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Multiplanar reformation computed tomography for carpal malalignment.

Philip M J Schormans1, Judith P M Schots1, René E Weijers2

  • 1Department of Trauma Surgery, Maastricht University Medical Centre, Maastricht, The Netherlands.

The Journal of Hand Surgery, European Volume
|August 21, 2019
PubMed
Summary
This summary is machine-generated.

Assessing scaphoid bone (scaphoid) morphology and carpal alignment is challenging. Multiplanar reformation computed tomography offers a reliable method for accurate measurements, improving carpal malalignment assessment.

Keywords:
Scaphoid malunionaverage intensity projectioncarpal malalignmentmultiplanar reformation computed tomographyreliability

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Area of Science:

  • Orthopedic Surgery
  • Radiology
  • Medical Imaging

Background:

  • Scaphoid bone (scaphoid) axial length and carpal malalignment interpretation is complex due to intricate scaphoid geometry.
  • Traditional measurements like scapholunate and radiolunate angles lack reproducibility.

Purpose of the Study:

  • To evaluate the reliability of multiplanar reformation computed tomography (CT) with average intensity projection for assessing scaphoid morphology and carpal alignment.
  • To improve diagnostic accuracy in scaphoid fracture cases.

Main Methods:

  • Utilized multiplanar reformation CT with average intensity projection on 39 patients with conservatively treated scaphoid fractures.
  • Four observers independently measured scaphoid morphology and carpal alignment parameters.
  • Statistical analysis included Fleiss' kappa and intraclass correlation coefficients.

Main Results:

  • Substantial agreement was observed for scapholunate and radiolunate angle measurements (Fleiss' kappa).
  • Significant intraclass correlation coefficients confirmed reliability for axial length, scapholunate angle, and radiolunate angle measurements.
  • The technique demonstrated high inter-observer reliability.

Conclusions:

  • Multiplanar reformation CT with average intensity projection is a dependable technique for evaluating scaphoid morphology and carpal alignment.
  • This advanced CT method enhances the reliability of scaphoid fracture assessment and malalignment evaluation.