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Related Experiment Video

Updated: Jun 4, 2026

Evaluating Postural Control and Lower-extremity Muscle Activation in Individuals with Chronic Ankle Instability
07:52

Evaluating Postural Control and Lower-extremity Muscle Activation in Individuals with Chronic Ankle Instability

Published on: September 18, 2020

Comparison of three posterior dynamic stabilization devices.

Sophia N Sangiorgio1, Hormoz Sheikh, Sean L Borkowski

  • 1Orthopaedic Research Center at Orthopaedic Hospital/University of California Los Angeles, Los Angeles, CA 90007, USA.

Spine
|March 2, 2011
PubMed
Summary

This study compared three posterior lumbar stabilization devices in a cadaver model. Each device demonstrated unique benefits, suggesting tailored clinical applications for motion-sparing spinal surgery.

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Area of Science:

  • Orthopedic biomechanics
  • Spinal surgery
  • Degenerative disc disease treatment

Background:

  • Posterior dynamic stabilization devices are increasingly used for degenerative disc disease.
  • Understanding device-specific performance is crucial for optimal patient outcomes.

Purpose of the Study:

  • To compare range of motion, disc height, and foraminal area of lumbar spinal motion segments.
  • To evaluate three posterior lumbar motion preservation devices (PercuDyn, X-Stop, Isobar) in vitro.

Main Methods:

  • Biomechanical analysis of human cadaveric lumbar spinal motion segments.
  • Testing involved intact, injured, and device-stabilized states under various loading conditions.
  • Measurements included range of motion, disc height, and foraminal area.

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Sit-to-stand-and-walk from 120% Knee Height: A Novel Approach to Assess Dynamic Postural Control Independent of Lead-limb
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Sit-to-stand-and-walk from 120% Knee Height: A Novel Approach to Assess Dynamic Postural Control Independent of Lead-limb

Published on: August 30, 2016

Related Experiment Videos

Last Updated: Jun 4, 2026

Evaluating Postural Control and Lower-extremity Muscle Activation in Individuals with Chronic Ankle Instability
07:52

Evaluating Postural Control and Lower-extremity Muscle Activation in Individuals with Chronic Ankle Instability

Published on: September 18, 2020

Sit-to-stand-and-walk from 120% Knee Height: A Novel Approach to Assess Dynamic Postural Control Independent of Lead-limb
08:24

Sit-to-stand-and-walk from 120% Knee Height: A Novel Approach to Assess Dynamic Postural Control Independent of Lead-limb

Published on: August 30, 2016

Main Results:

  • The injury model increased motion and decreased disc height/foraminal area.
  • PercuDyn excelled in preventing hyperextension.
  • X-Stop increased foraminal area, and Isobar increased anterior disc height.

Conclusions:

  • All three posterior stabilization devices performed as intended.
  • Each device demonstrated unique strengths, indicating specific clinical applications.
  • Device selection should be based on individual patient needs and treatment goals.