Computer-based three-dimensional measurement of carpal alignment: measurement techniques and normal ranges
| Autor: | Theresa E. K. Höglund, Eero Waris, Robert M. J. Sippo |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Wrist Joint
Computed tomography Normal values Wrist 030218 nuclear medicine & medical imaging 03 medical and health sciences Imaging Three-Dimensional 0302 clinical medicine Reference Values Position (vector) Humans Medicine Carpal Bones Reliability (statistics) 030222 orthopedics medicine.diagnostic_test Computers business.industry Computer based Ct analysis Reproducibility of Results Three dimensional measurement medicine.anatomical_structure Surgery business Biomedical engineering |
| Zdroj: | Journal of Hand Surgery (European Volume). 46:1064-1071 |
| ISSN: | 2043-6289 1753-1934 |
| Popis: | The three-dimensional carpal alignment was measured in the neutral wrist position in 121 asymptomatic volunteers using computer-based cone-beam CT analysis. Normal values and the reliability of the automated analysis are reported. An analysis software based on segmentation of CT images and mathematical modelling was used to determine several axis variants based on different landmarks and to calculate the intercarpal angles automatically. Twenty wrists were imaged twice to determine intra-observer reliability. Mean values using the preferred axis variants were: scapholunate angle 57° (SD 9°), radiolunate angle 2° (SD 10°), lunocapitate angle –14° (SD 9°). Using alternate axis variants notably changed the angles produced. The intra-observer reliability of the analysis was excellent (mean intraclass correlation coefficient 0.97, SD 0.03). Computer-based CT analysis enables highly reproducible and automated assessment of carpal alignment. This study provides a reference database for measurement techniques and normal carpal angle values in three-dimensional imaging. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|