Introduction: There are several developmental disorders of the bones that cause limb deformities in dogs. They can be congenital / hereditary, traumatic or a consequence of poor nutrition. In the case of a deformity or a very extensive injury that cannot be resolved by surgery so that the animals can regain as normal movement as possible, an orthosis is made. Orthoses are medical devices that serve to support and correct deformities. Purpose: The purpose of this thesis is to custom-make orthoses for two dogs with a wrist joint deformity, to present the process of making these orthoses and to determine their effectiveness. Methods: The thesis is based on practical work, which included taking the measurements for making orthoses, measuring limbs, making two orthoses for both dogs, and testing and comparing the effectiveness of the devices with each other. We took the measures by casting. This was followed by measurements of the circumferences and length of the forelimbs. After making and processing the model, we designed the orthosis. We used polyethylene, polyurethane, low-temperature thermoplastic, plastazote, rubber, and velcro straps. After the final test and corrections on the orthoses, we conducted a visual assessment of walking and handed over the devices with instructions. Based on reporting by dog owners after a one-month orthosis test, and a veterinarian's opinion, we assessed whether continued use of the device is reasonable and safe. Results: Both dogs used a polyethylene orthosis for one month, as it proved to be the most suitable in terms of shape and components. However, our goals were not fully reached, as according to the owners and the final opinion of the veterinarian, only one of the two dogs continued to use the orthosis regularly. Discussion and conclusion: Due to the increasing involvement of animals in our lives, the owners are ready to provide them with more demanding treatments and various aids to enable them normal movement. The goal of orthotic care is to ensure a better quality of life, help prevent further joint deformities, increase the level of activity, and maintain the ability to perform daily living activities. That was only partially confirmed by our results, as obviously not every case of deformity can be solved with orthosis. Despite the suitability of the device, the effectiveness of care is influenced by other factors, such as the age of the dog, its character and adaptability, the complexity of the deformity or pathology.
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