Table 5.

Comparison of techniques

Author	Year	Technique	Number of hips	Minimum followup (years)	Age at surgery (years)	% Severin’s I + II	Other factors reported
Gulman et al. [5]	1994	Salter	52	8 years (mean, 13; range, 8–25)	Majority 1.5 to 4 years	71
Karakas et al. [11]	1995	Salter	55	2 years (mean, 7.5; range, 2–16)	7.8 years	65.4	Shortening
Morin et al. [14]	1998	Salter	122	3 years (mean, 12; range, 3–27)	5.4 years	70	Shortening
Bohm and Brzuske [3]	2002	Salter	73	26.2 years (mean, 30.9; range, 26.2–35.4)	4.1 years	88
Szepesi et al. [27]	1996	Pemberton	80	1 year (mean, 5.3; range, 1–15)	4.4 years	79	Shortening
Wada et al. [31]	2003	Pemberton	17	5 years (mean, 9.4; range, 5–17.4)	9.3 years	76	Previously operated
Thielemann et al. [28]	2003	Pemberton	100	10.4 years (mean, 14.7; range, 10.4–19.5)	4.4 years	95.9
Perlik et al. [18]	1985	Combined Pelvic Osteotomy	50	2 years (mean, 6; range, 2–18.8)	7.3 years	66	Previously operated (in 62%)
Our series	2007	Pembersal	44	5 years (mean, 10.5; range, 5–17 years)	5.2 years	91	Shortening (in 70%)