Table 3.

Change of radiographic parameters and affecting factors after tendo-Achilles lengthening in patients with cerebral palsy

	AP talo-1st metatarsal angle			AP talo-2nd metatarsal angle			Lateral talo-1st metatarsal angle			Calcaneal pitch angle
	Estimate	SE	p-value	Estimate	SE	p-value	Estimate	SE	p-value	Estimate	SE	p-value
Duration	− 5.0	4.1	0.236	− 6.5	5.1	0.212	− 13.0	2.1	< 0.001	4.5	0.9	< 0.001
Sex	− 1.4	3.3	0.378	− 0.7	4.1	0.868	0.2	1.7	0.899	1.3	0.7	0.067
GMFCS level (I)
II	0.1	3.4	0.971	1.0	4.3	0.816	1.1	1.8	0.533	− 1.1	0.8	0.173
III	− 6.6	4.8	0.174	− 7.0	5.9	0.241	− 2.6	2.3	0.253	1.3	1.0	0.180
Age	0.4	0.2	0.081	0.4	0.3	0.166	0.3	0.1	0.028	− 0.1	0.1	0.124

SE standard error