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Year 2018 - Volume 38, Number 6
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10.1590/1678-5150-PVB-5209 Vet 2495 pvb-5209 SA A 3D printed model for radius curvus surgical treatment planning in a dog João P.A. Bordelo et al. 38 6 00-00 2018 xxx.-xxx. 000 0 A 3D printed model for radius curvus surgical treatment planning in a dog,
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ABSTRACT.- Bordelo J.P.A., Dias M.I.R., Cardoso L.M.M.L., Requicha J.M.F., Viegas C.A.A. & Bardet J.F. 2018. A 3D printed model for radius curvus surgical treatment planning in a dog. [Modelo impresso em 3D usado num planeamento cirúrgico de um cão com radius curvus.] Pesquisa Veterinária Brasileira 38(6):1178-1183. Departamento de Ciências Veterinárias, Escola de Ciências Agrárias e Veterinárias, Universidade de Trás-os-Montes e Alto Douro, Quinta de Prados, 5000-801 Vila Real, Portugal. E-mail: joaopedrovet@live.com.pt
An 8 month-old, 10 kg male Azawakh dog was presented due to worsening forelimb gait and exercise intolerance. The right forelimb presented gross angular limb deformity with carpal valgus and radial procurvatum. Surgical planning based on radiographs allowed calculation of the centers of rotation and angularity (CORAs). The computer tomography data were used to generate 3D reconstructions of the antebrachium to aid the detection of the orthopaedic problems. With proper imaging software, the nature of the deformity and its degree were quantified using a previously unreported method based on the CORAs as a 3D printed model of anatomical area of interest. This 3D printed model was used by the surgeon to simulate the surgery with all orthopaedic steps, which included a partial ulna osteotomy and a double cuneiform osteotomy of the radius performed at the level of CORAs and stabilized with bone plates and screws. After 7 weeks, radiographs revealed bone union. At 8 months after surgery the animal presented a complete recovery of the involved forelimb. CORAs method combined with computed tomography and 3D model was useful to plan and simulate surgical procedures, including the corrective surgery of forelimb deformities in a dog which improved the surgical efficiency comparatively to the conventional pre-operative study. |
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