Authors: G. J. Minshall and I. M. Wright
Journal: Equine Veterinary Journal

Summary Reasons for performing study Accurate radiological and ultrasonographic descriptions of frontal plane fractures of the accessory carpal bone (ACB) are lacking, and implications of these fractures for the carpal sheath and its contents have not previously been reported.

Authors: C. M. Lund, C. A. Ragle, H. C. Rice and T. E. Wilkinson Jr
Journal: Equine Veterinary Education

Two Quarter Horses were examined at the Washington State University Veterinary Teaching Hospital with forelimb lameness. Case 1 was a 4-year-old female with a 4 month history of intermittent forelimb lameness that had partially responded to oral anti-inflammatories. The horse was in full training and actively competing in cutting. Case 2 was a one-year-old filly bred for cutting that presented with a right forelimb lameness of 3 weeks’ duration, which was not responsive to oral anti-inflammatories. The horse was not in training.

Category: Bone - Case study - Equine - Tendon
Authors: J. McLellan and J.-M. Denoix
Journal: Equine Veterinary Education

Damage to the origin of the gastrocnemius and superficial digital flexor muscles has been previously reported as an acute injury in both foals and adult horses. This case report describes, for the first time, the clinical onset of caudal reciprocal apparatus failure in a 2-year-old Thoroughbred. These signs were due to injury of the gastrocnemius and superficial digital flexor muscle origins sustained prior to the onset of lameness. This condition should be considered in cases demonstrating similar clinical signs, even in the absence of known trauma or acute injury to the region.

Authors: Michelle E. Ellison, Sarah Duenwald-Kuehl, Lisa J. Forrest, Ray Vanderby , Sabrina H. Brounts
Journal: American Journal of Veterinary Research

Objective—To evaluate the feasibility and repeatability of in vivo measurement of stiffness gradients by means of acoustoelastography in the superficial digital flexor tendons (SDFTs) of clinically normal horses.

Animals—15 clinically normal horses.

Category: Equine - Imaging - Tendon - Ultrasound
Authors: Alaine J. Hu, Larry R. Bramlage
Journal: Journal of the American Veterinary Medical Association

Objective—To assess postoperative probability of racing, career longevity, and convalescent time in Thoroughbred racehorses with moderate to severe superficial digital flexor tendonitis (SDFT) in the forelimbs treated by desmotomy of the accessory ligament of the superficial digital flexor tendon (ie, superior check ligament desmotomy [SCLD]).

Design—Retrospective case series.

Animals—332 Thoroughbred racehorses with SDFT consecutively treated by means of SCLD.

Category: Equine - Tendon
Authors: T Takahashi, H Ohmura, K Mukai, A Matsui and H Aida
Journal: Equine Veterinary Journal


One of the causes of injury to the superficial digital flexor tendon (SDFT) is assumed to be repeated high intensity loading of the tendon. Earlier fatigue of the deep digital flexor muscle (DDFM) in comparison to the time of fatigue of the superficial digital flexor muscle (SDFM) is also assumed to increase load on the SDFT during long distance running. This study evaluated the fatigue of SDFM and DDFM with maximal exercise.

Category: Equine - Tendon
Authors: S. E. van Hamel, H. J. Bergman, S. M. Puchalski, M. W. de Groot and P. R. van Weeren
Journal: Equine Veterinary Journal

Reasons for performing the study

Distal deep digital flexor tendinopathy is an important cause of foot lameness in horses that is difficult to diagnose with radiography and ultrasonography. Magnetic resonance imaging is a well-accepted and validated technique for the identification of deep digital flexor tendon (DDFT) lesions, but has some practical and financial drawbacks. Contrast-enhanced computed tomography (CECT) has been proposed as a suitable alternative, but validation studies are currently lacking.

Authors: L. J. Tully, A. M. Murphy, R. K. W. Smith, S. L. Hulin-Curtis, K. L. P. Verheyen and J. S. Price
Journal: Equine Veterinary Journal

Reasons for performing the study

To explore whether genetic susceptibility is a potential risk factor for superficial digital flexor (SDF) tendinopathy in Thoroughbred (TB) racehorses.

To identify informative single nucleotide polymorphisms (SNPs) that capture genetic diversity across a range of candidate genes and to investigate, in a case–control study, their association with SDF tendinopathy in UK National Hunt TB racehorses in training.
Study design

Case–control candidate gene association study.

Category: Epidemiology - Equine - Tendon
Authors: Simone Westermann, Dr med vet; Viola Windsteig, BSc; Johannes P. Schramel, Dr med vet; Christian Peham, Prof Dr techn
Journal: American Journal of Veterinary Research

Objective—To determine the skin temperature of the metacarpus in horses associated with the use of bandages and tendon boots, compared with the bare limb, at rest and after 20 minutes of lunging.

Animals—10 adult horses.

Procedures—Skin temperature on the bare metacarpus of both forelimbs was measured at rest and after lunging. Subsequently, a bandage was applied to the left metacarpus and a tendon boot to the right metacarpus and skin temperature was measured at rest and after lunging. Skin temperature was measured with fixed sensors and thermographically.

Category: Equine - Tendon
Authors: Weston Davis, Christopher J Caniglia, Meghann Lustgarten, Travis Blackwelder, Ian Robertson and W Rich Redding
Journal: Veterinary Radiology and Ultrasound

Lateral digital flexor tendonitis is a rarely reported cause of hind limb lameness in performance horses. The purpose of this retrospective study was to describe clinical and diagnostic imaging findings for a group of horses with lateral digital flexor tendinitis within the tarsal sheath. Equine cases with a diagnosis of lateral digital flexor tendonitis and magnetic resonance imaging (MRI) studies of the affected region were retrieved from North Carolina University's medical record database.

Category: Equine - MRI - Tendon