Ultrasonography is a useful tool to diagnose and monitor healing of lesions in horse's tendons, ligaments, joints and muscles. A probe emits ultrasonographic waves, which are then reflected by the tissues back towards the probe, where they are detected. The ultrasonographic waves are reflected differently depending on what tissue structure they contact and it is these differences that are used to create an image where soft tissue structures and the surface of bone can be visualised.
In addition to commonly examined regions in the limb, ultrasonography can also be used to evaluate the horse's neck, back and the pelvis, including areas that are difficult to image with other diagnostic imaging techniques.
|Transverse ultrasonographic image of the proximal plantaromedial aspect of the metatarsal region. The accessory ligament of the deep digital flexor tendon (check ligament) is enlarged (arrows), with a diffuse decrease in echogenicity consistent with desmitis.|
|Transverse ultrasonographic image obtained just proximal to the coronary band on the dorsomedial aspect of a forelimb. The medial collateral ligament, outlined in green, is enlarged and has a diffuse hypoechogenic core lesion consistent with a sprain injury.|