Lower Limb Loading during Gait in Patients Long Period after Total Hip Arthroplasty Revision

Table 1

Comparison of measured values of the operated and nonoperated limb between groups.

Variable	Limb	One to 6 years			Six to 11 years			Over 11 years			Significance ()
		Mean	Mdn	SD	Mean	Mdn	SD	Mean	Mdn	SD	One to 6 yrs versus 6 to 11 yrs	One to 6 yrs versus over 11 yrs	Six to 11 yrs versus over 11 yrs
Breaking peak [%]	O	−12.2	−12.6	1.9	−11.3	−10.0	2.9	−12.4	−11.5	2.3	0.351	1.000	0.383
	N	−11.9	−12.4	2.3	−12.6	−12.3	2.0	−13.0	−13.1	1.8	0.758	0.351	0.535
Propulsion peak [%]	O	13.8	13.1	2.6	13.6	14.3	2.8	16.4	17.0	1.8	1.000	0.055^+
	N	13.3	14.9	5.0	15.5	16.0	2.3	16.9	17.5	2.1	0.536	0.210^+	0.318
First vertical peak [%]	O	92.2	91.5	7.1	97.3	94.0	8.0	95.7	95.6	3.1	0.299	0.299	1.000
	N	101.3	98.5	7.0	98.7	98.2	5.9	97.7	100.5	4.9	0.606	0.606	0.902
Second vertical peak [%]	O	100.1	99.5	11.6	104.1	103.9	5.2	101.7	98.7	8.7	0.470	0.758	0.318
	N	108.4	109.4	10.2	103.7	101.8	8.4	104.8	106.0	4.0	0.351	0.681	0.710
Minimal vertical force [%]	O	83.9	85.6	7.2	82.8	83.4	4.4	81.0	79.4	4.5	0.536	0.252	0.383
	N	85.0	84.9	3.8	80.4	80.5	2.3	81.1	81.6	3.9		0.055^+	1.000
Time of breaking peak [%]	O	57.1	57.0	3.9	57.0	55.3	5.8	56.3	57.5	3.7	0.758	0.837	1.000
	N	58.4	54.7	9.3	54.8	54.8	2.9	56.2	56.2	3.0	0.837	0.758	0.456
Time of propulsion peak [%]	O	42.9	43.0	3.9	43.0	44.7	5.8	43.7	42.5	3.7	0.758	0.837	1.000
	N	41.6	45.3	9.3	45.2	45.2	2.9	43.8	43.8	3.0	0.837	0.758	0.456
Time of first vertical peak [%]	O	27.0	26.8	2.2	26.2	26.6	2.5	26.7	27.8	2.0	0.606	0.837	0.710
	N	23.4	25.1	3.5	23.2	23.2	4.2	27.3	26.1	3.8	0.606	0.114^+	0.165^+
Time of second vertical peak [%]	O	75.1	74.4	2.9	73.3	72.8	3.2	75.8	74.6	2.7	0.351	0.536	0.209^+
	N	76.1	75.6	1.6	76.4	76.1	1.8	76.6	75.5	2.8	0.758	0.918	0.620
Time of minimal vertical force [%]	O	47.2	49.3	4.8	45.9	47.4	6.9	49.9	51.2	8.0	0.918	0.210^+	0.259^+
	N	45.1	46.0	4.7	47.7	48.5	4.3	50.6	51.0	2.8	0.299		0.318
Stance phase duration [s]	O	0.763	0.730	0.088	0.653	0.646	0.052	0.725	0.679	0.094		0.174^+	0.097^+
	N	0.769	0.730	0.096	0.683	0.693	0.087	0.715	0.687	0.067	0.091^+	0.174^+	0.805

SD: standard deviation, Mdn: median, O: operated limb, N: nonoperated limb, + = 0.3 0.5 – medium effect, and = 0.5 – large effect.