Automatic phantom-less QCT predicts hip fracture risk: Bone and muscle parameters comparison
Wen Li1, Renfei Zong2, Jianjun Wu3
1Department of Medical Imaging, Yubei District Hospital of Traditional Chinese Medicine, Chongqing, China; Department of Radiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.
European Journal of Radiology
|November 27, 2025
Summary
Intermuscular adipose tissue (IMAT) measured by automatic phantom-less quantitative computed tomography (PL-QCT) is a better predictor of hip fracture risk than bone mineral density (aBMD, vBMD). IMAT combined with vBMD offers the highest predictive accuracy.
Area of Science:
- Orthopedics and Traumatology
- Radiology
- Gerontology
Background:
- Hip fractures pose a significant health burden, particularly in aging populations.
- Accurate risk prediction is crucial for effective prevention strategies.
- Traditional bone density measures may not fully capture fracture risk.
Purpose of the Study:
- To assess the predictive performance of areal bone mineral density (aBMD), volumetric bone mineral density (vBMD), and intermuscular adipose tissue (IMAT) for hip fracture risk.
- To utilize an automatic phantom-less quantitative computed tomography (PL-QCT) system for these measurements.
- To compare the efficacy of these parameters in predicting hip fractures.
Main Methods:
- Retrospective study of 550 patients (283 with hip fractures, 267 controls) undergoing hip/pelvic CT.
- Measurement of hip aBMD, vBMD, and IMAT using an automatic PL-QCT system.
- Propensity score matching for age, sex, BMI; Mann-Whitney U test, logistic regression, and ROC curve analysis were employed.
Main Results:
- Fracture group showed significantly higher IMAT and lower aBMD/vBMD (p < 0.001).
- vBMD was protective (OR < 1), while IMAT was a risk factor (OR > 1) in multivariate analysis (p < 0.05).
- IMAT demonstrated superior fracture prediction (AUC=0.896) compared to aBMD (0.768) and vBMD (0.815); combined IMAT+vBMD yielded highest AUC (0.927).
Conclusions:
- Automatic PL-QCT multiparameter assessment, especially IMAT, surpasses traditional aBMD and vBMD in predicting hip fracture risk.
- IMAT measurements offer valuable insights beyond bone density for orthopedic decision-making.
- This approach enhances the ability to identify individuals at high risk for hip fractures.
