3-D joint space mapping at the ankle from weight-bearing CT: reproducibility, repeatability, and challenges for standardisation - Summary - MDSpire

3-D joint space mapping at the ankle from weight-bearing CT: reproducibility, repeatability, and challenges for standardisation

  • By

  • Tom D. Turmezei

  • Karan Malhotra

  • James W. MacKay

  • Andrew H. Gee

  • Graham M. Treece

  • Kenneth E. S. Poole

  • Matthew J. Welck

  • May 31, 2023

  • 0 min

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Objective:

To demonstrate the feasibility of a semi-automated 3-D joint space mapping (JSM) approach for measuring joint space width (JSW) at the ankle using weight-bearing computed tomography (WBCT) and to quantify its inter-operator reproducibility and test-retest repeatability, which are crucial for ensuring reliable clinical assessments.

Key Findings:
  • 5 out of 30 participants were excluded due to motion artefacts.
  • The study established a method for 3-D JSW measurement at the ankle.
  • Inter-operator reproducibility and test-retest repeatability were quantitatively evaluated, indicating the method's reliability for clinical use.
Interpretation:

The findings suggest that the JSM technique is feasible for assessing JSW at the ankle, with potential implications for clinical practice and research in foot and ankle disorders, such as improved diagnosis and treatment planning.

Limitations:
  • Limited sample size due to exclusions based on imaging quality, which may affect the generalizability of the findings.
  • Potential variability in joint positioning during scans, which could introduce measurement errors.
Conclusion:

The study successfully demonstrates the application of a semi-automated 3-D JSW measurement approach at the ankle, highlighting its reproducibility and repeatability, which are crucial for clinical and research applications.

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