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Computer-Aided System Application Value for Assessing Hip Development.

Yaoxian Jiang1, Guangyao Yang2, Yuan Liang1

  • 1Department of Radiology, Affiliated Zhongshan Hospital of Dalian University, Dalian, China.

Frontiers in Physiology
|December 18, 2020
PubMed
Summary

A new computer-aided system accurately measures hip joint angles, aiding in developmental screening and diagnosis of hip disorders. This tool shows high correlation with physician measurements, improving diagnostic efficiency.

Keywords:
acetabular dysplasiacomputer-aided detectioncomputer-aided diagnosiship dysplasiax-ray

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Area of Science:

  • Orthopedics
  • Radiology
  • Medical Imaging Analysis

Background:

  • Developmental dysplasia of the hip (DDH) requires accurate measurement of specific angles for diagnosis.
  • Traditional manual measurement of hip angles can be time-consuming and subject to inter-observer variability.
  • Computer-aided systems offer potential for objective and efficient angle measurement in hip imaging.

Purpose of the Study:

  • To develop and validate a computer-aided system for semiautomatic measurement of Tönnis angle, Sharp angle, and center-edge (CE) angle.
  • To establish an auxiliary measurement model for developmental screening and diagnosis of hip joint disorders.

Main Methods:

  • Retrospective analysis of 124 bilateral hip X-rays (2017-2018).
  • Manual outlining of hip bone contours in a computer-aided detection system.
  • Automatic extraction and measurement of Tönnis, Sharp, and CE angles, compared against manual measurements by an imaging physician.
  • Correlation coefficients, accuracy, and Area Under the Receiver Operating Characteristic (AUROC) curve were used for validation.

Main Results:

  • High correlation coefficients were observed for Tönnis angle (0.902), Sharp angle (0.887), and CE angle (0.902).
  • Computer-aided system accuracies were 89.1% (Tönnis), 93.1% (Sharp), and 82.3% (CE).
  • AUROC values indicated strong diagnostic efficiency: 0.940 (Tönnis), 0.956 (Sharp), and 0.948 (CE).

Conclusions:

  • Semiautomatic measurement of Tönnis, Sharp, and CE angles using the computer-aided system demonstrates high correlation with physician measurements.
  • The system provides accurate and efficient assessment of hip joint development.
  • This tool can serve as a valuable aid in the diagnosis and screening of hip joint disorders.