Identification of surgically-induced longitudinal lesions of the equine deep digital flexor tendon in the digital flexor tendon sheath using contrast-enhanced ultrasonography: an ex-vivo pilot studyReportar como inadecuado




Identification of surgically-induced longitudinal lesions of the equine deep digital flexor tendon in the digital flexor tendon sheath using contrast-enhanced ultrasonography: an ex-vivo pilot study - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Acta Veterinaria Scandinavica

, 56:78

First Online: 25 November 2014Received: 24 July 2014Accepted: 11 November 2014

Abstract

BackgroundLongitudinal tears in the lateral aspect of the deep digital flexor tendon are the most common causes of pain localised to the equine digital flexor tendon sheath. However conventional ultrasonographic techniques provide limited information about acute lesions. Ultrasonographic contrast agents are newly developed materials that have contributed to advancement in human diagnostic imaging. They are currently approved for intravenous use in human and animal models. In this study we described intrathecal use in the horse. This study was undertaken to evaluate the reliability of standard and angle contrast-enhanced ultrasonography to detect and characterize surgically-induced longitudinal lesions in the deep digital flexor tendons.

In this pilot study surgically-induced lesions were created in the lateral aspect of the deep digital flexor tendon within the digital flexor tendon sheath in 10 isolated equine limbs to generate a replicable model for naturally occurring lesions. Another 10 specimens were sham operated. All the limbs were examined ultrasonographically before and shortly after the intrasynovial injection of an ultrasound contrast agent containing stabilised microbubbles. The images were blindly evaluated to detect the ability to identify surgically-created lesions. The deep digital flexor tendons were dissected and a series of slices were obtained. The depth of longitudinal defects identified with contrast-enhanced ultrasound scans was compared to the real extent of the lesions measured in the corresponding gross tendon sections.

ResultsContrast-enhanced ultrasonography with both angle and standard approach provided a significant higher proportion of correct diagnoses compared to standard and angle contrast ultrasonography p < 0.01. Contrast-enhanced ultrasonography reliably estimated the depth of surgically-induced longitudinal lesions in the deep digital flexor tendons.

ConclusionContrast-enhanced ultrasound of the digital flexor tendon sheath could be an effective tool to detect intrasynovial longitudinal tears of the deep digital flexor tendon, although an in vivo study is required to confirm these results for naturally occurring lesions.

KeywordsMicrobubbles Sulfur-hexafluoride Contrast ultrasonography Angle contrast ultrasonography Synovial sheath Intrathecal injection Cadaver limb Horses AbbreviationsDDFTDeep digital flexor tendon

USUltrasound

ACUSAngle contrast ultrasound

CEUSContrast enhanced ultrasound

ACEUSAngle contrast enhanced ultrasound

MRMagnetic resonance

Electronic supplementary materialThe online version of this article doi:10.1186-s13028-014-0078-7 contains supplementary material, which is available to authorized users.

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Autor: Andrea Bertuglia - Giulia Mollo - Michela Bullone - Barbara Riccio

Fuente: https://link.springer.com/







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