Analysis of Accuracy and Reasons for Misstaging of ARCO 3A of Femoral Head Necrosis by Radiography
Objective To evaluate the accuracy of radiography for ARCO stage 3A of femoral head necrosis(FHN)and to analyze the reasons for its misstaging.Methods 158 patients of FHN,who underwent anteroposterior view and frog lateral view of X-ray and CT examinations of hip joint during the same period,staged as ARCO 3A by CT from January 2017 to July 2023 were retrospectively analyzed,of which 14 patients with bilateral ARCO stage 3A,so a total of 172 cases(F/M=67/91,average age:43.7±11.8 years)were included.The anteroposterior view and frog lateral view of X-ray standard radiographs of hip joint were observed for ARCO staging and statistics.Results There were 139 cases staged as ARCO 3A,and 33 cases misstaged as ARCO 2 evaluated by radiography,and the accuracy was 80.8％.Referring to hip CT images of the same period,in the cases of radiography misstaging,6 cases(18.2％)of subchondral fractures,4 cases(12.1％)of necrotic area fractures,and 23 cases(69.7％)of femoral head local collapse were not found.Conclusion The accuracy of radiography for ARCO stage 3A of FHN is high,but there is still some misstaging.In clinical work,anteroposterior view combined with frog lateral view,careful observation and identification of local slight collapse of articular surface and subchondral and necrotic area fractures is helpful to improve the accuracy of radiography for ARCO stage 3A of FHN.
Femoral Head NecrosisARCO Stage 3ARadiographyCTStaging
万方数据
维普
