Banca de DEFESA: FERNANDA MAFRA CAJU

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : FERNANDA MAFRA CAJU
DATE: 31/08/2023
TIME: 09:30
LOCAL: Google Meet - https://meet.google.com/xmc-khwf-zib
TITLE:

Radiographic and ultrasonographic evaluation of the thoracolumbar spine in vaquejada mares

 

KEY WORDS:

sport, mares, clinic, image, musculoskeletal

PAGES: 90
BIG AREA: Ciências Agrárias
AREA: Medicina Veterinária
SUBÁREA: Clínica e Cirurgia Animal
SPECIALTY: Clínica Veterinária
SUMMARY:

 

Vaquejada is an equestrian sport traditionally practiced in Brazil, with championships held weekly throughout the year. Sports and training programs can predispose athletic animals to musculoskeletal injuries and lameness. Studies carried out in other equestrian modalities have shown the occurrence of thoracolumbar injuries in athletic animals. In vaquejada, there are few studies on this subject, thus, the objective was to diagnose injuries of the thoracolumbar spine in vaquejada horses in the state of Pernambuco and to verify the implications of the activity of “pulling” on the epaxial muscles of the thoracolumbar spine of the animals. 10 left-drawn mares (GI), 10 right-drawn mares (GII) and 10 pasture mares (GIII) were evaluated, all clinically evaluated and submitted to clinical, radiographic and ultrasonographic examination. Measurements of the Longuissimus dorsi (MLD) and Multifidus (MM) muscles were performed at T18, L1 and L3, using ultrasound. The lesions found in the thoracolumbar spine of the research animals were Kisses spines (KS); spinous process irregularity (SP); loss of PE bone line continuity; bone fragment in PE; sclerosis in PE; osteolysis in PE; periosteal reaction in PE body; enthesiophyte in PE; PE approximation; spondylosis of vertebral bodies; intervertebral osteoarthritis (IOA); supraspinous ligament desmitis (DLSE); and Myositis. The results of measuring the Multifidus muscle showed no significant difference in volume between the T18, L1 and L3 regions or between the antimeres in the animals of the three groups. However, there was a trend towards greater muscle volume in the left antimere in GI (GI= left antimere 9.07cm2 / right antimere 8.92cm2) and in the right antimere in GII (GII = left antimere 8.37cm2 / right antimere 8.59cm2) and GIII (GIII = left antimer 8.96cm2 / right antimer 9.14cm2). Regarding the measurement of the Longuissimus dorsi muscle (MLD) to compare the thickness in the regions of the vertebrae T18, L1 and L3, the animals from GII had a significantly greater thickness (p=0.007) in L3 on the right antimere; in animals from GIII, MLD was significantly higher in L3 on the right side (p=0.045) and on the left side (p=0.0069); in GI, there was no significant difference regarding the thickness of the MLD between the T18, L1 and L3 regions, however, there was a trend towards greater muscle volume in the L3 region (GI=right MLD 9.217cm/left MLD 9.145cm).  For the MLD, greater thickness was found in the right antimere, on the horse's exit side, in GI animals (left) and in the left antimere of GII animals (right). Lesions found in animals from GI and GII were greater in extent and intensity than in GIII, but mares never ridden also showed injuries. Therefore, an anatomical predisposition of the species is suggested, without discarding the influence of activity on the worsening of thoracolumbar injuries. The movement of the vaquejada animals, from the start of the race to the ox pulling, showed greater demand for the Longuíssimus dorsi muscle on the horse's starting side and the Multifidus muscle on the opposite antimere. Intervertebral osteoarthritis, in turn, was more severe in the antimere ipsilateral to the horse's exit, where the lateral flexion/rotation is performed, with greater overload in T18/L1, L1/L2 and L2/L3, during the ox's pulling movement. The results elucidate the direct relationship between sports activity and/or training with thoracolumbar injuries in horses and support the construction of diagnosis, treatment, preventive and rehabilitation measures for athletic horses.

COMMITTEE MEMBERS:
Presidente - HUBER RIZZO
Externo ao Programa - 1646206 - GUSTAVO FERRER CARNEIRO - UFRPEExterno à Instituição - ANDRESSA BATISTA DA SILVEIRA XAVIER - UFMG
Externa à Instituição - ELDINE GOMES DE MIRANDA NETO - UFCG
Externa à Instituição - NATALIA MATOS SOUZA AZEVEDO - UFPB