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Reliability of laser-assisted hindfoot alignment evaluation.

Tadasuke Ohnishi1, Mitsumasa Hida2,3, Takayuki Nagasaki4

  • 1Department of Rehabilitation, Showa Inan General Hospital: 3230 Akaho, Komagane-shi, Nagano 399-4117, Japan.

Journal of Physical Therapy Science
|February 22, 2020
PubMed
Summary

Laser-assisted hindfoot alignment evaluation shows good reliability for a single user and moderate reliability between users. This method may be suitable for clinical use, even by non-professionals.

Keywords:
Hindfoot alignmentLaser beamReliability

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Area of Science:

  • Orthopedics
  • Biomechanics
  • Medical Instrumentation

Background:

  • Goniometers are standard for static hindfoot alignment measurement.
  • Goniometer use requires expertise, and its reliability/validity are debated.
  • A novel laser-based method offers a potential alternative for hindfoot alignment assessment.

Purpose of the Study:

  • To evaluate the reliability of a newly developed laser-assisted hindfoot alignment measurement technique.
  • To compare the laser method's reliability against traditional goniometric approaches.

Main Methods:

  • Two untrained examiners assessed hindfoot alignment in 12 healthy individuals using the laser device.
  • Intra-rater and inter-rater reliability were calculated using the Intraclass Correlation Coefficient (ICC).

Main Results:

  • Intra-rater reliability (ICC) was 0.74 for both examiners, indicating good consistency.
  • Inter-rater reliability (ICC) was 0.43, suggesting moderate agreement between examiners.

Conclusions:

  • Laser-assisted hindfoot alignment evaluation demonstrates good intra-rater reliability.
  • Moderate inter-rater reliability suggests potential for clinical application, even by non-medical personnel.
  • The laser method presents a promising, reliable alternative for hindfoot alignment assessment in clinical settings.