High field magnetic resonance imaging is comparable with gross anatomy for description of the normal appearance of soft tissues in the equine stifle.

This research study investigates the efficacy of high field magnetic resonance imaging (MRI) in detailing the normal anatomy of horse stifle (equivalent to the human knee), and compares this method to gross anatomical examination and ultrasound techniques. The researchers find that high field MRI can provide high-quality imaging of soft tissues in the equine stifle, thus enhancing the detection of possible stifle diseases in the future.

Study Design and Methods

• The research was designed as a prospective anatomic study, aiming to develop and examine a high field MRI protocol for scanning the equine stifle.
• Nine cadaver limbs from clinically healthy horses were used in the study.
• Each stifle was initially evaluated using ultrasonography, followed by comprehensive 1.5 Tesla MRI scanning.
• After imaging, all stifles were then studied for any gross pathological changes.
• Researchers then compared the findings obtained from gross evaluation and MRI imaging.

Findings and Discussion

• No abnormalities were identified in any of the soft tissue structures across all evaluations, which included the meniscotibial, meniscofemoral, collateral, patellar and cruciate ligaments, and the menisci.
• The high field MRI protocol established in the study delivered high spatial and contrast resolution of the soft tissue structures. This higher resolution enabled the visualization of minute structural characteristics, such as striations and variations in signal intensity.
• The researchers concluded that the findings supported the use of high field MRI as a crucial evaluation method of the soft tissues in the equine stifle.

Implications and Future Directions

• With the increased clinical availability of the high field MRI modality in the future, the authors anticipate detecting new stifle diseases that were not identifiable with previous imaging techniques.