Intervertebral disc disease is one of the main neurological disorders in dogs. The clinical signs and prognosis may vary according to the location of the lesion, type of herniation, time of evolution, delay in performing the surgical intervention and the patient's behavior. Usually, lesions in the cervical region usually cause a severe clinical picture, such as hyperalgesia refractory to drug treatment until tetraparesis. In these cases, surgical intervention is the therapeutic modality of choice. The gold standard exams for the diagnosis of DDIV are magnetic resonance and myelotomography. Granulomatous meningoencephalomyelitis is an inflammatory disease that affects the brain and / or spinal cord. It can cause focal or multifocal injuries and can even reach the brain stem. Physiotherapy plays an important role both in the recovery of patients undergoing cervical surgery as it contributes to the control of local edema, accelerates tissue healing, restores muscle strength and stimulates neuromuscular function, and in the patient with a Granulomatous meningoencephalomyelitis condition, as it helps in postural control, balance and gait.

Polymethylmethacrylate bone cement is a standard material used as antibiotic carrier in the orthopedic surgery. The ultrasonic energy method is capable of triggering biological effects based on both thermal and non-thermal mechanisms. The aim of the current study is to analyze methylene blue dispersion in polymethylmethacrylate beads, in association with the acoustic field generated by non-thermal ultrasound. Forty-nine specimens were used, and each specimen comprised one polymethylmethacrylate bead (0.6-mm diameter) doped with methylene blue and deposited in gelatin sample. Forty test specimens were divided into four groups comprising 10 samples, each, based on different ultrasound intensities (Group 1: 1.0 W/cm2; Group 2: 1.5 W/cm2) and polymethylmethacrylate bead depths (A - 2 cm; B - 3 cm) in gelatin sample. The control group comprised other nine specimens and statistically differed from the other groups. All groups irradiated with ultrasound have shown statistically significant differences in methylene blue dispersion, except for Groups 2A and 2B. Methylene blue dispersion in gelatin among groups was 1A> 1B; 2A> 1A; 2B> 1A; 2A> 1B; and 2B> 1B. Low-intensity ultrasound enabled the highest methylene blue dispersion when polymethylmethacrylate bead was positioned superficial; bead depth associated with high-intensity ultrasound did not influence methylene blue dispersion.