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- Title
Agreement between two inertial sensor gait analysis systems for lameness examinations in horses.
- Authors
Pfau, T.; Boultbee, H.; Davis, H.; Walker, A.; Rhodin, M.
- Abstract
Gait analysis is gaining popularity for quantification of lameness and 2 commonly used inertial sensor systems assess trunk movement symmetry: can these be used interchangeably in multi-centre studies? We compared head and pelvic movement symmetry between 2 inertial sensor gait analysis systems in 13 horses equipped simultaneously with the 2 systems. The first system quantified dorsoventral movement in the local reference frame (System A) and the second system global vertical movement (System B). Widths of limits of agreement were calculated employing a well established regression method dealing with systematically changing differences over the range of measured values. Widths of limits of agreement between Systems A and B were narrower for pelvic movement than head movement. For head movement, they ranged from 6.4 to 6.9 mm for in-hand trot and from 7.3 to 9.7 mm on the lunge and for pelvic movement from 2.5 to 4.4 mm in-hand and from 3.6 to 5.3 mm on the lunge. Widths of limits of agreement between the 2 investigated inertial sensor gait analysis systems are of comparable magnitude (some equivalent, some marginally higher) to the currently proposed thresholds of 6 mm for head and 3 mm for pelvic movement used in lameness investigations. Differences in measurements with 2 different systems (A and B) obtained from the same horse falling within the reported values should not be seen as a sign of a change in lameness.
- Subjects
GAIT disorders; LAMENESS in horses; HORSE diseases; LUNGEING (Equestrianism); PELVIC bones
- Publication
Equine Veterinary Education, 2016, Vol 28, Issue 4, p203
- ISSN
0957-7734
- Publication type
Article
- DOI
10.1111/eve.12400