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Estimation of vertical tuber coxae movement in the horse from a single inertial measurement unit

Pfau, Thilo; Starke, Sandra D.; Tröster, Susanne; Roepstorff, Lars


Mean differences between measured and estimated MS values were variable between horses and ranged from 5 to 30 mm, SD of differences ranged from 7 to 14 mm. However, the difference between measured and estimated change in MS induced by lungeing or flexion test, was lower, with a value <1 mm for one MS measure, which assesses differences between left and right TC movement. Estimating TC movement from sacral movement does not accurately quantify the true state of TC MS since limits of agreement (LoA) overlap the decision boundaries for detecting mild lameness. The LoA of changes in vertical TC movement between exercises compared favourably with the average changes between exercise conditions. While in moderate to severe cases, changes in TC movement may be estimated from a single sensor over the sacrum, in mildly lame horses it should be measured with additional sensors. (C) 2013 Elsevier Ltd. All rights reserved.


Horse; Lameness; Inertial measurement unit; Hip hike; Limits of agreement

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Veterinary Journal
2013, Volym: 198, nummer: 2, sidor: 498-503

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