Abstract:

Objective

To evaluate the value of low-dose CT volume scanning combined with 3 D reconstruction in the classification of intertrochanteric fractures.

Methods

Selected 107 patients with intertrochanteric fractures from March 2023 to March 2024， all patients underwent low-dose CT volume scan combined with three-dimensional reconstruction and X-ray plain ray examination， to compare the difference between low-dose CT volume scan， X-ray plain ray exploration and the number of fracture blocks.

Results

The overall accuracy of 87.85%was 84.38%，88.46%，88%，88.24%，10.38%，100.00%，and the Kappa value was 0.867 （P＜0.05）.The overall accuracy of intertrochanteric fracture classification by X-ray diagnosis was 78.50%， for type Ⅰand each stage to type Ⅱ， the accuracy was 75.00%， 76.92%， 80.00%， 82.35% and 85.71%， respectively. The Kappa value was 0.753， significant （P＜0.05）. Although the number of fracture blocks identified by low-dose CT volume scanning combined with 3 D reconstruction was less than that found by surgical exploration，the difference was not statistically significant（P＞0.05）；the number of fracture blocks detected by X-ray plain film was significantly lower than the number of surgical exploration （P＜0.05）.

Conclusion

Low-dose CT volume scanning combined with three-dimensional reconstruction in intertrochanteric fracture classification showed high accuracy and reliability， can be used as a valid diagnostic tool for fracture classification，although in the number of fracture block detection and surgical exploration differences，but the difference is not significant，and does not affect its value in clinical application.

Key words: Low-dose CTvolume scan, 3D reconstruction, Intertrochanteric fracture classification