Sagittal plane slab fractures of the third carpal bone in 45 racing Thoroughbred horses.
Authors: Tallon Rose, O'Neill Henry, Bladon Bruce
Journal: Equine veterinary journal
Summary
# Sagittal Slab Fractures of the Third Carpal Bone in Racing Thoroughbreds Sagittal plane slab fractures of the third carpal bone represent a significant but poorly characterised injury in UK racehorses, with no published outcome data available for this population. This 15-year retrospective analysis examined 47 Thoroughbreds (49 fractures) to determine return-to-racing success rates and compare conservative management against arthroscopic surgical repair using a single 3.5-mm lag screw. Overall, 60% of horses (27/47) raced again after injury, with a median time to first start of 251 days; surgical cases showed a higher success rate (67%, 20/30 horses; median 264 days) compared to conservative management (47%, 7/15 horses; median 240 days), and notably, surgically managed horses demonstrated greater improvement in Racing Post Rating post-injury (70% versus 14%). Both treatment approaches can facilitate successful return to training and racing, though the superior performance gains in surgically repaired cases suggest arthroscopic fixation may be the preferred option where resources and owner objectives support this intervention—particularly for horses with racing potential warranting performance improvement rather than retirement.
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Practical Takeaways
- •Arthroscopic repair with lag screw placement offers superior racing performance outcomes compared to conservative management for sagittal slab fractures of the third carpal bone, though both approaches enable return to racing
- •Expect return to racing in 240-264 days median timeframe regardless of management type; owners should plan for approximately 8-9 months recovery period
- •Surgical management may be preferred where improving or maintaining competitive rating is a goal, though conservative management remains viable for horses with less demanding performance expectations
Key Findings
- •60% of horses (27/47) returned to racing following sagittal slab fracture of the third carpal bone, with median time to first start of 251 days
- •Surgical management with arthroscopic lag screw placement achieved 67% return to racing (20/30 horses) compared to 47% with conservative management (7/15 horses)
- •Surgically managed horses showed greater improvement in Racing Post Rating following injury (14/20) versus conservatively managed horses (1/7, P=0.02)
- •Median return to racing was similar between surgical (264 days) and conservative (240 days) management approaches