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Computerized Dynamic Posturography for Postural Control Assessment in Patients with Intermittent Claudication
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Various methods for assessing static lower extremity alignment: implications for prospective risk-factor screenings.

Anh-Dung Nguyen1, Michelle C Boling, Carrie A Slye

  • 1Department of Health and Human Performance, College of Charleston, SC, USA. anguyen@highpoint.edu

Journal of Athletic Training
|May 16, 2013
PubMed
Summary
This summary is machine-generated.

Digital photographs offer a reliable method for measuring static lower extremity alignment (LEA) and limb lengths. This technique shows good agreement with clinical methods and electromagnetic tracking systems, proving efficient for research.

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Area of Science:

  • Biomechanics
  • Orthopedics
  • Sports Medicine

Background:

  • Accurate measurement of static lower extremity alignment (LEA) is crucial for identifying knee injury risk factors in large populations.
  • Existing methods require efficient and reliable tools for prospective studies.

Purpose of the Study:

  • To assess the reliability of digital photographs for measuring static LEA.
  • To compare measurements from digital photographs and clinical methods with an electromagnetic motion-tracking system.

Main Methods:

  • A descriptive laboratory study involving 33 participants.
  • Evaluated measures included pelvic angle, quadriceps angle, tibiofemoral angle, genu recurvatum, femur length, and tibia length.
  • Digital photographs and clinical methods were compared against an electromagnetic tracking system for static LEA quantification.

Main Results:

  • Digital photographs demonstrated fair to excellent intratester and intertester reliability for static knee alignment and limb length measurements (ICC range: 0.70-0.99).
  • Acceptable agreement was found between digital photographs and clinical measures for limb length.
  • Acceptable agreement was observed between both digital photographs and clinical measures against the electromagnetic tracking system for static knee angles and limb lengths.

Conclusions:

  • Digital photography provides an efficient and reliable method for assessing static knee alignment and limb length.
  • This method shows good agreement with established techniques like electromagnetic tracking, supporting its use in research cohorts.