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Related Concept Videos

Cable Subjected to a Distributed Load01:24

Cable Subjected to a Distributed Load

The analysis of suspension bridges is a complex and critical process that involves multiple factors, including the shape and tension of the main cables. The main cables of suspension bridges are subjected to distributed loads, which result in changes in tensile forces and deformation of the cable. These loads must be carefully considered to ensure that the bridge is safe and capable of supporting the weight of different loads.
Cable: Problem Solving01:29

Cable: Problem Solving

When dealing with a cable that is fixed to two supports and subjected to uniform loading, it is crucial to determine the maximum tension in the cable. This process can be broken down into several key steps, as outlined below:
Cable Subjected to Its Own Weight01:13

Cable Subjected to Its Own Weight

Overhead power transmission lines rely on cables to carry electricity across large distances. To ensure the stability and functionality of these lines, it is crucial to understand the shape and tension experienced by the cables under the influence of their weight.
A generalized loading function is employed to analyze a cable subjected to its own weight. This function considers the force acting along the cable's arc length rather than its projected length, providing a more accurate...
Cable Subjected to Concentrated Loads01:28

Cable Subjected to Concentrated Loads

Flexible cables are commonly used in various applications for support and load transmission. Consider a cable fixed at two points and subjected to multiple vertically concentrated loads. Determine the shape of the cable and the tension in each portion of the cable, given the horizontal distances between the loads and supports.
Tension01:10

Tension

Tension is a force along the length of a medium, in particular, a force carried by a flexible medium, such as a rope or cable. The word "tension" comes from Latin, meaning "to stretch". Not coincidentally, the flexible cords that carry muscle forces to other parts of the body are called tendons. Any flexible connector, such as a string, rope, chain, wire, or cable, can exert pull only parallel to its length; so, a force carried by a flexible connector is a tension with a direction parallel to...
Frames: Problem Solving I01:24

Frames: Problem Solving I

Consider a jib crane with an external load suspended from the pulley. The dimensions of the crane members are shown in the figure. A systematic analysis of the frame structure is required to determine the reaction forces at the pin joints, assuming that the pulleys are frictionless.

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Related Experiment Video

Updated: May 12, 2026

Laparoscopic Extracorporeal Knot-Tying for Uterine Vessel Occlusion during Hysterectomy with Cervical Cerclage in Large Uteri
05:21

Laparoscopic Extracorporeal Knot-Tying for Uterine Vessel Occlusion during Hysterectomy with Cervical Cerclage in Large Uteri

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Initial tension loss in cerclage cables.

Jérémie Ménard1, Maxime Émard, Fanny Canet

  • 1Centre de Recherche, Hôpital du Sacré-Coeur de Montréal, Montréal, Canada.

The Journal of Arthroplasty
|April 27, 2013
PubMed
Summary

Orthopaedic cable systems, including Cobalt-Chrome (CoCr) and Nylon (Ny), experience significant tension loss during surgical use. A simple CoCr cable system demonstrated superior tension maintenance compared to more complex locking devices, reducing surgical failures.

Keywords:
cablecerclagefracturesosteotomietension loss

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Area of Science:

  • Orthopaedic surgery
  • Biomaterials engineering
  • Surgical device innovation

Background:

  • Cerclage cables are crucial in fracture and osteotomy management.
  • Existing orthopaedic cable systems exhibit high failure rates and intraoperative loosening.
  • Tension maintenance is critical for the efficacy of cerclage cables.

Purpose of the Study:

  • To compare the tension-holding capacity of various orthopaedic cable systems.
  • To identify factors contributing to tension loss in cerclage cables during surgical procedures.
  • To evaluate the performance of different crimp/clamp devices with Cobalt-Chrome (CoCr) cables and a Nylon (Ny) cable.

Main Methods:

  • Instrumented testing of multifilament CoCr cables with four different crimp/clamp devices (DePuy, Stryker, Zimmer, Smith&Nephew) and one non-metallic Ny cable (Kinamed).
  • Utilized a load cell to measure cable tension during insertion and after tensioner removal.
  • Statistical analysis to determine the significance of tension loss (P<0.05).

Main Results:

  • All tested cable systems exhibited significant tension loss upon crimping (P<0.05).
  • Substantial, unexpected tension loss occurred after removing the tensioner across all systems.
  • The CoCr cable with the DePuy clamp showed the least tension loss (18%), while the CoCr-Zimmer system had the highest (52%).
  • The Ny cable system also demonstrated considerable tension loss (46%).

Conclusions:

  • The simple CoCr (DePuy) cable system significantly outperformed more complex locking devices in maintaining tension.
  • Minimizing tension loss is crucial for improving the reliability and success rate of cerclage cable usage in orthopaedic surgery.
  • Further research into cable-clamp interface mechanics is warranted to enhance orthopaedic cable system performance.