2005
DOI: 10.2214/ajr.184.1.01840180
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Sonography of Full-Thickness Supraspinatus Tears: Comparison of Patient Positioning Technique with Surgical Correlation

Abstract: Sonography reliably detects and quantifies supraspinatus tears. Both the Crass and the modified Crass positions reflected the true size of supraspinatus tears in the transverse plane. In the sagittal plane, the Crass position is the more useful to quantify supraspinatus tears because the modified Crass position overestimates the size of such tears.

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Cited by 64 publications
(26 citation statements)
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“…In this position, the greater tuberosity is now located more upward and lateral than with the Crass position as the degree of internal rotation is decreased to allow easy visualization of the rotator interval with little patient discomfort. 7) In this modified Crass position, the supraspinatus tendon does not run vertically below the acromioclavicular joint any more but 45 o in a plane inferior and lateral from the acromioclavicular joint (Fig. 12).…”
Section: Lateralmentioning
confidence: 98%
“…In this position, the greater tuberosity is now located more upward and lateral than with the Crass position as the degree of internal rotation is decreased to allow easy visualization of the rotator interval with little patient discomfort. 7) In this modified Crass position, the supraspinatus tendon does not run vertically below the acromioclavicular joint any more but 45 o in a plane inferior and lateral from the acromioclavicular joint (Fig. 12).…”
Section: Lateralmentioning
confidence: 98%
“…The primary advantage of the Crass position is easy and reliable localization of the greater tuberosity; however, disadvantages include poor visualization of the rotator interval and patient discomfort. Because of this, the author uses a modifi ed Crass position, where the patient's ipsilateral hand is placed on the closest hip or buttock region ( Fig 8a ), which allows easy visualization of the rotator interval with little patient discomfort ( 18 ). In this position, the greater tuberosity is now located more lateral than with the Crass position as the degree of internal rotation is decreased.…”
Section: Figurementioning
confidence: 99%
“…Diferentes estudos revelaram uma sensibilidade de 90 a 95% e especificidade de quase 90% do US para a avaliação de rupturas parciais e totais de tendões do manguito rotador (5) . As rupturas do tendão supra-espinhoso ocorrem mais comumente na superfície anterior do tendão e podem ser completas ou incompletas.…”
Section: Médica Assistente Doutora Da Disciplina De Reumatologia Da Uunclassified
“…Figura 1 -US de ombro: A -Descontinuidade completa do tendão supra-espinhoso com comunicação da superfície bursal com a articular; B -Irregularidade da superfície bursal do supra-espinhoso caracterizando ruptura parcial A avaliação do tendão supra-espinhoso em toda a sua extensão, com o posicionamento do transdutor tanto transversalmente quanto sagitalmente ao maior eixo do tendão, é importante para uma adequada avaliação da presença ou não de lesão (5) . A presença de líquido na articulação glenoumeral, na bursa subacromial e na bainha do bíceps, a perda do contorno do tendão, pequenas áreas de calcificação (pequenos focos ecogênicos dentro do tendão que projetam uma sombra acústica) e de sinovite (espessamento da cápsula articular) também sugerem que possa haver alguma ruptura de um dos tendões do manguito rotador (6) .…”
Section: Músculosunclassified
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