Journal: Equine Veterinary Journal

Reasons for performing study: Arthrosis of the articular process joints (APJs) in the caudal thoracolumbar region of horses may cause back pain and subsequent reduced performance or lameness. Ultrasound-guided injections of the APJs of the equine back have been described only briefly in the literature.

Objectives: To evaluate factors affecting the accuracy of intra-articular injections of the APJs in the caudal thoracolumbar region.

Category: Equine - Spine - Ultrasound
Journal: Veterinary Radiology & Ultrasound

Sonography is commonly used for diagnosis of desmopathy of the proximal part of the suspensory ligament in horses. However, magnetic resonance (MR) imaging has been stated to be superior for detecting disease and localizing lesions. In this retrospective study of 39 horses or 46 hind limbs with lameness due to proximal plantar metatarsal pain, the clinical and diagnostic findings are discussed and sonography and MR imaging compared for examination of the proximal part of the suspensory ligament.

Authors: Juan J. Tabar-Rodriguez, DVM, MS; Antonio M. Cruz, DVM, MVM, MS, DrMedVet; Gabrielle Monteith, BS; Karen Gordon, PhD; Mark B. Hurtig, DVM, MVSc
Journal: American Journal of Veterinary Research

Objective—To use quantitative ultrasonography to evaluate the association between the speed of sound (SOS) at 9 sites in the third metacarpal bone (MCIII) of racing Thoroughbreds with workload accumulation and the effect that MCIII failure has on this association.

Animals—Sixty-two 2- and 3-year-old Thoroughbreds in racing condition.

Category: Bone - Equine - Ultrasound
Authors: Bourzac, C.; Alexander, K.; Rossier, Y.; Laverty, S.
Journal: Equine Veterinary Journal

Reasons for performing study: Osteochondritis dissecans (OCD) lesions of the femoropatellar (FP) joint are diagnosed routinely by radiography, but lesions located in the trochlear groove or without accompanying subchondral bone changes can be difficult to visualise. Ultrasonography allows evaluation of articular cartilage and subchondral bone in the FP joint.

Objectives: To document the radiographic and ultrasonographic appearance of OCD lesions in the equine FP joint, grade ultrasonographic lesions and compare their accuracy in the diagnosis of these lesions.

Journal: Veterinary Radiology and Ultrasound

The clinical and ultrasonographic features of seven horses with coxofemoral subluxation are presented. Affected horses included five adult geldings (11–20 years), one large pony (6 years) and a 3-month-old filly. All were lame at the walk except for the pony with grade 3/5 lameness. Lameness was acute in all horses, but three horses progressed after initial improvement. Crepitus, muscle atrophy, and pelvic asymmetry were inconsistent findings.

Authors: Katrien Vanderperren, DVM, PhD; Ann M. Martens, DVM, PhD; Jeroen Declercq, DVM; Luc Duchateau, PhD; Jimmy H. Saunders, DVM, PhD
Journal: Journal of the American Veterinary Medical Association

Objective—To compare clinical usefulness of ultrasonography versus radiography for detection of fragmentation of the dorsal aspect of the metacarpophalangeal (MCP) and metatarsophalangeal (MTP) joints in horses.

Design—Cross-sectional study.

Animals—36 horses with fragmentation of the MCP (n = 19) and MTP (29) joints.

Authors: Avella, C.S.; Ely, E.R.; Verheyen, K.L.P.; Price, J.S.; Wood, J.L.N.; Smith, R.K.W.
Journal: Equine Veterinary Journal

Reasons for performing study: It is important to ascertain the prevalence of superficial digital flexor tendon (SDFT) injuries and to improve methods of predicting injury in National Hunt (NH) racehorses.

Objectives: To establish: 1) the prevalence of SDFT tendinopathy in NH horses; 2) whether routine ultrasonography can be used to predict SDFT injuries; 3) whether previous tendinopathy predisposes to reinjury; 4) a normal range for the SDFT cross-sectional area (CSA); and 5) the effects of gender, age, background (ex-flat or exstore), limb, training and rest periods on SDFT CSA.

Category: Equine - Tendon - Ultrasound
Authors: FLORIAN GEBUREK, DrMedVet, ANNA K. RÖTTING, DrMedVet, PhD, Diplomate ACVS & ECVS , and PETER M. STADLER, Prof DrMedVet
Journal: Veterinary Surgery

Objective—To assess agreement between ultrasonography (transcutaneous and transrectal) and standing radiography in horses with fractures in the pelvic region and disorders of the coxofemoral joint.

Study Design—Case series.

Animals—Warmblood horses (n=23) and 2 ponies.

Methods—Medical records (1999–2008) of equids with pelvic or coxofemoral disorders that had pelvic radiography and ultrasonography were retrieved and results of both techniques compared.

Authors: Mary Beth Whitcomb,
Journal: Journal of Equine Veterinary Science

Despite the increasing use of magnetic resonance imaging
(MRI), ultrasound remains a valuable tool to diagnose
injuries that cause distal extremity lameness in
the horse. The key to a successful examination is a strong
knowledge of anatomy in combination with proper ultrasonographic
technique and the patience and dedication
to learn these skills. Similar to all imaging
modalities, it is equally important to recognize and consider
the limitations of ultrasound in this region so that
findings can be interpreted appropriately. Ultrasound

Category: Equine - Imaging - Ultrasound
Authors: Relave, F.; Meulyzer, M.; Alexander, K.; Beauchamp, G.; Marcoux, M.
Journal: Equine Veterinary Journal

Reasons for performing study: Lesions located on the medial malleolus of the tarsocrural joint can be difficult to image radiographically. Ultrasonography allows evaluation of articular cartilage and subchondral bone.

Objectives: To compare dorso30° lateral-plantaromedial-oblique (DL-PlMO) and dorso45° views to detect lesions on the medial malleolus, to validate the use of ultrasonography to show lesions in the tarsocrural joint and to compare its sensitivity to radiography.