Table 2.

Comparison of the outcome of the radiographic parameters and functional status pre-operation, post-operative 12-months and at last follow-up between unilateral and bilateral hip reconstruction.

	Unilateral hip reconstruction n = 18 patients		Bilateral hip reconstruction n = 42 patients		αp value (unilateral:bilateral group)
Mean Migration Percentage (%)	Ipsilateral hip	Contralateral hip	Ipsilateral hip	Contralateral hip	Ipsilateral hip	Contralateral hip
Pre-operative	76.7	23.8	61.7	30.5	0.007	0.031
Post-operative 12 months	30.0	27.9	8.4	8.6	0.004	<0.005
Last follow-up	33.4	30.8	11.0	12.2	0.004	0.002
£p-value	<0.005	*0.104	<0.005	<0.005
Mean Pelvic Obliquity Angle (degrees)
Pre-operative	6.5		4.1		*0.21
Post-operative 12 months	4.4		1.9		0.004
Last follow-up	5.6		2.1		0.001
£p-value	*0.423		0.007
Mean Migration Percentage Difference (%)
Pre-operative	52.9		31.2		<0.005
Post-operative 12 months	24.9		5.1		<0.005
Last follow-up	29.2		7.6		<0.005
£p-value	<0.005		<0.005
Functional status at last follow-up
Improvement in sitting	5		21		NA
Improvement in standing	2		23		NA
Improvement in walking	1		6		NA
Overall functional improvement	6 (33.3%)		31 (73.8%)		0.031
No changes	12 (66.7%)		11 (26.2%)		NA

^αp-value between unilateral and bilateral hip reconstruction group.

£p-value within ipsilateral and contralateral hip pre-operation and last follow-up.

*p-value>0.05 not statistically significant.