Authors: Trolinger-Meadows Kimberly D, Biedrzycki Adam H, He Hongjia, Werpy Natasha
Journal: Frontiers in veterinary science
Summary
# Editorial Summary Magnetic resonance imaging (MRI) has revolutionised equine musculoskeletal diagnosis, yet quantitative analysis of tendon pathology remains largely qualitative. Trolinger-Meadows and colleagues developed a three-dimensional segmentation protocol to measure deep digital flexor tendon (DDFT) volume and thickness across serial MRI examinations in six horses with DDFT injury, extracting digital data from DICOM files to create volumetric reconstructions and track changes over time. Their findings revealed that computer-assisted analysis correlated significantly with clinical assessment (r = 0.56, p = 0.01), with DDFT thickness ranging from 0.16–23.6 mm and changes between serial timepoints varying from −3.0 to +14.3 mm, notably demonstrating non-uniform remodelling patterns throughout the tendon structure. Whilst technical challenges persist at the distal insertion where the tendon blends with bone, this proof-of-concept establishes the feasibility of objective, quantifiable monitoring of DDFT healing trajectories—potentially enabling more precise prognostication and evidence-based rehabilitation protocols than conventional subjective reporting allows. For practitioners managing tendon injury cases, this methodology promises to shift clinical decision-making from descriptive observations towards measurable volumetric endpoints that could standardise treatment efficacy assessment and inform return-to-work recommendations.
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Practical Takeaways
- •3D volumetric MRI analysis may provide a more objective measure of DDFT healing progression than standard 2D imaging reports, potentially improving prognostic accuracy
- •High individual variation in tendon thickness means establishing horse-specific baseline measurements is important for detecting clinically significant changes in your patient
- •Current segmentation technology has limitations at the distal insertion; clinical interpretation should account for potential measurement error in this region
Key Findings
- •3D MRI segmentation and volumetric analysis of DDFT is feasible and correlates significantly with clinical assessment (r = 0.56, p = 0.01)
- •DDFT thickness ranges from 0.16–23.6 mm with considerable individual variation in normal and diseased tendons
- •Changes in DDFT volume over time are non-uniform, ranging from -3.0 to +14.3 mm between timepoints, indicating focal rather than global remodeling
- •Segmentation accuracy is limited at the distal DDFT insertion where tendon blends with distal phalanx bone