Comparative Study

Authors: Meehan, L.; Dyson, S.; Murray, R.
Journal: Equine Veterinary Journal

Reasons for performing study: Clinical, radiographic and scintigraphic signs associated with spondylosis of the equine thoracolumbar spine have been poorly documented.

Objectives: To establish an objective radiographic and scintigraphic grading system for spondylosis lesions; to estimate the prevalence of spondylosis in a population of horses with back pain; and to compare the results of radiography and scintigraphy

Authors: Withers, J.M.; Voûte, L.C.; Lischer, C.J.
Journal: Equine Veterinary Education

Interpretation of cervical radiographs can be challenging due to the complex anatomy and superimposition of osseous structures on either side of the vertebrae. This report describes the investigation of neck pain in a Thoroughbred gelding following a traumatic fall. Several imaging modalities were used to demonstrate the presence of a fracture of the left cranial articular process of the fourth cervical vertebra (C4), including nuclear scintigraphy, ultrasonography, oblique radiographic projections and a novel cineradiographic technique.

Authors: Katrien Vanderperren, DVM, PhD; Ann M. Martens, DVM, PhD; Jeroen Declercq, DVM; Luc Duchateau, PhD; Jimmy H. Saunders, DVM, PhD
Journal: Journal of the American Veterinary Medical Association

Objective—To compare clinical usefulness of ultrasonography versus radiography for detection of fragmentation of the dorsal aspect of the metacarpophalangeal (MCP) and metatarsophalangeal (MTP) joints in horses.

Design—Cross-sectional study.

Animals—36 horses with fragmentation of the MCP (n = 19) and MTP (29) joints.

Authors: FLORIAN GEBUREK, DrMedVet, ANNA K. RÖTTING, DrMedVet, PhD, Diplomate ACVS & ECVS , and PETER M. STADLER, Prof DrMedVet
Journal: Veterinary Surgery

Objective—To assess agreement between ultrasonography (transcutaneous and transrectal) and standing radiography in horses with fractures in the pelvic region and disorders of the coxofemoral joint.

Study Design—Case series.

Animals—Warmblood horses (n=23) and 2 ponies.

Methods—Medical records (1999–2008) of equids with pelvic or coxofemoral disorders that had pelvic radiography and ultrasonography were retrieved and results of both techniques compared.

Authors: Groth, A.M.; May, S.A.; Weaver, M.P.; Weller, R.
Journal: Equine Veterinary Journal

Reasons for performing study: Criteria for the radiographic evaluation of navicular bones in horses have been published to standardise classification of radiographic signs. However, intra- and interobserver agreement have not been established.

Authors: Relave, F.; Meulyzer, M.; Alexander, K.; Beauchamp, G.; Marcoux, M.
Journal: Equine Veterinary Journal

Reasons for performing study: Lesions located on the medial malleolus of the tarsocrural joint can be difficult to image radiographically. Ultrasonography allows evaluation of articular cartilage and subchondral bone.

Objectives: To compare dorso30° lateral-plantaromedial-oblique (DL-PlMO) and dorso45° views to detect lesions on the medial malleolus, to validate the use of ultrasonography to show lesions in the tarsocrural joint and to compare its sensitivity to radiography.

Authors: Blunden, A.; Murray, R.; Dyson, S.
Journal: Equine Veterinary Journal

Reasons for performing study: Lameness associated with lesions of the deep digital flexor tendon (DDFT) in the digit is now recognised as an important cause of lameness, but there is currently limited information about the pathological nature of the lesions.

Objectives: To compare: signal intensity changes on magnetic resonance images with histopathology; and histopathological changes in the DDFT from horses with no history of foot-related lameness (Group C) and horses with lesions of the DDFT confirmed using magnetic resonance imaging (MRI) (Group D).

Authors: Dyson, S.; Blunden, T.; Murray, R.
Journal: Equine Veterinary Journal

Reasons for performing study: Magnetic resonance imaging (MRI) is used with increasing frequency to diagnose injuries of the collateral ligaments (CLs) of the distal interphalangeal (DIP) joint, but the results have not been verified by histology and the mechanism of injury is poorly understood. Hypothesis: Abnormal signal intensity and tissue contour represents change in tissue structure detected on histology. Objectives: To compare results in horses free from and those with chronic lameness and to describe possible progression of lesions.