Spermatic Cord Torsion

Spermatic cord torsion, also called testicular torsion, is an acute condition in which the spermatic cord twists and threatens blood flow to the testis, making it important in human biology and medicine. Rotation of the cord compresses the testicular veins first and can then obstruct arterial flow, causing swelling, ischemia, and potential tissue death. Prompt recognition of sudden scrotal pain and swelling supports urgent diagnosis and surgical detorsion, often with fixation to prevent recurrence. Studying this condition clarifies vascular compromise, tissue injury, and time-sensitive intervention in reproductive health.

Spermatic Cord Torsion - Related Videos

Education

JoVE Core - Mechanical Engineering

Torsion of Noncircular Members

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2024

Circular shafts undergoing torsional stress maintain their cross-sectional integrity due to their axisymmetric nature. This symmetry ensures an even distribution of stress, allowing the shaft to withstand torsion without distorting. In contrast, square bars, lacking this axial symmetry, experience significant distortion across their cross-sections when subjected to torsion, with the exception of along their diagonals and at lines connecting midpoints. A detailed examination of a cubic element...

Torsional Pendulum

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2025

A torsional pendulum involves the oscillation of a rigid body in which the restoring force is provided by the torsion in the string from which the rigid body is suspended. Ideally, the string should be massless; practically, its mass is much smaller than the rigid body's mass and is neglected. As long as the rigid body's angular displacement is small, its oscillation can be modeled as a linear angular oscillation. The amplitude of the oscillation is an angle. The role of mass is played by the...

Bending and Torsional Moments

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2025

Bending and torsional moments are two fundamental concepts in structural engineering. They play an important role in understanding the behavior of materials and structures under different loading conditions. The reaction developed in a structural element when subjected to an external force causes the element to bend. When a structural element bends upwards, it creates compressive normal forces on the top and tensile normal forces on the bottom, resulting in a couple that determines the bending...

Torsion in Vector Calculus

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2026

A toy train ascending a winding track that curves and tilts offers an intuitive view of torsion, a key geometric concept in the study of space curves. While curvature measures how sharply a path bends, torsion captures how the path twists out of the plane of bending. This twisting behavior is crucial in understanding three-dimensional motion and is precisely described using the Frenet–Serret framework.At each point along a space curve, the Frenet–Serret frame consists of three orthogonal unit...

Research

JoVE Journal - Medicine

Acute and Chronic Tactile Sensory Testing after Spinal Cord Injury in Rats

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Cited by 55 •

2012

We describe two tactile sensory testing methods for acute or chronic periods of spinal cord injury in rats. These validated procedures can detect the development and maintenance of allodynia-like sensations.

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