Needle Arthroscopy of the Scapulohumeral Joint and Bicipital BURSA in Horses: An Ex Vivo Study.
Authors: Canola Paulo A, Cardenas Jairo J, Sá Gabriela C, de Paula Vanessa B
Journal: Journal of equine veterinary science
Summary
# Editorial Summary: Needle Arthroscopy of the Equine Scapulohumeral Joint The scapulohumeral (shoulder) joint presents diagnostic challenges in standing horses, particularly when subtle soft tissue or articular cartilage pathology is suspected but conventional imaging proves inconclusive. This ex vivo investigation assessed the clinical feasibility of needle arthroscopy—a minimally invasive endoscopic technique using smaller instrumentation than conventional arthroscopy—by examining ten preserved equine thoracic limbs positioned to simulate weight-bearing anatomy. Using established craniolateral and lateral portal approaches plus a newly identified caudal portal, the researchers evaluated image quality, accessibility, and instrument manoeuvrability within the joint space. Whilst needle arthroscopy yielded lower optical image resolution than standard arthroscopy, the technique proved diagnostically valuable for visualising articular structures and identifying joint pathology; however, successful visualisation of the bicipital bursa was not achieved with this approach. For equine practitioners, these findings suggest needle arthroscopy merits clinical investigation as a practical diagnostic tool for standing shoulder examination—potentially reducing the need for general anaesthesia in selected cases—though further refinement of technique and in vivo validation will be necessary before widespread implementation. The identification of the caudal portal provides an additional anatomical landmark for shoulder access that warrants exploration in future clinical applications.
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Practical Takeaways
- •Needle arthroscopy may offer a practical diagnostic option for scapulohumeral joint examination in standing horses without general anesthesia, though image quality limitations must be acknowledged.
- •The newly identified caudal portal expands surgical access options for shoulder joint evaluation in equine patients.
- •This technique is not suitable for bicipital bursa examination; alternative diagnostic methods remain necessary for this structure.
Key Findings
- •Needle arthroscopy of the scapulohumeral joint is feasible using craniolateral and lateral portals in standing horses, though image quality is limited.
- •A novel caudal portal for scapulohumeral joint access was identified and described.
- •Needle arthroscopy of the bicipital bursa was not achievable using the tested approach.
- •Needle arthroscopy shows diagnostic potential despite poor image quality compared to standard arthroscopy.