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Related Concept Videos

Gain01:15

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Gain and phase shift are properties of linear circuits that describe the effect a circuit has on a sinusoidal input voltage or current. The circuit's behavior that contains reactive elements will depend on the frequency of the input sinusoid. As a result, it is observed that the gain and phase shift will all be frequency functions.
Gain:
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A Mouse Distraction Osteogenesis Model
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Screw distraction technique for gaining fibular length.

Michael Y Ye1, Joshua Vaughn2, Jorge Briceno1

  • 1Beth Israel Deaconess Medical Center, Boston, MA, USA.

Injury
|September 29, 2018
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Summary

Shortened fibular length after fracture can lead to ankle instability and arthritis. A new surgical technique effectively restores fibular length and rotation, improving ankle joint function.

Keywords:
DistractionFibula fractureLengthening

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Area of Science:

  • Orthopedic Surgery
  • Anatomy
  • Biomechanics

Background:

  • Fibular length shortening, often due to fracture complications like malunion or nonunion, significantly impacts ankle joint mechanics.
  • Deltoid ligament incompetence exacerbates problems, causing lateral talar shift and widening of the ankle mortise.

Observation:

  • Shortened fibula leads to decreased tibiotalar contact area.
  • This mechanical disruption increases the risk of post-traumatic ankle arthritis.

Findings:

  • Restoring fibular length is crucial for normalizing ankle anatomy and kinematics.
  • Existing surgical methods for fibular length restoration have limitations.

Implications:

  • A novel, straightforward, and reproducible surgical technique is presented for fibular length and rotation restoration.
  • This technique aims to improve outcomes for patients with shortened fibula syndrome.
  • Successful fibular length restoration can prevent or mitigate post-traumatic ankle arthrosis.