Lameness

Authors: J. L. KAMM, L. R. BRAMLAGE, L. V. SCHNABEL, A. J. RUGGLES, R. M. EMBERTSON, S. A. HOPPER
Journal: Equine Veterinary Journal

Reason for performing study: Analysis was performed to examine a method for refining the preoperative prognosis for horses that had surgery to remove apical fractures of the proximal sesamoid bones (PSBs).

Objectives: To determine if: 1) there was a difference in size or configuration of apical fractures between the different anatomical locations of the PSBs, which have been shown to affect the prognosis; and 2) the size or configuration could predict the prognosis for racehorses with these fractures.

Authors: Christopher E. Kawcak DVM, PhD, Dipl ACVS and C. Wayne McIlwraith BVSc, PhD, DSc, FRCVS, Dipl ACVS
Journal: Journal of Equine Veterinary Science

Synovial fluid white blood cell (WBC) count and total protein (TP) concentration were evaluated in the midcarpal joints of horses to not only determine the effects of needle aspiration, infusion with saline, and infusion with a combination of N-acetyl-d-glucosamine, hyaluronan, and sodium chondroitin sulfate (GHCS) at two different doses to evaluate the latter for safety, but to also provide information on saline injection as a control in joints. The midcarpal joints from 24 horses were used for this study.

Category: Equine - Lameness - Treatment
Authors: Ashlee E. Watts, DVM, DACVS; Alan J. Nixon, BVSc, MS, DACVS; Heidi L. Reesink, VMD; Jonathan Cheetham, VetMB, PhD, DACVS; Susan L. Fubini, DVM, DACVS; Andrea L. Looney, DVM, DACVA
Journal: Journal of the American Veterinary Medical Association

Objective—To investigate the efficacy and safety of a low-volume, single-catheter, continuous peripheral neural blockade (CPNB) technique to locally deliver bupivacaine to alleviate signs of severe forelimb pain resulting from experimentally induced tendonitis in horses. Design—Randomized controlled experimental trial. Sample—14 horses and 5 forelimbs from equine cadavers. Procedures—Horses underwent collagenase-induced superficial digital flexor tendonitis in the midmetacarpal region of 1 forelimb.

Category: Anaesthesia - Equine - Lameness
Authors: M. BIGGI, S. DYSON
Journal: Equine Veterinary Journal

Reasons for performing study: Distal border fragments of the navicular bone can be seen in lame and nonlame horses and their clinical significance remains open to debate.

Objectives: To describe the magnetic resonance imaging (MRI) appearance of distal border fragments and the adjacent navicular bone. To investigate the relationship between fragments and other abnormalities of the navicular bone and the distal sesamoidean impar ligament (DSIL).

Category: Equine - Imaging - Lameness - MRI
Authors: S. J. DYSON, C. A. TRANQUILLE, S. N. COLLINS, T. D. H. PARKIN, R. C. MURRAY
Journal: Equine Veterinary Journal

Reasons for performing study: There is little scientific evidence to support the premise that poor foot conformation predisposes to foot pain and lameness.

Objectives: To determine relationships between external characteristics of the hoof capsule and angles of the distal phalanx; to determine variability in shape of the distal phalanx; and to investigate association between distal phalanx angles and the injury causing lameness.

Category: Equine - Lameness - Podiatry
Authors: C. Sherlock, T. Mair
Journal: Equine Veterinary Education

In the horse, the phalanges are the second most common location for the occurrence of osseous cyst-like lesions (OCLLs) after the medial femoral condyle of the stifle. Phalangeal OCLLs occur in a variety of locations, most of which are adjacent to, if not communicating with, a joint. The aetiology of these lesions is considered to be multifactorial by most authors. Horses with OCLLs demonstrate lameness of varying severity. Diagnostic analgesia should be used to localise the lameness. After localisation of the lameness, standard radiographic views of the isolated area should be performed.

Category: Bone - Equine - Lameness
Authors: Federica ter Woort DMV, Virginie De Busscher DMV, DipECVDI, MRCVS and Christopher B. Riley BVSc, PhD, Dipl. ACVS, PCIM
Journal: Journal of Equine Veterinary Science

A 4-year-old Quarter Horse gelding with a history of acute trauma was presented to our faculty. This report describes the inciting injury, documented in a video, and the ultrasonographic diagnosis of a traumatic extrusion of the right lateral meniscus with an accompanying extra-articular hematoma and distal collateral ligament lesion in a competing Quarter Horse. The ultrasonographic diagnosis of a lateral meniscal injury directly correlated with postmortem findings and this type of lateral meniscal injury has not been previously described in detail.

Authors: SILVIA RABBA, GÉRALDINE BOLEN, DENIS VERWILGHEN, ALEXANDRA SALCICCIA, VALERIA BUSONI
Journal: Veterinary Radiology & Ultrasound

Foot pain is an important cause of lameness in horses. When horses with foot pain have no detectable radiographic abnormalities, soft-tissue assessment remains a diagnostic challenge without magnetic resonance (MR) imaging. Ultrasonography can provide an alternative to MR imaging when that modality is not available but the extent of changes that might be seen has not been characterized. We reviewed the ultrasonographic findings in 39 horses with lameness responding positively to anesthesia of the palmar digital nerves and without radiographically detectable osseous abnormalities.

Category: Equine - Lameness - Ultrasound
Authors: Andrew Crawford BVetMed Cert ES (Orth), Matthew O'Donnell BVSc, Oliver Crowe BVetMed Cert ES (Orth), Ehud Eliashar DVM, Diplomate ECVS, Roger K. Smith MA, Vet MB, PhD, DEO, Diplomate ECVS
Journal: Veterinary Surgery

Objectives: To report the clinical features of horses with fluid-filled masses associated with the digital flexor tendon sheath (DFTS) and outcome after surgery.

Study Design: Case series.

Animals: Horses (n=10)

Methods: Medical records of horses with fluid-filled masses associated with the DFTS were reviewed and the clinical features, diagnostic methods, treatment, histopathology, and outcome reported.

Category: Equine - Lameness
Authors: S. Dyson, R. Murray, M. Schramme, T. Blunden
Journal: Equine Veterinary Education

Navicular disease is unlikely to be a single disease. The close anatomical and functional relationships between the navicular bone, collateral sesamoidean ligament, distal sesamoidean impar ligament, deep digital flexor tendon, navicular bursa and distal interphalangeal joint result in the frequent occurrence of combinations of injuries. There are a number of different pathological processes that affect the navicular bone, which probably have different aetiopathogeneses.

Category: Equine - Lameness