摘要:

In vivo strain measurements at 8 locations on the tibia of the goat were performed. Successive in vitro calibrations were used to determine the assumed linear relationship between the measured strain signals and the external loads (3 forces and 3 moments) at the tibia. For the reconstruction of the in vivo external loads from the strain data, a transformation matrix was created from the calibration experiments, using ‘singular-value decomposition’. The method is a reliable technique for measuring in vivo loads during functional gait and gives reproducible resu

ISSN:1422-6405    

DOI:10.1159/000147444

出版商:S. Karger AG    

年代:1993

数据来源: Karger

摘要:

Compressions in the forelimb of a horse trotting at 3.7 m/s were studied using high-speed cinematography. From a diagram of shortenings it has been concluded that successive loadings in the longitudinal direction from below signify longer impact time and smaller impact forces compared to a theoretically stiff limb. It is proposed that the limb takes up the impact force passively until the onset of loading at the elbow joint, i.e. 30 ms following first contact.

ISSN:1422-6405    

DOI:10.1159/000147445

出版商:S. Karger AG    

年代:1993

数据来源: Karger

摘要:

The three-dimensional optoelectronic locomotion analysis system SELSPOT II was used for kinematic studies of hind limb locomotion patterns. Two groups, 11 sound horses and 15 horses suffering from hind limb lameness, were examined at the trot. Both graphical and quantitative analyses were compared in sound and lame horses. The parameter hip acceleration quotient (HAQ), using the different peaks of vertical acceleration of one hip during one stride, proved to be a suitable value for quantitative analysis of hind limb lameness. In sound horses the HAQ ranged from 1.03 to 1.54, lame horses showed values between 1.32 and 2.96. Checking and documentation of diagnostic anesthesias or therapies are possible applications.

ISSN:1422-6405    

DOI:10.1159/000147446

出版商:S. Karger AG    

年代:1993

数据来源: Karger

摘要:

Three methods were used simultaneously to determine the relationships between the vertical forces exerted on the hooves and the positions of the limbs and hooves at the times of peak vertical forces from 2 horses galloping on a track straightaway. Vertical forces were recorded from an instrumented shoe, fetlock joint motion was measured with an electrogoniometer and the angles of the carpus, fetlock and hoof were determined from slow-motion films. At hoof contact, the mean angles of the carpus and fetlock were 181-182° and 199-206°, respectively. Peak vertical forces on the heel occurred at or near maximum extension of the carpal and fetlock joints. Peak forces on the toe occurred during flexion of the fetlock joint and at mean hoof angles of 28-31° from the horizontal. The mean angles of the hoof from the horizontal at the time of heel contact were 6-7°. Hoof lift occurred at mean carpal angles of 173-174° and mean fetlock angles of 199-

ISSN:1422-6405    

DOI:10.1159/000147447

出版商:S. Karger AG    

年代:1993

数据来源: Karger