Abstract: The injuries of the knee joint and the cranial crucial ligament rupture are the serious problems in veterinary medicine. The importance of above mentioned traumas correspond to the great number of publications devoted to the subject and variety of the healing methods used in surgical treatment of the knee joint. Despite of many time consuming scientific investigations and clinical experiments, accessible methods qualification and quantification gives ambiguous or various results. Although the continuous development of the surgical techniques, some serious complications occurs. Our work presents potential complications occurrence after the extracapsular implantation of WKD prosthesis and solving methods used with significant participation of the sonography.

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