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Journal of the Korean Society for Surgery of the Hand 2007;12(4):200-205.
Published online December 1, 2007.
Intraobserver Reproducibility and Interobserver Reliability of the Radiographic Parameters in Scaphoid Fracture
Changhoon Jeong, Hyoung-Min Kim, Youn-Soo Kim, Kee-Haeng Lee, Chan-Woong Moon, Joo-Yup Lee, Jun-Won Kang, Il-Jung Park
주상골 골절에서 방사선학적 계측치의 관찰자내 재현성 및 관찰자간 신뢰성
정창훈, 김형민, 김윤수, 이기행, 문찬웅, 이주엽, 강준원, 박일중
Abstract
Purpose
Several radiographic measurement methods have been used for the evaluation of scaphoid fracture and deformity. However the reliability of the quantitative measurements of the radiographic parameters has been questioned. The purpose of this study is to evaluate the intraobserver reproducibility and interobserver reliability of the several radiographic parameters using plain radiographs and computed tomography (CT) scans. Method: Coronal and sagittal plane images of the 20 plain radiographs and CT scans of the fractured scaphoid were selected. Five observers repeated the measurement after an interval of two weeks. Each observers measured the 5 parameters including scapholunate angle (SLA), radiolunate angle (RLA), lunocapitate angle (LCA), radioscaphoid angle (RSA), carpal height ratio (CHR) on plain radiography and 4 parameters including AP intrascapoid angle (AP ISA), lateral intrascaphoid angle (Lat. ISA), dorsal cortical angle (DCA) and height-tolength ratio (HLR) on CT scans. Intraobserver reproducibility and interobserver reliability were assessed by intraclass correlation coefficients (ICCs). Results: SLA, LCA on plain radiographs and HLR on CT scans have excellent intraobserver reproducibility and interobserver reliability. RLA, RSA on plain radiographs and DCA on CT scans have moderate intraobserver reproducibility and interobserver reliability. Conclusion: SLA, LCA on plain radiographs and HLR on CT scans are best reliable radiographic parameters of assessing the deformity of the scaphoid. Further studies are required to evaluate the accuracy and the clinical applications for these measures.
 
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