Arthroscopic debridement of short frontal plane proximal phalanx fractures preserves racing performance.

This research investigates the effectiveness of arthroscopic debridement as a treatment method for a type of bone fracture in Thoroughbred racehorses. The findings indicate that, despite a minor decrease in post-operative starts, the horses’ racing performance, career length, and earnings were comparable to horses who had not suffered this injury.

Research Scope and Methods

• The study was retrospective in nature, utilizing medical records of 81 Thoroughbred racehorses that were treated for frontal plane fractures of the proximal phalanx.
• This injury was treated with a surgical procedure known as arthroscopic debridement, wherein a surgeon uses an arthroscope to visualize and repair the injury.
• Key pieces of evidence, such as diagnostic images and operative reports, were analyzed to identify the specific lesions and characterize the procedure used.
• After surgery, these horses’ racing performance was compared to a control group of horses who had not suffered this injury, using factors like career length, racing starts, earnings, and race quality as metrics.

Research Findings

• The majority — 91% — of the treated horses were able to return to racing after the operation.
• Treated horses had fewer racing starts after the operation compared to the control group. The median number of post-operative starts for treated horses was 12, versus 19 for the control group.
• However, the study found no significant differences in terms of earnings or career length between the treated and control group. The post-operative median earnings were $51,465 for treated horses, compared to $68,017 in controls. Similarly, career length was comparable, with a median of 7 quarters for treated horses versus 9 quarters for the control group.

Conclusions

• Given the retrospective nature of this study, it was acknowledged that there is the potential for sample bias and certain limitations in selecting matched controls.
• Nonetheless, the study concludes that treating frontal plane fractures of the proximal phalanx using arthroscopic debridement leads to comparable racing performance in terms of longevity and earnings when compared to uninjured horses.