Traumatology

Authors: M. M. Misheff, G. R. Alexander, G. R. Hirst
Journal: Equine Veterinary Education

This paper provides relevant information for veterinarians responsible for treatment of endurance horses, including a retrospective study of fractures in endurance horses presenting to one referral hospital and to treatment clinics at 3 different race venues. Treatment and case outcome were also noted. The information presented provides clinicians working with high level endurance horses increased awareness of common sites of fractures, of prefracture stress related bone injury within this population of athletes and guidelines in order to manage them more effectively.

Authors: M. Kristoffersen, U. Hetzel, T. D. H. Parkin, E. R. Singer
Journal: Veterinary and Comparative Orthopaedics and Traumatology

Objectives: To investigate whether microfractures and alterations in the trabecular bone area are associated with catastrophic bi-axial proximal sesamoid bone fractures (PSBF). Methods: Proximal sesamoid bones (PSB) from 10 racehorses with PSBF and from 10 control racehorses without musculoskeletal injury were examined using the bulk basic fuchsin method. Bone histomorphometric and microfracture analysis was performed, and cases and controls compared using two-sample t-test, paired t-test, and Mann-Whitney U test.

Category: Bone - Equine - Traumatology
Authors: H. D. O'NEILL, B. M. BLADON
Journal: Equine Veterinary Journal

There is limited information on the treatment of lateral malleolus (LM) fractures in the horse, with no previously published case series for the outcome following arthroscopic removal of such fractures. This report reviews and evaluates findings of a retrospective study of 13 horses admitted to a private equine referral hospital over a 10 year period (1999–2009) that underwent arthroscopic removal of fractures of the LM.

Authors: R. A. PARKER, B. M. BLADON, T. D. H. PARKIN, B. S. L. FRASER
Journal: Equine Veterinary Journal

Reasons for performing study: Increased radio-isotope uptake (IRU) in the subchondral bone of the plantaro-lateral condyle of the third metatarsus (MTIII) is a commonly reported scintigraphic finding and potential cause of lameness in UK Thoroughbred racehorses in training and has not been fully documented.

Objectives: To characterise lameness attributable to IRU of the subchondral bone of MTIII, compare the scintigraphic findings of these horses with a normal population and evaluate the use of scintigraphy as an indicator of prognosis.

Category: Bone - Equine - Traumatology
Authors: S. DYSON, V. BROWN, S. COLLINS, R. MURRAY
Journal: Equine Veterinary Journal

Reasons for performing study: Associations between degree of ossification of the cartilages of the foot and injuries to other structures of the foot have been suggested, but have not been investigated by large scale studies.

Authors: Ty W. Wallis DVM, MS, DACVS, Gary M. Baxter VMD, MS, DACVS, Natasha M. Werpy DVM, DACVR, Gary L. Mason DVM, PhD, DACVP, David D. Frisbie DVM, PhD, DACVS and Nicolai Jarloev DVM, PhD
Journal: Journal of Equine Veterinary Science

The objective of the present study was to determine the efficacy of urinary bladder matrix (UBM) in collagenase-induced superficial digital flexor (SDF) tendonitis by using clinical, ultrasonographic, and histologic data. A total of eight healthy adult horses were used in this study. Bilateral forelimb SDF tendonitis was created in the horses by injecting collagenase. After 14 days, one randomly selected forelimb SDF tendon was blindly treated with UBM and the opposite tendon was treated with a control (saline).

Authors: Adrienne S. Bhatnagar BS, R. Scott Pleasant DVM, MS, DACVS, John J. Dascanio VMD, DABVP, DACT, Stephanie R. Lewis BVSc, A. Grey DVM, Olivia E. Schroeder VMD, Kristine Doyle MS, Jake Hall BS and Rebecca K. Splan MS, PhD
Journal: Journal of Equine Veterinary Science

This study evaluated onset and incidence of palmar process fractures in foals and investigated corresponding changes in hoof conformation. Radiographs of 17 warmblood foals were taken at 1 week and at 2, 4, 6, 8, and 12 months of age and examined for evidence of palmar process fractures. Hoof parameters were measured from the radiographs, and comparisons were made between fractured and nonfractured feet. All foals suffered at least one fracture during the study period, with an average age of 3.68 ± 0.20 months at fracture occurrence.

Authors: M. KRISTOFFERSEN*, T. D. H. PARKIN † and E. R. SINGER
Journal: Equine Veterinary Journal

Reason for performing study: Catastrophic biaxial proximal sesamoid bone fractures (PSBF) have not yet been described in detail in the UK racing population.

Objectives: To determine the incidence and relative risk (RR) of PSBF in different types of racing in the UK; and to describe horse-level characteristics and racing histories of horses sustaining these injuries.

Category: Equine - Traumatology
Authors: A. E. Poulin Braim*, R. J. W. Bell, J. A. Textor † , W. Y. Lo, S. M. Puchalski † and L. D. Galuppo †
Journal: Equine Veterinary Education

A 2-year-old Thoroughbred filly presented to the William R. Pritchard Veterinary Medical Teaching Hospital at the University of California at Davis for whole body nuclear scintigraphic evaluation after an acute onset of nonweightbearing right hindlimb lameness post race. The use of computed tomography (CT) enabled visualisation of additional pathology that was not initially appreciable using combined imaging modalities of nuclear scintigraphy and digital radiography, which ultimately altered the selected course of treatment.

Authors: C. Kearney, H. McAllister and F. Jenner
Journal: Equine Veterinary Education

A comminuted fracture of the central tarsal bone, fragmentation of the fourth tarsal bone and associated joint instability was diagnosed in a 14-year-old Sport Horse mare who presented for investigation of acute nonweightbearing hindlimb lameness. The mare responded well to conservative management and, unlike previously reported cases of similar injuries, returned to a similar level of athletic activity.

Category: Bone - Equine - Traumatology