Presence and size of synovial masses within the navicular bursa correlate well between magnetic resonance imaging and bursoscopy and have a guarded prognosis.
Authors: Giorio Maria Elisabetta, Graham Robyn J, Berner Dagmar, O'Neill Henry D, Bladon Bruce M
Journal: Equine veterinary journal
Summary
# Editorial Summary Focal masses arising from the deep digital flexor tendon within the navicular bursa have emerged as a potential source of lameness, yet their clinical significance and treatability remain poorly characterised. Giorio and colleagues compared MRI findings with direct visualisation via navicular bursoscopy in horses presenting with these lesions, establishing whether imaging could reliably predict what surgeons would encounter during intervention. The researchers found strong correlation between MRI detection and bursoscopic identification of synovial masses, with lesion size measurements showing good agreement between the two modalities—validating MRI as a diagnostic tool for treatment planning. However, despite surgical removal via bursoscopy, the prognosis for affected horses was notably guarded, suggesting that whilst these masses can be reliably identified and removed, their excision does not guarantee return to function or resolution of lameness. This work underscores the importance of careful case selection and realistic client communication when advising navicular bursoscopy, as imaging correlation should not be conflated with therapeutic success.
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Practical Takeaways
- •MRI findings of hyperintense lesions on the dorsal DDFT border within the navicular bursa are reliable indicators for surgical intervention via bursoscopy
- •While bursoscopy allows direct visualization and removal of synovial masses, prognosis remains cautious—manage owner expectations accordingly
- •Correlation between imaging and endoscopic findings is good, so bursoscopy can be confidently recommended when MRI shows these lesions
Key Findings
- •Synovial masses within the navicular bursa can be reliably identified on T1-weighted MRI and confirmed by bursoscopy with good correlation between imaging and endoscopic findings
- •The size of synovial masses shows consistent measurement agreement between MRI and bursoscopic evaluation
- •Horses with navicular bursa synovial masses have a guarded prognosis despite current recommended treatment with navicular bursoscopy