Motion Analysis

Authors: Jose M. Vilar DVM, PhD, , F. Miró DVM, PhD, A. Santana DVM, PhD and G. Spinella DVM, PhD
Journal: Journal of Equine Veterinary Science

The aim of this study was to evaluate equine performance in competitive trotter horses under normal racing conditions. Data of stride length, stride frequency, and mean horse speed were obtained from 50 2-year-old Italian fillies that were winners during the racing and the sprint laps of competition. The enhancement of speed in the sprint lap was obtained by increasing both stride length and stride frequency.

Category: Equine - Motion Analysis
Authors: Hilary M. Clayton BVMS, PhD, MRCVS
Journal: Journal of Equine Veterinary Science

This article summarizes the kinematics of the distal interphalangeal (DIP) joint during locomotion at walk and trot. The patterns and ranges of motion in flexion and extension are very similar at walk (range of motion: 46±40) and trot (range of motion: 47±40). In both gaits there is a cucle of flexion that peaks in the first half of stance. The joint is extended through the remainder of stance in opposition to a palmar moment generated by the deep digital flexor tendon and its accessory ligament and the navicular ligaments.

Category: Equine - Motion Analysis
Authors: Jose M. Vilar, F. Miró, A. Santana, G. Spinella
Journal: Journal of Equine Veterinary Science

The aim of this study was to evaluate equine performance in competitive trotter horses under normal racing conditions. Data of stride length, stride frequency, and mean horse speed were obtained from 50 2-year-old Italian fillies that were winners during the racing and the sprint laps of competition. The enhancement of speed in the sprint lap was obtained by increasing both stride length and stride frequency.

Category: Equine - Motion Analysis
Authors: H. M. CLAYTON*, A. D. WHITE, L. J. KAISER, S. NAUWELAERTS, M. LAVAGNINO and N. C. STUBBS
Journal: Equine Veterinary Journal

Reasons for performing study: Lightweight tactile stimulators attached to the hind pasterns increase the height of the hind hoof flight arc but details of the induced changes in swing phase kinematics and kinetics have not been investigated.

Hypotheses: Stimulators on the hind pasterns are associated with increased hindlimb joint flexions and increased positive work performed by the hip and tarsal musculature.

Category: Equine - Motion Analysis
Authors: Jacob J. Setterbo, BS; Tanya C. Garcia, MS; Ian P. Campbell, DVM; Jennifer L. Reese, DVM; Jessica M. Morgan, BS; Sun Y. Kim, DVM; Mont Hubbard, PhD; Susan M. Stover, DVM, PhD
Journal: American Journal of Veterinary Research

Objective—To compare hoof acceleration and ground reaction force (GRF) data among dirt, synthetic, and turf surfaces in Thoroughbred racehorses. Animals—3 healthy Thoroughbred racehorses. Procedures—Forelimb hoof accelerations and GRFs were measured with an accelerometer and a dynamometric horseshoe during trot and canter on dirt, synthetic, and turf track surfaces at a racecourse. Maxima, minima, temporal components, and a measure of vibration were extracted from the data. Acceleration and GRF variables were compared statistically among surfaces.

Category: Equine - Motion Analysis
Authors: Gomez Alvarez, C.B.; Bobbert, M.F.; Lamers, L.; Johnston, C.; Back, W.; van Weeren, P.R.
Journal: Equine Veterinary Journal

Abstract:Reasons for performing study: There are no detailed studies describing a relationship between hindlimb lameness and altered motion of the back.  Objectives: To quantify the effect of induced subtle hindlimb lameness on thoracolumbar kinematics in the horse.  

Authors: Gomez Alvarez, C.B.; L'Ami, J.J.; Moffatt, D.; Back, W.; van Weeren, P.R.
Journal: Equine Veterinary Journal

Abstract:Reasons for performing study: Although there is anecdotal evidence of clinical effectiveness of chiropractic in treatment of equine back pain, little scientific work has been reported on the subject.  Objectives: To quantify the effect of chiropractic manipulations on back and limb kinematics in horse locomotion.  

Category: Equine - Motion Analysis