The features of clinical evaluation and monitoring of the dynamics of therapy in dogs with osteoarthritis remain insufficiently studied. These questions, as well as the optimization of treatment regimens and monitoring of osteoarthritis in dogs, were the basis of our research. Clinical (animal clinical examination), radiological (radiographic analysis of dog joints), and statistical methods were used for the study. The studies were conducted on 20 experimental animals (dogs). The approbation took place in eight veterinary clinics. Thus, in our developed system of assessment of the condition of the diseased limb, in general, 15 parameters were included: signs of pain at rest, signs of pain in passive movements, signs of pain on palpation of the joint and periarticular tissues, crunch and crack during palpation of the joint during passive joint movements, nature difficulty in exiting a lying or sitting position, the duration of the start of lameness that occurs after state of rest, the nature of lameness in exercise, the duration of lameness after exercise, the nature of lameness in the whole day, joint narrowing of the joint, osteophytosis, deformation and disruption of the configuration of the joint surfaces, fragmentation of the articular cartilage, subchondral sclerosis, atrophy of the muscles acting on the joint For better presentation and to simplify the diagnosis of the stage of osteoarthritis, we have been offered a special key in the form of a table filled out by a veterinarian for examination of a dog with joint pathology. However, in monitoring the treatment of arthropathy, the dynamics and its expression can be negative. The scoring system can significantly counteract the subjectivism of prognostic and dynamic assessment of arthropathy in dogs. In the future planned to improve the system of evaluation of pathological processes of joints in dogs with the use of ultrasound and computed tomography of the joints

Keywords: scoring system of evaluation, arthropathy, pain sensitivity, lameness, diagnosis of osteoarthritis, dogs