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1.
Ciênc. rural ; 40(8): 1786-1790, ago. 2010. ilus
Article in English | LILACS | ID: lil-558772

ABSTRACT

Twenty Thoroughbred racehorses were ultrasonographically evaluated to determine the relation between normal values of the cross-sectional area (CSA) of the right and left forelimbs superficial digital flexor tendons (SDFT) in the metacarpal region for trained and untrained Thoroughbreds racehorses. Ultrasonography revealed that CSA at 26cm distal to the accessory carpal bone is larger than other proximal levels, for either left or right forelimbs. In addition, the CSA at 2, 4, 6, 8, 10, 12 and 14cm distal to the accessory carpal bone of the left forelimb are larger (P<0.05) for trained horses when compared with untrained horses. On the other hand, there was no significant difference (P>0.05) between left and right forelimb for CSA of the SDFT, at any level, for either trained or untrained horses, and there was no significant difference between untrained or trained horses for the CSA of right forelimb. In conclusion, the CSA of the left forelimb SDFT for horses that had been in continuous race training remains larger when they were trained anticlockwise, contrary to horses that had not been training for more than one year.


Vinte cavalos da raça Puro Sangue Inglês de corrida foram submetidos a exame ultrassonográfico, com o intuito de determinar a relação entre os valores normais da área do tendão flexor digital superficial (TFDS) na região metacarpiana dos membros torácicos direito e esquerdo, em cavalos com e sem treinamento. O exame ultrassonográfico revelou que a área do tendão 26cm distal ao osso acessório do carpo é maior em comparação com as alturas proximais, tanto nos membros torácicos esquerdos, como nos membros torácicos direitos. Além disso, a área do TFDS nas alturas 2, 4, 6, 8, 10, 12 e 14cm, no membro torácico esquerdo, é maior (P<0,05) nos cavalos em treinamento do que nos cavalos sem treinamento. Entretanto, não houve diferença (P>0,05) nas áreas do TFDS entre os membros torácicos direito e esquerdo, tanto para os animais em treinamento, como para os animais sem treinamento. Também não foi encontrada diferença significativa em comparação com o membro direito dos cavalos em treinamento e sem treinamento. Conclui-se que os cavalos mantidos em treinamento permanecem com a área do TFDS maior no membro torácico esquerdo quando são treinados no sentido anti-horário das pistas de corrida, diferentemente do que ocorre com os cavalos afastados do esporte por mais de um ano.

2.
Int. j. morphol ; 27(3): 791-800, sept. 2009. ilus
Article in English | LILACS | ID: lil-598938

ABSTRACT

The objective of this study was to evaluate morphological changes of the median nerve in patients with carpal tunnel syndrome (CTS) and healthy controls, to correlate the MRI findings of wrists. This study compared not only morphological changes of the median nerve and also displayed descriptively structures in carpal tunnel between patients diagnosed with idopathic CTS and healthy controls. Our study involved 60 hand, 30 of hand were evaluated diagnosed with idiopathic CTS and 30 hand as healthy controls bilaterally. Two provocative tests (Phalen's and Tinel's test) were performed on each hand for both the patient group (60 wrist) and the control group (60 wrist). With regard to Phalen and Tinel's test results, 24 and 26 wrists were excluded from patient and control groups respectively. Totally 70 wrists were evaluated, and in terms of cross-sectional area of median nerve at the level of distal radio-ulnar joint, pisiform bone and the hook of hamate bone by MRI in the patient and control groups. In addition to evaluation of cross-sectional area of median nerve, we determined signal intensity of wrists and different localization of the median nerve in the carpal tunnel. Cross-sectional area of the median nerve measured by wrist magnetic resonance at the level of metacarpal bones and signal intensity of wrists may be considered as a valuable indicator to determine patients referred with idiopathic CTS.


El objetivo de este estudio fue evaluar los cambios morfológicos del nervio mediano en pacientes con síndrome del túnel carpiano (STC) y controles sanos, para correlacionar los hallazgos de las RM de muñeca. Este estudio comparó no sólo los cambios morfológicos del nervio mediano, también se muestran en forma descriptiva estructuras del túnel carpiano entre los pacientes diagnosticados con STC idiopatico y controles sanos. Nuestro estudio incluyó 60 manos, 30 manos fueron evaluados con diagnóstico de STC idiopático y 30 manos como controles sanos, bilateralmente. Dos pruebas de provocación (prueba de Phalen y prueba de Tinel) se realizaron en cada mano para el grupo de pacientes (60 muñecas) y el grupo control (60 muñecas). En lo que respecta a los resultados de prueba de Phalen y prueba de Tinel, 24 y 26 muñecas fueron excluidas del grupo paciente y grupo control respectivamente. En total 70 muñecas fueron evaluadas, en términos de la sección transversal del área del nervio mediano a nivel de la articulación radio-ulnar distal, el hueso pisiforme y el hamulus del hueso hamate por medio de resonancia magnética en gruposs paciente y control. Además de la evaluación de la sección del área del nervio mediano, se determinó la intensidad de la señal de la muñeca y las diferentes localizaciones del nervio mediano en el túnel carpiano. La sección transversal del área del nervio mediano medida por medio de resonancia magnética de muñeca a nivel de los huesos metacarpianos y la intensidad de la señal de las muñecas pueden ser considerados como un valioso indicador al evaluar pacientes referidos con STC idiopático.


Subject(s)
Humans , Female , Wrist/anatomy & histology , Wrist/innervation , Wrist , Carpal Tunnel Syndrome/diagnosis , Carpal Tunnel Syndrome/etiology , Carpal Tunnel Syndrome , Outcome Assessment, Health Care/methods , Magnetic Resonance Imaging/methods , Ulnar Nerve/anatomy & histology , Ulnar Nerve , Median Nerve/anatomy & histology , Median Nerve/injuries , Median Nerve , Radial Nerve/anatomy & histology , Radial Nerve , Paresthesia/diagnosis
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