Radiography

Authors: Alexander J. Daniel, BVetMed; Carter E. Judy, DVM, DACVS; Mark C. Rick, DVM; Travis C. Saveraid, DVM, DACVR; Douglas J. Herthel, DVM
Journal: Journal of the American Veterinary Medical Association

Objective—To describe pathological findings identified with MRI in the distal tarsal bones of horses with unilateral hind limb lameness attributable to tarsal pain and to compare the usefulness of MRI with that of radiography and nuclear scintigraphy in evaluation of this region.

Design—Retrospective case series.

Animals—20 lame horses.

Authors: M. BIGGI, S. DYSON
Journal: Equine Veterinary Journal

Reasons for performing study: The significance of distal border fragments of the navicular bone is not well understood. There are also no objective data about changes in thickness and proximal/distal extension of the palmar cortex of the navicular bone.

Objectives: To describe the distribution of distal border fragments and their association with other radiological abnormalities of the navicular bone and describe the shape of the navicular bone in sound horses and horses with foot-related lameness, including navicular pathology.

Category: Bone - Equine - Radiography
Authors: Bruno Carvalho Menarim, Vânia Maria Vasconcelos Machado, Luís Emiliano Cisneros Alvarez, Rodrigo Carneiro, Leandro Busch, Luiz Carlos Vulcano
Journal: Journal of Equine Veterinary Science

Barrel racing is one of the most popular uses of the American Quarter horse in North and South America. Although injury to the metacarpophalangeal joint frequently occurs in this sport, there is limited information describing the nature of these injuries. The aim of this study was to determine the most common radiographic abnormalities in barrel racing horses with lameness referable to the metacarpophalangeal joint. Lameness examinations were performed on 63 barrel racing horses. Those found to be lame were subjected to radiographic examination.

Authors: E. K. CONTINO, R. D. PARK, C. W. MC ILWRAITH
Journal: Equine Veterinary Journal

Reasons for performing study: There have been many studies that document radiographic findings in young Thoroughbred and Standardbred horses. No such studies have been performed in Quarter Horses.

Objective: To describe the prevalence of radiographic changes in the stifles, tarsi, carpi and fetlocks of young Quarter Horses intended for cutting.

Authors: MARIEKE ZIMMERMAN, SUE DYSON and RACHEL MURRAY
Journal: Veterinary Radiology and Ultrasound

Back pain is common in horses, but there has been no large-scale in-depth study describing radiographic changes of the spinous processes, the relationship between radiographic and scintigraphic findings, and the effect of size, age, breed, or discipline.

Authors: CAROLINA I. URRACA DEL JUNCO, DARREN J. SHAW, MARTIN P. WEAVER and TOBIAS SCHWARZ
Journal: Veterinary Radiology and Ultrasound

Magnetic susceptibility artifacts as a result of metal debris from shoeing are a common problem in magnetic resonance imaging of the equine foot. Our purpose was to determine the suitability of radiography as a screening tool for the presence and location of metallic particles in the equine foot and to predict the size of the resultant magnetic susceptibility artifact. Radiography had 100% sensitivity for detection of metal particles ≥1 mm diameter.

Authors: SUE DYSON, ANNAMARIA NAGY, RACHEL MURRAY
Journal: Veterinary Radiology and Ultrasound

Eight sports horses with unilateral (4) or bilateral (3) forelimb or unilateral hindlimb (1) lameness had subtle radiologic abnormalities of the subchondral bone of the sagittal groove of the proximal phalanx associated with moderate or intense increased radiopharmaceutical uptake. High-field or low-field magnetic resonance (MR) imaging confirmed the presence of a fissure fracture or subchondral and trabecular bone trauma. Seven of eight lesions were located approximately midway between the dorsal and palmar cortices of the proximal phalanx; the eighth was sited more dorsally.

Authors: Thomas O'Brien, Theresa A. Baker, Sabrina H. Brounts, Susannah J. Sample, Mark D. Markel, Mary C. Scollay, Patricia Marquis and Peter Muir
Journal: Veterinary Surgery

To compare digital radiography (DR), computed tomography (CT), and magnetic resonance imaging (MRI) for detection of pathology of the distal aspect of the third metacarpal bone (MC3) and to assess whether arthrography would improve detection of articular cartilage or subchondral bone cracking.
Study Design
Cross-sectional study.
Sample Population
Limb specimens from 17 Thoroughbred horses after catastrophic injury and 4 age-matched control horses.
Methods

Authors: Francesca Beccati, DVM; Marco Pepe, DVM, PhD; Antonio Di Meo, DVM; Sveva Davanzo, DVM, PhD; Franco Moriconi, DVM
Journal: American Journal of Veterinary Research

Objective—To evaluate changes in the cortical bone of the proximal phalanx of the fore-limbs of Thoroughbreds in response to training.

Animals—Twenty-seven 2-year-old Thoroughbreds (20 females, 2 males, and 5 geldings).

Category: Bone - Equine - Radiography
Authors: Antje Hinz Med Vet, Andrew T. Fischer Jr DVM, Diplomate ACVS
Journal: Veterinary Surgery

Objective
To compare the accuracy of ultrasonographic and radiographic examination for evaluation of articular lesions in horses.
Study Design
Cross-sectional study.
Animals
Horses (n = 137) with articular lesions.
Methods
Radiographic and ultrasonographic examinations of the affected joint(s) were performed before diagnostic or therapeutic arthroscopic surgery. Findings were recorded and compared to lesions identified during arthroscopy.
Results