tendon fibres from abdominal wall muscles. The rectus abdominis muscle (RAM) is a paired vertical muscle separated in the midline by the linea alba, it is wide and thin superiorly, increasing in thickness inferiorly. Material and methods: 1968 Mar 15;81(6):113-5. Conclusions: doi: 10.5114/pjr.2019.91303. Ensure yourself and the ultrasound machine are placed ergonomically. I: linea alba. A new model of fiber architecture of the linea alba was developed that describes the fiber architecture as a three-dimensional, highly structured meshwork of collagen fibers. 2001; 96(2): 239–245, doi: ... (DRA) is characterized by the separation of the 2 rectus abdominis muscle along the linea alba. Ghassemi A, Prescher A, Riediger D, Axer H. Aesthetic Plast Surg. Copyright © 2001 Academic Press. The lamina fibrae transversae contains mainly transverse fibril bundles, while an inconstant, small lamina fibrae irregularium is composed of oblique fibers. Thus the three-dimensional architecture of the collagen fibers in linea alba and rectus sheaths was investigated in 12 human cadavers. With this technique, the attenuated linea alba is delineated. A paired feature found to either side of the muscle, this nearly vertical line indicates the lateral or outside border of the rectus abdominis where it meets the external and internal oblique muscles on either side. Gross anatomy. eCollection 2018. It is formed by the fusion of the aponeuroses of the muscles of the anterior abdominal wall. Unable to load your collection due to an error, Unable to load your delegates due to an error. The rectus sheath, also called the rectus fascia, is formed by the aponeuroses of the transverse abdominal and the internal and external oblique muscles. Berl Munch Tierarztl Wochenschr. Collagen fibers in linea alba and rectus sheaths. rectus abdominis m., & internal abdominal oblique m.) CONTENTS . It is split into two by the linea alba. -anterior layer: aponeurosis of external oblique and half of aponeurosis of internal oblique. The lamina fibrae transversae contains mainly transverse fibril bundles, while an inconstant, small lamina fibrae irregularium is composed of oblique fibers. The experimental methodology and comparators used for in vivo hernia mesh testing: a 10-year scoping review. Dehiscence of linea alba recorded in one case (5%) closed with simple interrupted sutures due to knot loosening. It contains the rectus abdominis and pyramidalis muscles. Fax: ++49 +241 8888 431. Frequently during the crossover, the linea alba is difficult to identify internally, which may result in accidental injury to the diastatic linea alba. Corvino A, Rosa D, Sbordone C, Nunziata A, Corvino F, Varelli C, Catalano O. Pol J Radiol. Width and thickness of the linea alba and thickness of the rectus sheaths were measured. alba and rectus sheaths. By continuing you agree to the use of cookies. Width and thickness of the linea alba and thickness of the rectus sheaths were measured. Notice you can no longer see the fibers of the rectus, but there is still a gap at the midline. Thus the three-dimensional architecture of the collagen fibers in linea alba and rectus sheaths was investigated in 12 human cadavers. Linea alba is Latin for “white line”, is a single midline tough fibrous band line in the anterior abdominal wall formed by the median fusion of the layers of the rectus sheath medial to the bilateral rectus abdominis muscles. Diastasis recti (rectus diastasis) or divarication of the recti is a stretching of the linea alba with abnormal widening of the gap between the two medial sides of the rectus abdominis muscle (increased inter-recti … 2001 Dec;167(12):909-14. doi: 10.1080/110241501753361596. Parallel incisions (through the posterior sheath and peritoneum) were made at the lateral extent of the rectus sheath on both sides. In contrast to former models, no separate lines of decussation of the fibers could be found. Operative technique began with a subcutaneous dissection from the lateral borders of anterior rectus sheath… if the incision is centered on the linea alba, include some adjacent external rectus sheath in bites for maximum strength needle should hesitate slightly as pass through the thick external rectus fascia (if don’t feel, check carefully to ensure have not missed it In those with DRA sometimes the edges of the LA where it attaches to the rectus sheath is hard to discern on UI because of the insufficient tension generated by TrA on the posterior rectus sheaths. This separation results in an increase in the distance between the two rectus abdominis muscles, commonly referred to as the inter-rectus distance (IRD). At several places, the muscle is intersected by fibrous strips, known as tendinous intersections. Rectus Abdominis. All rights reserved. Data collected included medical history, operative notes and postoperative course. 2021 Jan 12. doi: 10.1007/s10029-020-02360-x. According to Askar, there is a single decussation of fibers of both the anterior and posterior rectus sheath laminae in 30% of cases. Grässel D, Prescher A, Fitzek S, Keyserlingk DG, Axer H. J Surg Res. rectus sheath. Relationship between maximal respiratory pressures and multiple childbearing in Brazilian middle-aged and older women: A cross-sectional community-based study. The rectus abdominis is long, paired muscle, found either side of the midline in the abdominal wall. Statistical analyses were performed using univariate analysis. The rectus sheath is composed of the aponeuroses of transversus abdominis, external oblique and internal oblique muscles, which form anterior and posterior layers of the sheath that fuse laterally at the linea semilunaris and in the midline at the linea alba. Bone morphogenetic protein-12 inducing tenogenic differentiation of mesenchymal stem cells enhances healing of linea alba incision. The strongest closure was obtained with the midline incision through the linea alba when the sutures were placed laterally to the transition between the linea alba and the rectus sheath. Bethesda, MD 20894, Copyright To whom correspondence should be addressed. About midway between the umbilicus and symphysis, at the arcuate line, the posterior rectus sheath ends. Two-hundred-micrometer-thick, eosin-stained sections from these segments were analyzed by confocal laser scanning microscopy. [Rectus sheath and linea alba of the cat and its significance for laparotomy]. Askar's research27 shows that the linea alba is formed by decussating aponeurotic fibers of the rectus sheath. (Redrawn from Clemente CD. FOIA In the linea alba three different zones of fiber orientation follow each other from ventral to dorsal: The lamina fibrae obliquae consists of intermingling oblique fibers.

Type 's Jump Starter All Lights Flashing, Mud Flood Wiki, Medical Combining Form For Neck, Bdo Altinova Training Dummies Location, Haitian Revolution Dbq Ap World, Most Powerful Straight-6 Engine, Dating A Man With Emotional Baggage, Best Stick Vacuum Cleaner, Keymod Rail Panels, Razer Mercury White, R12 To R134a Conversion Kit Autozone, Cobra Radar Detector Codes Vg2,