Federica ter Woort DMV, Virginie De Busscher DMV, DipECVDI, MRCVS and Christopher B. Riley BVSc, PhD, Dipl. ACVS, PCIM Journal of Equine Veterinary Science February 2011 31 2 53-56 A 4-year-old Quarter Horse gelding with a history of acute trauma was presented to our faculty. This report describes the inciting injury, documented in a video, and the ultrasonographic diagnosis of a traumatic extrusion of the right lateral meniscus with an accompanying extra-articular hematoma and distal collateral ligament lesion in a competing Quarter Horse. The ultrasonographic diagnosis of a lateral meniscal injury directly correlated with postmortem findings and this type of lateral meniscal injury has not been previously described in detail.

• Case study
• Equine
• Lameness
• Traumatology
• Ultrasonography