Detecting Talocalcaneal Joint Pathology with CT

A 15-year-old Warmblood dressage mare presented with a persistent 1.5/5 right hind lameness, worsening when circling left.

Despite prior treatment—including DIT and TMT steroid injections and a bilateral hind proximal suspensory neurectomy—the lameness persisted. Diagnostic blocks suggested deeper pathology, and while proximal suspensory changes were identified, they were unlikely the primary pain source.

Standing CT revealed what radiographs did not: a distal medial talus subchondral defect bordered by sclerosis within the talocalcaneal region.

This case highlights:

  • The increased sensitivity of CT compared to radiographs

  • The value of advanced imaging in complex hindlimb lameness

  • How accurate diagnosis directly influences treatment strategy and outcome

Following targeted treatment of the talocalcaneal joint, the mare showed meaningful improvement.

Standing CT continues to redefine what is detectable in equine sports medicine—helping clinicians identify pathology that may otherwise remain unseen.

david ergun