Sonographic findings in canine common calcaneal tendon injury

Ultrasonography was prospectively evaluated as an ancillary diagnostic technique in canine common calcaneal injury in a series of six cases with surgical confirmation of the diagnosis. Preoperative sonographic examination localized the site of injury to the affected component of the common calcaneal tendon. Sonographic lesions consisted of focal disruption of normal tendon echotexture in all six cases, with slight to considerable enlargement of the affected tendon in five of the six cases. Sonographic examination detected the additional lesion of lateral displacement of the superficial digital flexor tendon in one case in which it was present. However, sonographic examination could not differentiate partial from complete tendon rupture.