Authors: C. A. Tranquille, T. D. H. Parkin and R. C. Murray
Journal: Equine Veterinary Journal


Reasons for performing the study: Lateral condylar (LC) fractures of the third metacarpus (McIII) are a common reason for euthanasia in racehorses, and may be the result of repetitive overloading or cumulative pathological change. Magnetic resonance imaging (MRI) allows monitoring of bone and cartilage to detect pathological and adaptive changes that may be precursors of fracture.

Objectives: To describe bone and cartilage MRI features in the distal condyles of McIII of Thoroughbred racehorses, with and without condylar fracture.

Category: Bone - Equine - Imaging - MRI - Traumatology
Authors: S. Dyson, T. Blunden and R. Murray
Journal: Equine Veterinary Journal


Reasons for performing study: There is limited knowledge about both histological features in early navicular disease and what histological features are represented by increased signal intensity in fat-suppressed magnetic resonance (MR) images of the navicular bone.

Objective: To characterise increased signal intensity in the spongiosa of the navicular bone in fat-suppressed MR images and to compare this with histopathology; and to compare objective grading of all aspects of the navicular bone on MR images with histological findings.

Category: Equine - Imaging - Lameness - MRI
Authors: M. A. Smith, S. J. Dyson and R. C. Murray
Journal: Equine Veterinary Journal


Reasons for performing study: To determine the reliability of 2 magnetic resonance imaging (MRI) systems for detection of cartilage and bone lesions of the equine fetlock.

Authors: S. Claerhoudt, H. J. Bergman, H. Van Der Veen, L. Duchateau, E. V. Raes and J. H. SAUNDERS
Journal: Equine Veterinary Journal


Reasons for performing study: Distal border synovial invaginations of the distal sesamoid bone are radiographically assessed during the selection process of horses admitted as breeding stallions or in purchase examinations. Nowadays, many moderately or some deeply penetrating proximally enlarged synovial invaginations are considered as moderate or severe radiographic findings.

Authors: El-Sayed A.A. El-Shafaey, Gamal I.A. Karrouf, Adel E.I. Zaghloul
Journal: Journal of Equine Veterinary Science

Little is known about using magnetic resonance imaging (MRI) in evaluating the healing properties of superficial digital flexor tenorrhaphy in equines. The present study was designed to carry out in vivo comparative evaluation of normal and repaired superficial digital flexor tendon (SDFT) in donkeys, based on MRI, ultrasonography, clinical and histopathological features.

Category: Equine - Imaging - MRI - Tendon - Ultrasound
Authors: Maureen E. Holowinski, Mauricio Solano, Louise Maranda and José M. García-López
Journal: Veterinary Radiology and Ultrasound

Adhesions occur in the navicular bursa between the deep digital flexor tendon (DDFT) and other structures. Our objectives were to describe the appearance of navicular bursa adhesions on high-field magnetic resonance (MR) images, to compare these findings to findings at navicular bursoscopy, and to determine the prevalence of lesions in the remainder of the podotrochlear apparatus. Sixteen forelimbs from 14 horses that underwent MR imaging and navicular bursoscopy were evaluated.

Category: Equine - Imaging - MRI
Authors: Jean-Michel Vandeweerd, Nathalie Kirschvink, Benoit Muylkens, Eric Depiereux, Peter Clegg, Nicolas Herteman, Matthieu Lamberts, Pierre Bonnet, Jean-Francois Nisolle
Journal: Veterinary Journal

Although ovine stifle models are commonly used to study osteoarthritis, meniscal pathology and cruciate ligament injuries and repair, there is little information about the anatomy of the joint or techniques for synovial injections. The objectives of this study were to improve anatomical knowledge of the synovial cavities of the ovine knee and to compare intra-articular injection techniques.

Authors: Laurence Evrard, Géraldine Bolen, Nathalie Maquet, Valeria Busoni
Journal: Journal of Equine Veterinary Science

This study describes ultrasound (US) technique and reference images of the equine distal interphalangeal joint collateral ligaments (CLs), and evaluates the portion of the CLs assessable by US in a series of normal forelimbs. Transverse and longitudinal US images were obtained on five healthy horses and on 25 equine cadaver forelimbs. On six limbs, a needle was placed under US-guidance at the distal limit of visualization of each CL, and the portion of CL visible at US was evaluated on computed tomographic (CT) images.

Authors: J. Lacy Kamm, Laurie R. Goodrich, Natasha M. Werpy and C. Wayne McIlwraith
Journal: Veterinary Surgery


To describe regions of the thoracic and pelvic limb proximal interphalangeal (PIP) joints that are arthroscopically accessible and identify soft tissue structures that should be avoided during arthroscope and instrument placement.

Study Design

Experimental ex vivo descriptive study.


Horses (n = 15).


Journal: Equine Veterinary Journal

Reasons for performing study: Mesenchymal stem cells (MSCs) are commonly injected intralesionally for treatment of soft tissue injuries in the horse. Alternative routes of administration would be beneficial for treatment of lesions that cannot be accessed directly or to limit needle-induced iatrogenic damage to the surrounding tissue.