Menisci are important intra-articular structures whose main function is attributed to load transmission and impact absorption, reducing biomechanical stress and providing greater osteoarticular stability. In dogs, knee-related disorders are described as the main causes of claudication. This report aims to describe a case of lateral meniscal lesion in a canine without signs of femorotibiopatellar instability, whose main change was claudication. The diagnosis was confirmed through orthopedic evaluation and magnetic resonance imaging, in which an anechogenic line of dissolution of meniscal continuity and intact ligament structures was visualized. As a treatment, the technique of total meniscectomy was chosen, which allowed the recovery of limb function and absence of clinical manifestations.

One dog, Golden Retriever, 5 months old, was seen complaining of lameness and pain in the left pelvic limb. Avulsion of the tibial crest was diagnosed by radiographic means, which was corrected with a tension band. The absence of postoperative radiographic monitoring and the non-removal of the apparatus led to the early closure of the cranial tibial physis with continuous flow growth, resulting in pain, functional loss of the limb after one year and at a 13.2º tibial plateau angle negative. The biomechanical alteration of the limb was corrected using the inverted TPLO technique, converting the angle of the tibial plateau to 5.3 positive, without a rockback evidenced in 30, 60, 90 days up to four months after the operation. The objective of this case report is to describe the surgical correction with the inverted TPLO technique in a case of angle of the negative tibial plateau secondary to not removing the tension band applied in avulsion of the growing tibial crest. After 120 days, the dog was presented fully recovery and weight-bearing without any complication.

Introdução: A fratura metafisária proximal da tíbia é incomum, causado por lesão de baixo impacto, e tende a afetar filhotes, exigindo redução anatômica precoce para preservar o crescimento e prevenir danos secundários a função do joelho. Objetivos: Objetivou-se relatar um caso de fratura metafisária proximal da tíbia em cão filhote e descrever a técnica cirúrgica utilizada com sucesso. Materiais e métodos: Um canino, fêmea, com 5 meses de idade, chihuahua, 1 kg, foi atendido com histórico de trauma decorrente de queda. Apresentou sinais de dor e impotência funcional do membro pélvico direito com 2 dias de evolução. Ao exame ortopédico, evidenciou-se dor, crepitação e instabilidade da região proximal da tíbia direita. A radiografia evidenciou uma fratura no aspecto distal em relação a tuberosidade tibial, perfil curvo, sendo o segmento proximal côncavo e o segmento distal convexo, e optou-se pela estabilização com tala. Após 7 dias, observou-se apoio do membro, porém sem sua utilização ao caminhar. O acompanhamento radiográfico evidenciou início da formação de ponte óssea entre os fragmentos proximais e distais e o procurvatum do fragmento proximal da tíbia. Desta forma, optou-se pela redução aberta com com placa óssea bloqueada Fixin® 1,5 mm em forma de “T”, fixada a parafusos bloqueados de 1,5 mm. Resultados: No pós-operatório imediato, a avaliação radiográfica evidenciou alinhamento e aposição dos fragmentos ósseos, porém o parafuso cranial do fragmento proximal transpassou de maneira obliqua a linha de crescimento proximal. Após 30 dias, o exame radiográfico evidenciou ausência de linha de fratura e o fechamento precoce da epífise proximal lateral. Após 60 dias, o exame radiográfico mostrou um desvio angular valgo da tíbia proximal. Clinicamente, observou-se ausência de claudicação, com apoio completo do membro em estação e durante atividade física. No exame ortopédico, apresentava ausência de crepitação, dor e instabilidade e amplitude de movimento articular normal, recebendo alta clínica. Os implantes aplicados na placa de crescimento predispõe o fechamento precoce, sendo a principal consequência as deformidades de crescimento. Conclusão: Conclui-se que a estabilização com placa óssea proporcionou resultado clínico favorável, porém o acompanhamento clínico é importante para prevenção de processo degenerativos a longo prazo.

Medial patella luxation is a condition resulting from congenital bone deformities that in the long term may result in rupture of the cranial cruciate ligament. These orthopedic ailments are responsible for much of the pelvic limb claudication in dogs and degenerative joint disease. Claudication and joint pain are the main clinical manifestations, and the diagnosis is confirmed by orthopedic examination for both conditions. The simultaneous treatment of these diseases is a challenge for the surgeon. This study reports on the association of trochlear sulcus replacement with prosthesis with modified plateau leveling osteotomy for simultaneous treatment of grade III medial patellar dislocation and cranial cruciate ligament rupture in dogs.

Patellar dislocation is one of the main osteoarticular diseases described in the surgical routine of pet animals, the treatment of which differs according to the degree of dislocation based on the clinical changes presented by each patient. The present report aims to describe the association of the femoral corrective osteotomy technique, total trochlear replacement of the knee by prosthetics, and tibial tuberosity transposition with a tool for correction of grade IV patellar dislocation in a 1.5-year-old German Spitz dog with femoral varus deviation and external tibial torsion. The treatment allowed the correction of femoral bone deformation, realignment of the quadriceps extensor mechanism, and permanent maintenance of the patella on the prosthetic trochlear sulcus with early functional return of the limb, absence of pain, and lameness.