Do radiographic signs of sesamoiditis in yearling Thoroughbreds predispose the development of suspensory ligament branch injury?

Summary

# Editorial Summary: Sesamoiditis in Yearlings and Suspensory Ligament Branch Injury Radiographic sesamoiditis is frequently observed in young Thoroughbreds, and clinicians have long suspected it may signal vulnerability to suspensory ligament branch injuries—a significant cause of lameness during race training—yet no prior research had formally examined this relationship. McLellan and Plevin conducted a longitudinal investigation tracking yearlings with radiographically evident sesamoiditis to determine whether these animals subsequently developed suspensory ligament branch pathology once subjected to the demands of early training. The findings either confirmed or refuted the clinical assumption that early bony changes at the sesamoid attachment sites represent a predisposing factor for the soft tissue injuries that commonly affect racehorses in their second or third year. Understanding this relationship has important implications for yearling selection, early intervention strategies, and risk stratification during the critical transition from pasture to training. For practitioners involved in young horse management—whether through radiographic screening, remedial farriery, or rehabilitation protocols—the results clarify whether sesamoiditis warrants heightened monitoring or prophylactic measures to prevent costly suspensory ligament branch injuries.

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Key Findings

• •Sesamoiditis is a common radiographic finding in yearling Thoroughbreds
• •The study investigates whether yearling sesamoiditis predisposes to subsequent suspensory ligament branch injury during early racehorse training
• •Sesamoiditis is believed to be associated with injury to the suspensory branch attachment

Conditions Studied

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