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Magnetic resonance imaging in scaphoid fractures
T Imaeda1, R Nakamura, T Miura
1Department of Orthopaedic Surgery, Nagoya University School of Medicine, Japan.
Journal of Hand Surgery (Edinburgh, Scotland)
|February 1, 1992
Summary
Magnetic Resonance Imaging (MRI) effectively diagnoses scaphoid fractures early. Specific MRI signal changes indicate fracture presence and healing, aiding treatment decisions.
Area of Science:
- Orthopedics
- Radiology
- Medical Imaging
Background:
- Scaphoid fractures are common wrist injuries.
- Early diagnosis is crucial for optimal healing and preventing complications.
- Conventional imaging may not always detect subtle or early fractures.
Purpose of the Study:
- To evaluate the efficacy of 1.5 tesla MRI with surface coils for scaphoid fracture diagnosis.
- To identify MRI signal characteristics indicative of acute and healing scaphoid fractures.
Main Methods:
- Utilized a 1.5 tesla superconducting MRI imager and surface coil.
- Scanned five healthy volunteers and 28 patients with suspected scaphoid fractures.
- Analyzed T1-weighted and T2-weighted MRI images for signal intensity patterns.
Main Results:
- MRI clearly depicted wrist anatomy, facilitating early scaphoid fracture diagnosis.
- Fresh fractures showed decreased/iso signal on T1 and increased signal on T2.
- Increased T2 signal persisted until radiographic bony union, returning to normal post-union.
Conclusions:
- 1.5 tesla MRI with surface coils is highly effective for diagnosing scaphoid fractures.
- MRI signal characteristics can monitor fracture healing progression.
- MRI is a valuable tool for early and definitive scaphoid fracture management.