Table 2.

Leg length difference

	Early follow-up	FU at skeletal maturity*	Change (95% CI)	p value
Total LLD	9.5 (7.6)	10.9 (9.4)	1.4 (− 1.5–4.4)	0.337
Femoral difference	8.1 (6.5)	9.8 (8.7)	1.7 (− 0.2–1.9)	0.074
Tibial difference	0.7 (2.8)	1.8 (3.9)	1.1 (− 0.6–1.4)	0.192
Total LLD stratified for treatment group
Closed reduction (n = 4)	7.5 (4.5)	7.8 (6.4)	0.3 (− 3.3–3.8)	0.836
Open reduction (n = 4)	9.5 (8.4)	9.5 (10.6)	0.0 (− 10.3–10.3)	0.999
OR and femoral osteotomy (n = 7)	10.3 (9.7)	12.6 (11.5)	2.3 (− 3.6–8.1)	0.375
OR and pelvic osteotomy (n = 3)	4.7 (4.2)	11.0 (8.9)	6.3 (− 13.0–25.6)	0.293
OR and femoral and pelvic osteotomy (n = 9)	11.4 (7.8)	11.7 (10.1)	0.2 (− 7.6–8.1)	0.950

Data presented as mean (standard deviation), comparison using paired samples t-test

CI confidence interval, LLD leg length difference, OR open reduction

*Measurement at skeletal maturity X-ray or at moment of epiphysiodesis for epiphysiodesis patients