Outcomes of total hip arthroplasty with a standard prosthesis for the affected hip in patients with poliomyelitis sequelae: a mid-term retrospective follow-up study

Table 2 Clinical outcomes

Indicator	Mean and Standard Deviation				P value
Indicator	Preoperative	1 year postoperative	3 years postoperative	final follow-up	I	II	III	IV	V	V	V
Harris Hip Score(point) ^a	56.66 ± 8.70	75.59 ± 5.11	79.25 ± 5.07	83.53 ± 4.36	< 0.01	< 0.01	< 0.01	< 0.01	< 0.010.095	< 0.01	< 0.01
UCLA activity-level rating(point) ^a	3.69 ± 0.97	5.56 ± 0.56	5.88 ± 0.66	6.22 ± 0.66	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01
SF-12^a
PCS (point)	30.47 ± 6.33	47.56 ± 4.51	51.47 ± 4.13	54.38 ± 3.99	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01
MCS (point)	45.66 ± 5.10	52.94 ± 3.47	55.00 ± 3.36	56.13 ± 3.28	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01
Visual Analogue Score(point) ^a	6.19 ± 0.90	1.81 ± 0.47	0.31 ± 0.64	0.22 ± 0.42	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01	< 0.01	0.499
Hip flexion(°) ^a	64.84 ± 9.80	88.75 ± 6.96	91.56 ± 6.15	93.13 ± 6.19	< 0.01	< 0.01	< 0.01	< 0.01	0.017	< 0.01	0.095
Hip abduction(°) ^a	22.81 ± 5.23	30.47 ± 3.45	31.72 ± 3.73	32.97 ± 4.19	< 0.01	< 0.01	< 0.01	< 0.01	0.11	0.008	0.181
Limb length discrepancy(cm) ^b	3.11 ± 0.74	–	–	1.10 ± 0.42	< 0.01

I, Preoperative versus 1 year postoperative versus 3 years postoperative vs final follow-up; II, Preoperative versus 1 year postoperative; III, Preoperative versus 3 years postoperative; IV, Preoperative versus final follow-up; V, 1 year postoperative versus 3 years postoperative; VI, 1 year postoperative versus final follow-up; VII, 3 years postoperative vs final follow-up,
^aP values were calculated by repeated ANOVA
^bP values were calculated by paired aample T test

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