Musculoskeletal injury in thoroughbred racehorses: correlation of findings using multiple imaging modalities

Adaptive and nonadaptive stress remodeling in Thoroughbred racehorses leads to most of their musculoskeletal injuries, and imaging plays an important role in its detection. Bone scintigraphy is important for detecting stress remodeling and stress fractures and aids in decision making when more than one lesion is present on MRI or radiographic examinations. MRI likely represents the best modality for the assessment of osteoarthritis of the metacarpophalangeal and metatarsophalangeal joints. Ultrasonography remains important as the first modality for the assessment of tendon and ligamentous injury. However, injury to the proximal suspensory and distal sesamoidean ligaments may be best diagnosed with MRI.