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Carpal Alignment: A New Method for Assessment.

C A Selles1, L Ras1, M M J Walenkamp1

  • 1Trauma Unit, Department of Surgery, Academic Medical Center, Amsterdam, The Netherlands.

Journal of Wrist Surgery
|April 4, 2019
PubMed
Summary
This summary is machine-generated.

A new perpendicular method offers a reproducible way to measure carpal alignment in distal radius fractures, showing high reliability for clinicians evaluating fracture reduction.

Keywords:
carpal alignmentdistal radius fracturemeasurements

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Area of Science:

  • Orthopedic surgery
  • Radiology
  • Biomechanics

Background:

  • Carpal alignment is crucial for assessing distal radius fracture reduction.
  • Current methods for quantifying carpal alignment lack consensus.
  • Standardized measurement techniques are needed for reliable evaluation.

Purpose of the Study:

  • Compare inter- and intraobserver variability of a novel perpendicular method versus the Ng and McQueen method.
  • Evaluate the reproducibility of carpal alignment measurements in fractured and unfractured wrists.
  • Investigate the normal distribution of carpal alignment in healthy wrists.

Main Methods:

  • Lateral plain radiographs were used to assess carpal alignment.
  • Two methods were compared: the Ng and McQueen method and a new perpendicular method.
  • Three examiners measured carpal alignment in 100 patients (50 fractured, 50 unfractured).

Main Results:

  • The perpendicular method demonstrated higher interobserver reliability (0.98) than the Ng method (0.86).
  • Intraobserver reliability was superior for the perpendicular method (0.96, 0.89, 0.72) compared to the Ng method (0.89, 0.62, 0.63).
  • In unfractured wrists, the mean dorsal capitate position was 0.25 mm.

Conclusions:

  • The novel perpendicular method is a highly reproducible technique for measuring carpal alignment.
  • This method offers superior inter- and intraobserver reliability for clinical use.
  • The findings support the use of the perpendicular method for consistent fracture reduction assessment.