Retro-colic Space
Retro-colic Space - Related Videos
07:54
In vitro Synthesis of Native, Fibrous Long Spacing and Segmental Long Spacing Collagen
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Cited by 16 •
2012
Simple and reproducible procedures are described for making three structurally distinct collagen assemblies from a common commercially available Type I collagen monomer. Native type, fibrous long spacing or segmental long spacing collagen can be constructed by varying the conditions to which the 300 nm long and 1.4 nm diameter monomer building block is exposed.
07:25
Ovine Lumbar Intervertebral Disc Degeneration Model Utilizing a Lateral Retroperitoneal Drill Bit Injury
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Cited by 18 •
2017
Intervertebral disc degeneration is a significant contributor to back pain and a leading cause of disability worldwide. Numerous animal models of intervertebral disc degeneration exist. We demonstrate an ovine model of intervertebral disc degeneration, utilizing a drill bit, which achieves a consistent disc injury and reproducible level of disc degeneration.
01:25
Space Trusses
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2025
A space truss is a three-dimensional counterpart of a planar truss. These structures consist of members connected at their ends, often utilizing ball-and-socket joints to create a stable and versatile framework. The space truss is widely used in various construction projects due to its adaptability and capacity to withstand complex loads. At the core of a space truss lies the fundamental unit known as the tetrahedron. This structure is composed of six members that form a three-dimensional shape...
01:27
State Space Representation
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2024
The frequency-domain technique, commonly used in analyzing and designing feedback control systems, is effective for linear, time-invariant systems. However, it falls short when dealing with nonlinear, time-varying, and multiple-input multiple-output systems. The time-domain or state-space approach addresses these limitations by utilizing state variables to construct simultaneous, first-order differential equations, known as state equations, for an nth-order system. Consider an RLC circuit, a...
01:25
Line Integrals in Space
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2026
Line integrals in space provide a mathematical method for accumulating quantities along a three-dimensional path, such as a thin coiled spring represented by the trajectory curve. The path is defined by a position vector r, which represents the x, y, and z coordinates in terms of a single parameter t, usually time or an angle. As this parameter changes, the vector traces a smooth and continuous curve through space, defining the trajectory.Line Integrals: Scalar-Valued FunctionsFor scalar-valued...
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Its potential nature results from the relationship between the fused embryonic mesocolon and the parietal peritoneum. This arrangement creates a tissue plane that is not ordinarily a large cavity, but can become clinically relevant when fluid, blood, infection, or tumor tracks through the loose connective tissue. Recognizing this behavior helps explain patterns of retroperitoneal disease spread.
During development, the mesocolon fuses with the parietal peritoneum, producing a plane associated with the fascia of Toldt. That fusion establishes the anatomic relationship between the colon and posterior abdominal wall while preserving a layer of loose connective tissue. This developmental arrangement provides an important reference for interpreting disease location and planning operations near the colon.
Loose connective tissue within the plane can permit longitudinal or regional movement of fluid, blood, infection, or tumor along the retroperitoneum. Consequently, the site of an abnormal collection or mass may not indicate its original source. Understanding this potential pathway helps clinicians anticipate extension beyond the immediately involved colonic segment and interpret apparently separate findings.
On cross-sectional imaging, awareness of this plane helps clinicians relate abnormalities to the colon, posterior abdominal wall, and retroperitoneum. A collection, hemorrhage, infection, or tumor positioned along the plane may reflect spread through its connective tissue pathway. Using these anatomic relationships improves localization of abdominal disease and supports assessment of its likely extent.
The plane provides an anatomic guide during procedures involving the colon and retroperitoneum. Surgeons use its relationship to the colon and posterior abdominal wall to understand tissue planes and anticipate structures that require protection. Particular attention is needed near vessels, ureters, and other adjacent structures, because inaccurate dissection can cause injury or alter the intended operative pathway.
It becomes especially useful when imaging or operative findings show disease extending behind the ascending or descending colon. The space can connect the primary abnormality with broader retroperitoneal involvement, so clinicians must consider spread rather than treating each finding as isolated. This perspective supports disease localization, evaluation of extension, and more informed colorectal or retroperitoneal planning.