Authors: Elwyn C. Firth, Christopher W. Rogers, P. Rene van Weeren, Albert Barneveld, C. Wayne McIlwraith, Christopher E. Kawcak, Allen E. Goodship, Roger K.W. Smith
Journal: The Veterinary Journal

This study recorded the response to training of the diaphysis of the proximal phalangeal bone and the third metacarpal bone (Mc3) and the Mc3 proximal metaphysis. Nineteen 2- and 3-year old horses in training were exposed either to spontaneous exercise at pasture (PASTEX group) or additional imposed exercise (CONDEX group) from a very young age. Quantitative computed tomography scans were analysed for bone mineral content, size, bone mineral density, periosteal and endosteal circumference, cortical thickness and an estimate of bone strength.

Category: Bone - Equine
Authors: Woong Kim, PhD; Chris E. Kawcak, DVM, PhD; C. Wayne McIlwraith, BVSc, PhD; Elwyn C. Firth, BVSc, PhD; Neil D. Broom, PhD
Journal: American Journal of Veterinary Research

Objective—To describe and measure histologic features of midcarpal joint cartilage defects in Thoroughbreds and evaluate the influence of early conditioning exercise on defect development.

Sample—24 midcarpal joints from twelve 18-month-old Thoroughbreds.

Authors: Lélia Bertoni, DVM; Daniela Forresu, DVM; Virginie Coudry, DVM; Fabrice Audigie, DVM, PhD; Jean-Marie Denoix, DVM, PhD
Journal: Journal of the American Veterinary Medical Association

Objective—To characterize the clinical features, diagnostic procedures, treatment, and outcome for horses with an exostosis on the palmar or plantar cortex of the third metacarpal bone (MC3) or third metatarsal bone (MT3).

Design—Retrospective case series.

Animals—16 horses.

Category: Bone - Equine
Authors: Alastair T. Kay BVSc, MS, Diplomate ACVS, Robert J. Hunt DVM, MS, Diplomate ACVS, Dwayne H. Rodgerson DVM, MS, Diplomate ACVS, Michael A. Spirito DVM, Elizabeth M. Santschi DVM, Diplomate ACVS, Richard J. Payne BSc, BVSc, Cert ES (Orth)
Journal: Veterinary Surgery

To describe the characteristics of osteomyelitis lesions of the patella and to report short- and long-term outcome after treatment in 8 foals.
Study Design
Retrospective case series.
Foals (n = 8).

Category: Bone - Equine
Authors: Timothy B. Lescun, BVSc, MS; Elizabeth A. Frank, DVM; Joshua R. Zacharias, DVM, MS; Joanne K. Daggy, PhD; George E. Moore, DVM, PhD
Journal: American Journal of Veterinary Research

Objective: To compare the bone temperature and final hole dimensions associated with sequential overdrilling (SO) and single 6.2-mm drill bit (S6.2DB) methods used to create transcortical holes in the third metacarpal bones (MCIIIs) of horse cadavers.

Sample—60 MCIIIs from 30 horse cadavers.

Category: Bone - Equine
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.

Authors: R. MORGAN, S. DYSON
Journal: Equine Veterinary Journal

Reasons for performing study: Previous descriptions of incomplete longitudinal fractures and fatigue injury of the proximopalmar aspect of the third metacarpal bone (McIII) have focused on diagnostic imaging findings, especially in racehorses.

Objectives: To document the case details, clinical features, response to diagnostic analgesia, diagnostic imaging findings and follow-up data in a large group of horses with an incomplete longitudinal fracture or fatigue injury of the proximopalmar medial aspect of the McIII.

Category: Bone - Equine - Traumatology
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: M. A. Jackson, M. Kummer, J. A. Auer, P. Ossent, M. Paar, A. E. Fürst
Journal: Equine Veterinary Education


Category: Bone - Equine - Traumatology