Authors: Megan M. Lamb, Jennifer G. Barrett, Nathaniel A. White II and Stephen R. Werre
Journal: Veterinary Radiology and Ultrasound

Desmopathy of the distal interphalangeal joint collateral ligament is a common cause of lameness in the horse and carries a variable prognosis for soundness. Intralesional treatment has been proposed for improving outcome; however, limited reports describe methods for injecting this ligament. The purpose of this study was to compare accuracy of low-field magnetic resonance imaging (MRI) vs. radiography for injecting the collateral ligament of the distal interphalangeal joint.

Authors: N.M. Werpy, J.M. Denoix, C.W. McIlwraith and D.D. Frisbie
Journal: Veterinary Radiology & Ultrasound

Previous studies have proposed that standard ultrasonography may not adequately represent the pertinent anatomic characteristics of the equine proximal suspensory ligament. The purpose of the study was to compare the use of standard ultrasonography, angle contrast ultrasonography, MRI, and histology for identification of the anatomic characteristics of the normal equine suspensory ligament in the forelimb. Horses free from forelimb lameness with no palpable abnormalities in the region of the suspensory ligament were included in the study.

Authors: Katherine S. Garrett, Lawrence R. Bramlage, Deborah L. Spike-Pierce, Noah D. Cohen
Journal: Journal of the American Veterinary Medical Association

Objective—To determine the effects of treatment with platelet- and leukocyte-rich plasma (PRP) on future 2-, 3-, and 4-year-old racing performance of yearling Thoroughbreds with proximal sesamoid bone inflammation and associated suspensory ligament branch (SLB) desmitis.

Design—Randomized clinical trial.

Animals—39 yearling Thoroughbreds.

Authors: Sarah N. Gray, Sarah M. Puchalski and Larry D. Galuppo
Journal: Veterinary Radiology & Ultrasound

Injuries of the intercarpal ligaments are an important cause of lameness in performance horses. The purpose of this prospective cadaver study was to determine whether computed tomography (CT) arthrography would be a feasible method for visualizing and characterizing intercarpal ligaments in the horse. One cadaver limb from each of eight nonlame horses was collected immediately after euthanasia. For each limb, overlapping 2.0 mm CT images were acquired before and after injection of iodinated contrast medium into the antebrachiocarpal joint, middle carpal joint, and carpal sheath.

Category: Equine - Ligament - MRI
Authors: Robin M. Dabareiner, DVM, PhD, DACVS; M. Keith Chaffin, DVM, MS, DACVIM; Heather Quirham; G. Kent Carter, DVM, MS, DACVIM
Journal: Journal of the American Veterinary Medical Association

Case Description—4 horses with enthesopathy and desmitis of the medial collateral ligament of the cubital joint were examined. Clinical Findings—All 4 horses had a history of acute, severe, unilateral forelimb lameness and had signs of pain during manipulation of the affected upper forelimb; 2 also had swelling in the axillary region. There was no improvement in lameness after diagnostic local analgesia below the carpal region, and 1 of 4 horses had mild improvement after cubital joint analgesia.

Category: Equine - Ligament
Authors: Jan M. Kümmerle and Martin R. Kummer
Journal: Veterinary Surgery

Abstract Objective To describe the arthroscopically accessible anatomy of the tarsal collateral ligaments in the horse. Study Design Descriptive study. Animals Cadaveric equine hind limbs (n = 24) obtained from horses without tarsal disease. Methods Two pairs of tarsal joints were used to obtain silicone models of the tarsocrural joint and dissect the tarsal collateral ligaments (CLs). Ten pairs of tarsocrural joints had arthroscopic exploration and the accessible parts of the tarsal CLs were marked with an arthroscopic hook knife.

Authors: D. Carnicer, V. Coudry and J.-M. Denoix
Journal: Equine Veterinary Education

The suspensory apparatus is composed of the third interosseous muscle (TIOM) or suspensory ligament, the proximal sesamoid bones, palmar ligament and distal sesamoidean ligaments (DSL). Of these structures, the suspensory ligament is the most frequently implicated in conditions seen in race and sport horses; nevertheless, DSL lesions are not rare and often associated with other injuries that can modify patient prognosis and management. Ultrasonography has been shown to be valuable in the assessment of DSL desmitis.

Category: Equine - Ligament - Ultrasound
Authors: MS Hall, JR Vasey, JW Russell, T Russell
Journal: Australian Veterinary Journal

To evaluate the racing performance of horses that underwent ultrasound-guided intralesional injection of autologous bone marrow aspirate for treatment of selected forelimb suspensory ligament (body or branch) core lesions.
Retrospective cohort study of 13 Standardbred and 17 Thoroughbred race horses.
Autologous bone marrow aspirated from the sternebrae was injected, under ultrasound guidance, into suspensory ligament core lesions (body or branch). Racing records were reviewed for a comparison of performance before and after surgery.

Journal: Equine Veterinary Journal

Reasons for performing study: To evaluate intra- and interobserver variability in ultrasonographic measurements of the proximal aspect of the suspensory ligament (PSL) in the horse.

Hypothesis: A minimum difference of ≥20% is required to differentiate reliably between physiological and pathological alterations related to dimensions.

Category: Equine - Ligament - Ultrasound
Journal: Equine Veterinary Journal

Reasons for performing study: Ultrasonographic (US) abnormalities of the suspensory ligament branch (SLB) have been poorly investigated but can have considerable impact on market value and career path when encountered in athletic horses. There is a need for determination of the prevalence and relationship to clinical injury of these US abnormalities in the Thoroughbred (TB) racehorse.

Objectives: To establish the prevalence of, and the repeatability of an US grading system for, subclinical US abnormalities of the forelimb SLB in a population of UK TB flat racehorses.

Category: Equine - Ligament - Ultrasound