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Automatic software-based 3D-angular measurement for weight-bearing CT (WBCT) is valid.

Martinus Richter1, Stefan Zech1, Issam Naef1

  • 1Department for Foot and Ankle Surgery Rummelsberg and Nuremberg, Germany.

Foot and Ankle Surgery : Official Journal of the European Society of Foot and Ankle Surgeons
|March 6, 2024
PubMed
Summary
This summary is machine-generated.

Automatic software-based angular measurement (AM) is a validated method for foot and ankle scans, comparable to manual measurements. AM significantly reduces measurement time by 97%, making it an efficient alternative for Weight-Bearing CT analysis.

Keywords:
Angle measurementAutomatic measurementMeasurement by handWBCTWeight-bearing CT

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Area of Science:

  • Orthopedics
  • Radiology
  • Medical Imaging Analysis

Background:

  • Weight-Bearing CT (WBCT) is crucial for assessing foot and ankle pathologies.
  • Accurate angular measurements are vital for diagnosis and treatment planning.
  • Manual measurement (MBH) is time-consuming and prone to variability.

Purpose of the Study:

  • To compare the accuracy and efficiency of automatic software-based angular measurement (AM) against manual measurement by hand (MBH).
  • To evaluate AM as a validated method for WBCT datasets.

Main Methods:

  • Analysis of 500 WBCT scans across various foot and ankle pathologies.
  • Measurement of key angles including intermetatarsal, talo-metatarsal, hindfoot, and calcaneal pitch angles.
  • Comparison of angle values and time expenditure between MBH and AM techniques.

Main Results:

  • No significant difference in angle values between MBH and AM (p > 0.36).
  • AM reduced measurement time by 97% (1 second vs. 44.5 seconds per angle).
  • Pathologies included osteoarthritis, Haglund deformity, forefoot deformity, Hallux rigidus, flatfoot, cavus foot, and ankle issues.

Conclusions:

  • Automatic angular measurement (AM) is a validated and reliable method for WBCT analysis.
  • AM offers substantial time savings, enhancing clinical workflow efficiency.
  • The study supports the adoption of AM for routine angular measurements in foot and ankle imaging.