Gait analysis

Authors: Church, E.E.; Walker, A.M.; Wilson, A.M.; Pfau, T.
Journal: Equine Veterinary Journal

Reasons for performing study: Advances in gait analysis techniques have led to assessment tools that can aid in detecting and quantifying lameness; here, bilateral tubera coxae and pelvic movement during over ground locomotion are compared in order to investigate a practical method to assess hindlimb lameness in the horse.

Objectives: To evaluate which parameters from anatomical landmarks on trunk and proximal hindlimbs are the best indicators of degree and side of hindlimb lameness.

Category: Equine - Gait analysis
Authors: Johnson, J.L.; Moore-Colyer, M.
Journal: Equine Veterinary Journal

Reasons for performing study: Research into kinematics of the healthy equine back, has been performed in the walk and trot. This study focuses on back kinematics during canter, over a range of velocities. Flexion extension (FE) movements in canter are greatest in the lumbosacral (LS) region. Previous research has focused on canter velocity of 7 m/s; therefore quantification of LS kinematics at varying velocities is required to understand LS functions in equine locomotion.

Hypothesis: Range of flexion-extension movement through the lumbosacral joint increases with increasing velocity.

Category: Equine - Gait analysis
Authors: Álvarez, Gómez C.B.; Rhodin, M.; Byström, A.; Back, W.; van Weeren, P. R.
Journal: Equine Veterinary Journal

Reasons for performing study: Treadmill locomotion is frequently used for training of sport horses, for diagnostic purposes and for research. Identification of the possible biomechanical differences and similarities between the back movement during treadmill (T) and over ground (O) locomotion is essential for the correct interpretation of research results.

Objectives: To compare the kinematics of the thoracolumbar vertebral column in treadmill and over ground locomotion in healthy horses.

Category: Equine - Gait analysis
Authors: Roepstorff, L.; Egenvall, A.; Rhodin, M.; Byström, A.; Johnston, C.; van Weeren, P. R.; Weishaupt, M.
Journal: Equine Veterinary Journal

Reasons for performing study: At rising trot the rider sits alternately down on one diagonal pair of limbs and rises up on the other. The possible effects on asymmetry of locomotion induced by rising trot have rarely been studied.

Objectives: To demonstrate whether, and if so to what extent, rising trot causes asymmetrical loading in the vertical ground reaction force (VGRF) and/or asymmetrical effects on the locomotion pattern, comparing left and right side.

Category: Equine - Gait analysis
Authors: von Peinen, K.; Wiestner, T.; Bogisch, S.; Roepstorff, L.; van Weeren, P. R.; Weishaupt, M.A.
Journal: Equine Veterinary Journal

Reasons for performing study: The exact relationship between the saddle pressure pattern during one stride cycle and the movements of horse and rider at the walk are poorly understood and have never been investigated in detail.

Hypothesis: The movements of rider and horse account for the force distribution pattern under the saddle.

Category: Equine - Gait analysis
Authors: Byström, A.; Rhodin, M.; von Peinen, K.; Weishaupt, M.A.; Roepstorff, L.
Journal: Equine Veterinary Journal

Reasons for performing study: A comprehensive kinematic description of rider and saddle movements is not yet present in the scientific literature.

Objective: To describe saddle and rider movements in a group of high-level dressage horses and riders.

Category: Equine - Gait analysis
Authors: Rhodin, M.; Álvarez, Gómez C.B.; Byström, A.; Johnston, C.; van Weeren, P. R.; Roepstorff, L.; Weishaupt, M.A.
Journal: Equine Veterinary Journal

Reasons for performing study: Dressage involves training of the horse with the head and neck placed in a position defined by the rider. The best position for dressage training is currently under debate among riders and trainers, but there are few scientific data available to confirm or disprove the different views.

Objective: To evaluate the kinematic effects of different head and neck positions (HNPs) in elite dressage horses ridden at trot.

Category: Equine - Gait analysis
Authors: Waldern, N.M.; Wiestner, T.; Von Peinen, K.; Álvarez, Gómez C.G.; Roepstorff, L.; Johnston, C.; Meyer, H.; Weishaupt, M.A.
Journal: Equine Veterinary Journal

Reasons for performing study: It is believed that the head-neck position (HNP) has specific effects on the loading pattern of the equine locomotor system, but very few quantitative data are available.

Objective: To quantify the effects of 6 different HNPs on forelimb-hindlimb loading and underlying temporal changes.

Category: Equine - Gait analysis
Authors: Weishaupt, M.A.; Byström, A.; von Peinen, K.; Wiestner, T.; Meyer, H.; Waldern, N.; Johnston, C.; van Weeren, R.; Roepstorff, L.
Journal: Equine Veterinary Journal

Reasons for performing study: The load acting on the limbs and the load distribution between fore- and hindlimbs while performing specific dressage exercises lack objective assessment.

Hypothesis: The greater a horse's level of collection, the more load is shifted to the rear and that during the passage the vertical load on the limbs increases in relation to the accentuated vertical movement of the centre of mass.

Category: Equine - Gait analysis
Authors: Crevier-Denoix, N.; Pourcelot, P.; Ravary, B.; Robin, D.; Falala, S.; Uzel, S.; Grison, A.-C.; Valette, J.-P.; Denoix, J.-M.; Chateau, H.
Journal: Equine Veterinary Journal

Reasons for performing study: Although track surfaces are a risk factor of tendon injuries, their effects on tendon loading at high speed are unknown. Using a noninvasive ultrasonic technique, it is now possible to evaluate the forces in the superficial digital flexor tendon (SDFT) in exercise conditions.

Objectives: To compare the effects of an all-weather waxed track (W) vs. a crushed sand track (S), on the SDFT loading in the trotter horse at high speed.

Category: Equine - Gait analysis