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| Author(s): |
Anna Carolina Mazeto Ercolin
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | Pirassununga. |
| Institution: | Universidade de São Paulo (USP). Faculdade de Zootecnica e Engenharia de Alimentos (FZE/BT) |
| Defense date: | 2018-02-26 |
| Examining board members: |
Maria Cristina Ferrarini Nunes Soares Hage;
Brunna Patricia Almeida da Fonseca;
Silvio Henrique de Freitas;
Caterina Muramoto
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| Advisor: | Maria Cristina Ferrarini Nunes Soares Hage |
| Abstract | |
Spinal injuries are closely related to neuromuscular changes, so that pain and movement impairment can lead to muscle changes such as asymmetries and atrophies. On the other hand, the weakened muscles may predispose to vertebral injuries. This work used the ultrasound to investigate the presence of musculoskeletal alterations in the thoracolumbar and lumbar segments of the canine spine, associated or not to radiographic findings. In addition to the descriptive analysis, the muscle atrophy was quantified by measuring the thickness and crosssectional area (CSA) of the Multifidus dorsi muscle at the level of each vertebra between T13 and L7. Descriptive and quantitative analyzes were performed for 30 healthy and 30 symptomatic dogs, taking into account the presence of lesions, body condition score and chronicity (for animals with a history of injury). Ultrasound examination allowed the qualitative evaluation of bone surfaces of articular and spinal processes, supraspinatus, interspinous and flavum ligaments and paraspinal muscle groups involving Multifidus dorsi and Longissimus dorsi, as well as changes in echogenicity and irregularities in bone surfaces and muscle fibers. For data analysis a model with three factors was used, considering presence of injury, chronicity and score as fixed effects and the block age-sex-size as random effect. Multifidus dorsi thickness was lower in animals with lesions than in healthy dogs and in dogs with chronic lesions when compared to animals with no lesion history. This parameter did not vary between dogs with adequate score or obese dogs. There were lower CSA values for animals with chronic lesions and a strong correlation between CSA measurements on the right and left sides for the same vertebra. Ultrasonography was an interesting method to estimate muscle atrophy based on the Multifidus dorsi thickness, especially at the level of T13, L1 and L3. The use of the musculoskeletal ultrasonography in this study had a positive impact in 45% of the cases, either by contributing to the differential diagnosis and influencing the conduct in 17% of the cases or by exclusively influencing the conduct in 28%. The use of this method did not affect the diagnosis in 55% of the cases. Therefore, it is a promising method to be used in musculoskeletal investigation of the spine in specific cases. (AU) | |
| FAPESP's process: | 16/02508-0 - The role of ultrasonographyc examination in the assessment of musculoskeletal disorders in canine thoracolumbar and lumbar spine |
| Grantee: | Anna Carolina Mazeto Ercolin |
| Support Opportunities: | Scholarships in Brazil - Master |