J Wrist Surg 2025; 14(02): 177-183
DOI: 10.1055/s-0044-1786161
Emerging Technologies and New Technological Concepts

Evaluation of Reliability of Dynamic Scapholunate Distance Measured on 4D CT-Acquired Images

1   Department of Development and Regeneration, Institute for Orthopedic Research and Training, KU Leuven, Leuven, Belgium
2   Department of Orthopaedic Surgery, AZ Herentals, Herentals, Belgium
,
Emiel Salaets
1   Department of Development and Regeneration, Institute for Orthopedic Research and Training, KU Leuven, Leuven, Belgium
,
Walter Coudyzer
1   Department of Development and Regeneration, Institute for Orthopedic Research and Training, KU Leuven, Leuven, Belgium
,
Darshan Shah
1   Department of Development and Regeneration, Institute for Orthopedic Research and Training, KU Leuven, Leuven, Belgium
3   Department of Mechanical Engineering, BiOME Lab, Indian Institute of Technology, Bombay, Mumbai, India
,
Ilse Degreef
1   Department of Development and Regeneration, Institute for Orthopedic Research and Training, KU Leuven, Leuven, Belgium
,
Lennart Scheys
1   Department of Development and Regeneration, Institute for Orthopedic Research and Training, KU Leuven, Leuven, Belgium
› Institutsangaben

Funding Financial support from KOOR (University Hospitals Leuven, nr S59540) was obtained to cover the necessary expenses for 4D CT.
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Abstract

Purpose A technique to measure scapholunate distance based on four-dimensional computed tomography (4D CT)-acquired images is presented.

Materials and Methods Intra-observer variability was evaluated through a repeated-measures study. A 4D CT of seven patients suspected of scapholunate lesion was performed. Anatomical landmarks were identified on a three-dimensional reconstructed model of the wrist. All 4D CT datasets were evaluated thrice by two observers. Standard deviation of the differences between two measurements, interclass correlation coefficient (ICC), standard error of measurement (SEM), and minimal detectable change (MDC) were calculated.

Results Intra-observer variability for the expert observer (ICC > 0.95) was lower than that of the novice observer (ICC > 0.77) and interobserver variability was low (ICC > 0.85). For the expert observer, measurement error (SEM < 0.13 mm and MDC < 0.36 mm) was smaller than that of the novice observer (SEM < 0.45 mm and MDC < 1.24 mm). Both SEM and MDC values were low, compared to the scan resolution and the absolute value of intervals.

Conclusion The proposed assessment results in a reproducible and reliable measurement of scapholunate distance.

Note

This trial was registered by the Clinical Trial Center of UZ Leuven (number s59540).


Authors' Contributions

W.C. provided technical support for 4D CT. E.S. and S.G. analyzed all data, supervised by L.S. and D.S. I.D. additionally supported the process. S.G. provided the final manuscript. All authors reviewed and edited the manuscript and approved the final version of the manuscript.


Ethical Approval

Ethical approval was obtained from University Hospitals Leuven, Ethical Board.


Patients' Consent

Written informed consent was obtained from all subjects before the study.




Publikationsverlauf

Eingereicht: 16. Oktober 2023

Angenommen: 27. März 2024

Artikel online veröffentlicht:
16. April 2024

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