Inertial measurement units for the detection of the effects of simulated leg length inequalities

Siebers, Hannah Lena; Eschweiler, Jörg; Quack, Valentin M.; Tingart, Markus; Betsch, Marcel

doi:10.1186/s13018-021-02212-z

Journal of Orthopaedic Surgery and Research

Table 1 Statistical evaluation with RM ANOVA or Friedman-test of frontal plane parameter

From: Inertial measurement units for the detection of the effects of simulated leg length inequalities

Parameter	Phase	Leg	Side	P value	Effect size	LLI with a significant difference to the physiological case
Parameter	Phase	Leg	Side	P value	Effect size	LLI	P values
Max. cervical flexion	Stance	Long leg	Left	0.355	0.061
		Long leg	Right	0.532	0.044
		Short leg	Left	0.267	0.072
		Short leg	Right	0.666	0.034
	Swing	Long leg	Left	0.132	0.098
		Long leg	Right	0.554	0.042
		Short leg	Left	0.111	0.104
		Short leg	Right	0.751	0.027
Max. thoracal flexion	Stance	Long leg	Left	0.441	0.049
		Long leg	Right	0.197	0.079
		Short leg	Left	0.530	0.037
		Short leg	Right	0.629	0.031
	Swing	Long leg	Left	0.360	0.054
		Long leg	Right	0.245	0.072
		Short leg	Left	0.326	0.061
		Short leg	Right	0.646	0.034
Max. lumbar lateral flexion	Stance	Long leg	Left	0.008	0.202	1	0.045
		Long leg	Right	< 0.001	0.447	≥ 2	< 0.001-0.008
		Short leg	Left	< 0.001	0.230	4	0.020
		Short leg	Right	0.112	0.103	2	0.030
	Swing	Long leg	Left	< 0.001	0.449	All	< 0.001-0.003
		Long leg	Right	< 0.001	0.295	2, 4	0.001
		Short leg	Left	< 0.001	0.276	All	0.002-0.036
		Short leg	Right	0.001	0.297	2, 4	0.003
Max. pelvic obliquity	Stance	Long leg	Left	< 0.001	0.394	All	< 0.001-0.002
		Long leg	Right	< 0.001	0.399	All	< 0.001-0.025
		Short leg	Left	< 0.001	0.322	1, 3, 4	0.001-0.035
		Short leg	Right	< 0.001	0.671	All	< 0.001-0.006
	Swing	Long leg	Left	< 0.001	0.494	≥ 3	≤ 0.001
		Long leg	Right	< 0.001	0.645	All	< 0.001-0.030
		Short leg	Left	< 0.001	0.418	All	< 0.001-0.010
		Short leg	Right	< 0.001	0.561	All	≤ 0.001
Max. hip abduction	Stance	Long leg	Left	0.340	0.054
		Long leg	Right	0.019	0.147	No
		Short leg	Left	< 0.001	0.358	All	< 0.001-0.046
		Short leg	Right	< 0.001	0.288	≥ 3	0.006-0.010
	Swing	Long leg	Left	< 0.001	0.431	≥ 2	< 0.001-0.019
		Long leg	Right	0.005	0.236	≥ 3	0.010-0.024
		Short leg	Left	< 0.001	0.466	All	< 0.001-0.026
		Short leg	Right	< 0.001	0.521	≥ 3	< 0.001
Max. hip adduction	Stance	Long leg	Left	< 0.001	0.262	≥ 3	0.006-0.024
		Long leg	Right	< 0.001	0.283	≥ 3	≤ 0.001
		Short leg	Left	0.099	0.112	3	0.027
		Short leg	Right	0.006	0.169	No
	Swing	Long leg	Left	0.002	0.195	3	0.045
		Long leg	Right	0.001	0.226	≥ 3	0.001-0.007
		Short leg	Left	0.013	0.160	3	0.014
		Short leg	Right	0.031	0.149	No
Max. ankle abduction	Stance	Long leg	Left	< 0.001	0.256	3	0.008
		Long leg	Right	0.326	0.058
		Short leg	Left	0.670	0.030
		Short leg	Right	0.300	0.061
	Swing	Long leg	Left	0.005	0.186	≥ 3	0.005-0.037
		Long leg	Right	0.033	0.132	No
		Short leg	Left	0.518	0.041
		Short leg	Right	0.193	0.076
Max. ankle adduction	Stance	Long leg	Left	< 0.001	0.593	≥ 2	< 0.001
		Long leg	Right	< 0.001	0.406	≥ 2	0.002-0.044
		Short leg	Left	0.517	0.034
		Short leg	Right	0.016	0.197	No
	Swing	Long leg	Left	< 0.001	0.638	All	< 0.001-0.017
		Long leg	Right	< 0.001	0.465	≥ 2	< 0.001-0.003
		Short leg	Left	0.487	0.037
		Short leg	Right	0.018	0.197	No

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ISSN: 1749-799X

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