Femoral anteversion measurement : evaluation of inter- and intraobserver reliability.

Femoral anteversion measurement : evaluation of inter- and intraobserver reliability. Acta Orthop Belg. 2020 Mar;86(1):17-21 Authors: Behaeghe O, Van Beeck A, Dossche L, Somville J Abstract The aim of this study was to evaluate the inter- and intraobserver reliability of a CT-based femoral anteversion measurement. 17 CT scans showing an abnormal anteversion on one side were presented to 6. Three measurements of all scans were obtained : two bilateral measurements and a third measurement with a flipped CT scan. Interobserver correlation results using the spearman test for left, right and anteversion difference had a mean of respectively : 0.918, 0.760 and 0.757. Intraobserver correlation had a maximum of respectively : 0,99, 0,89 and 0,94. Correlation coefficients were consistently higher for the second measurement. The lower correlation boarder of 0,8 was often exceeded. Intraobserver correlation was higher than interobserver correlation. As we evaluated a high variance in interobserver reliability, we recommend an accurate and objective measurement of the anteversion angle. A personal measurement and comparison to the radiological protocol is necessary. PMID: 32490768 [PubMed - in process]
Source: Acta Orthopaedica Belgica - Category: Orthopaedics Tags: Acta Orthop Belg Source Type: research