Ex vivo evaluation of the soft tissue components of the equine stifle using 3 Tesla magnetic resonance imaging under flexion, extension, and loading.

Autor: Stedman JM; Department of Clinical Sciences, College of Veterinary Medicine, Kansas State University, Manhattan, Kansas, USA., Lutter JD; Department of Clinical Sciences, College of Veterinary Medicine, Kansas State University, Manhattan, Kansas, USA., Hallman C; Department of Clinical Sciences, College of Veterinary Medicine, Kansas State University, Manhattan, Kansas, USA., Laverty S; Comparative Orthopaedic Research Laboratory, Département des Sciences Cliniques, Faculté de médecine vétérinaire, Université de Montréal, Saint Hyacinthe, Quebec, Canada., Richard H; Comparative Orthopaedic Research Laboratory, Département des Sciences Cliniques, Faculté de médecine vétérinaire, Université de Montréal, Saint Hyacinthe, Quebec, Canada., Santschi EM; Department of Clinical Sciences, College of Veterinary Medicine, Kansas State University, Manhattan, Kansas, USA.
Jazyk: angličtina
Zdroj: Veterinary radiology & ultrasound : the official journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association [Vet Radiol Ultrasound] 2024 Sep; Vol. 65 (5), pp. 613-627. Date of Electronic Publication: 2024 Jul 06.
DOI: 10.1111/vru.13405
Abstrakt: High-field MRI of the equine stifle provides high-resolution information about soft tissues that is useful in the diagnosis of stifle lameness. The aim of this prospective anatomic study was to describe the appearance, position, size, and shape of the equine femorotibial ligaments, meniscal ligaments, and menisci using 3 Tesla MRI under extended, extended-loaded, and flexed conditions. Additionally, histologic examination of the collateral and cruciate ligaments (CLs) of a single stifle was performed to compare with MRI images. In extension, mild variations in MRI signal intensity were apparent in the CLs, and the cranial had two distinct longitudinal regions indicating two ligament bundles. Flexion had minor effects on CL signal intensity and altered the tibial angles of attachment. Histology indicated that both CLs were comprised of two fiber bundles. The collateral ligaments were the same low-signal intensity. The medial collateral ligament had a smaller cross-sectional area than the lateral, and flexion increased the length of the medial collateral ligament and the cross-sectional area of the lateral. Low loads in extension did not affect the MRI appearance of stifle soft tissues. Flexion of the stifle impacted cruciate ligament insertion angles and the size and shape of collateral ligaments. This study provides support for the use of MRI to understand the anatomy and function of stifle ligaments.
(© 2024 American College of Veterinary Radiology.)
Databáze: MEDLINE
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