Improved Detection of Scaphoid Fractures with High-Resolution Peripheral Quantitative CT Compared with Conventional...

Area of Science:

• Radiology
• Orthopedic Imaging
• Medical Diagnostics

Background:

• Conventional imaging (CT, MRI, bone scintigraphy) lacks a definitive reference standard for scaphoid fracture diagnosis.
• Diagnostic performance varies among current imaging techniques for suspected scaphoid fractures.

Purpose of the Study:

• To evaluate if high-resolution peripheral quantitative CT (HR-pQCT) improves scaphoid fracture detection compared to conventional CT.
• To assess the diagnostic accuracy of HR-pQCT in patients with clinically suspected scaphoid fractures.

Main Methods:

• 91 patients with suspected scaphoid fractures underwent clinical reassessment, conventional CT, and HR-pQCT.
• Fracture type (Herbert classification) and location correlation between CT and HR-pQCT were analyzed using Kendall W statistic.

Main Results:

• HR-pQCT identified scaphoid fractures in 26% of patients, versus 16% with conventional CT.
• High correlation (W=0.793) for fracture type and very high correlation (W=0.955) for fracture location between CT and HR-pQCT.
• 60% more scaphoid fractures were diagnosed using HR-pQCT.

Conclusions:

• HR-pQCT significantly increases scaphoid fracture detection rates compared to conventional CT.
• Conventional CT may miss a substantial proportion of scaphoid fractures, potentially over one-third in this study.
• HR-pQCT offers improved diagnostic performance for suspected scaphoid fractures.