REASONS FOR PERFORMING STUDY: Ultrasound is widely used in horses with stifle lameness, yet limited information is available regarding the appearance of normal and injured lateral patellar ligaments (LPL).

OBJECTIVES: To map the normal ultrasonographic appearance of the LPL. To describe the clinical and ultrasonographic features of LPL injuries.

STUDY DESIGN: Descriptive study of healthy horses and retrospective case series.

Category: Equine - Imaging - Tendon - Ultrasound

OBJECTIVE: To compare intra and postoperative clinical features of desmotomy of the accessory ligament of the superficial digital flexor tendon (ALSDFT) using the Saber radiofrequency (SaberRF) electrosurgical probe versus sharp transection with a tenotomy knife.

STUDY DESIGN: Randomized, controlled, blocked (horse) design.

ANIMALS: Adult horses (n = 6).

Previous descriptions of the clinical features of navicular disease occurred before the widespread use of magnetic resonance imaging (MRI) allowed a more definitive diagnosis of foot pain. The objective of this study was to compare the clinical features of horses with lesions of the podotrochlear apparatus with those with other causes of foot pain. It was hypothesised that primary navicular bone disease would be associated with more advanced radiological findings than other diagnoses.

ReGeneraTing Agents (RGTA) are nanopolysaccharides engineered to mimic heparan sulfates and have been shown to stimulate tissue repair and healing (skin, cornea, gingival, and muscle) in several animal models of injury and in human medicine. A preliminary study, monocentric and uncontrolled, was conducted to evaluate the efficacy of a dedicated RGTA (named Equitend) in improving the healing quality of the injured tendon after a single and ultrasound-guided intralesional injection.

Category: Equine - Lameness - Tendon
Authors: Sue Dyson
Journal: Journal of Equine Veterinary Science

Twelve tarsi from six horses humanely destroyed for reasons unrelated to the study were dissected and measurements of the calcaneal insertions of the superficial digital flexor tendon (SDFT) were acquired. The medial calcaneal insertions of the SDFT ranged in length and thickness from 4.0 to 5.4 cm and 0.3 to 0.5 cm, respectively, and the lateral calcaneal insertions ranged in length and width from 4.0 to 6.3 cm and 0.3 to 0.5 cm, respectively.

Category: Equine - Tendon - Traumatology
Authors: Celine A. Bourzac, DVM, MS; Judith B. Koenig, DVM, DVSc; Kaitlyn A. Link; Stephanie G. Nykamp, DVM; Thomas G. Koch, DVM, PhD
Journal: American Journal of Veterinary Research

Objective—To evaluate the efficacy and effects of labeling equine umbilical cord blood (UCB)– and bone marrow (BM)–derived multipotent mesenchymal stromal cells (MSCs) with an ultrasmall superparamagnetic iron oxide (SPIO) contrast agent and the detection of labeled MSCs by use of MRI.

Sample—UCB MSCs from placental tissues of 5 foals and BM MSCs from 5 horses.

Category: Equine - MRI - Stem cells - Tendon
Authors: W. H. J. Barker, I. M. Wright
Journal: Veterinary and Comparative Orthopaedics and Traumatology (VCOT)

introduction: Accurate description of the calcaneal insertions of the superficial digital flexor tendon (SDFT) is lacking and inconsistent. The aim of this study was to undertake morphologic and morphometic evaluations of these structures to assist in elucidating their functional and pathogenic roles in displacement of the SDFT from the calcaneal tuber. Method: Dissections were performed on 10 normal cadaveric hindlimbs.

Authors: R. J. Estrada , P. R. van Weeren, C. H. A. van de Lest, J. Boere, M. Reyes, J. C. Ionita, M. Estrada, C. J. Lischer
Journal: Veterinary and Comparative Orthopaedics and Traumatology (VCOT)

Objective: Even though equine multi-limb tendinopathy models have been reported, it is unknown if fore- and hindlimb tendon healing behave similarly. The aim of this study was to compare the healing process of surgically induced superficial digital flexor tendon (SDFT) core lesions of fore- and hindlimbs in horses. Methods: Tendon core lesions were surgically induced in the SDFT of both fore- and hindlimbs in eight horses. One randomly assigned forelimb and one randomly assigned hindlimb were injected with saline one and two weeks post-surgery.

Category: Equine - Tendon
Authors: Elizabeth J. Barrett, Amelia S. Munsterman, R. Reid Hanson and Robert L. Jackson
Journal: Veterinary Surgery


To compare in vitro strength and failure characteristics of a tendon implant against a 3 loop pulley suture pattern for equine superficial digital flexor tendon (SDFT) laceration repair.
Study Design

Study Population

Cadaveric equine forelimb SDFT (n = 16).

Authors: A. M. Carvalho, A. L. M. Yamada, M. A. Golim, L. E. C. Álvarez, C. A. Hussni and A. L. G. Alves
Journal: Equine Veterinary Journal


Reasons for performing study

Mesenchymal stem cells (MSCs) have been used to treat equine tendonitis with promising results; however, little is known about the potential migration of these cells.


To assess the possible migration of MSCs from an implantation site in the superficial digital flexor tendon (SDFT) to a lesion in the SDFT of the contralateral limb.

Category: Equine - Stem cells - Tendon