Table 1.

Patient characteristics

Pt.	Sex	GMFCS	Triradiate	Age at	Percutaneous pelvic	VDRSO	Soft tissue release	Post-operative
			cartilage	surgery (yr)	osteotomy (Side)			immobilization (Spica cast)
1	M	IV	Open	8	Right	Unilateral (Right)
2	M	IV	Closed	15	Left	Bilateral
3	M	V	Open	12	Right	Unilateral (Right)
4	M	V	Open	6	Left	Bilateral	No
5	F	IV	Open	10	Left	Bilateral		Yes
6	F	V	Open	8	Right	Unilateral (Right)
7	M	IV	Open	11	Left	Bilateral
8	M	IV	Open	7	Left	Bilateral
9	M	IV	Open	15	Right	Bilateral
10	M	IV	Closed	15	Bilateral	Bilateral		Yes
11	F	IV	Open	8	Left	Bilateral
12	F	IV	Open	4	Left	Bilateral		Yes
13	M	IV	Open	15	Left	Bilateral	No
14	M	IV	Open	6	Left	Bilateral	No	Yes
15	F	IV	Closed	12	Left	Bilateral
161	F	V	Closed	14	Left	Bilateral
17	M	IV	Closed	14	Left	Bilateral
18	F	IV	Closed	12	Right	Bilateral		Yes
19	F	IV	Open	10	Right	Bilateral	No	Yes
20	M	IV	Open	5	Right	Bilateral		Yes
21	M	IV	Open	8	Right	Bilateral	No	Yes

All patients were available for follow-up. The mean age at surgery is 10.3 years (range 4 to 15) and the mean follow-up period is 16 mo (range 9-28).

¹One patient died approximately 3 mo post-surgery following a severe respiratory tract infection (pneumonia ab ingestis). GMFCS: Gross Motor Function Classification System; VDRSO: Varus, derotational, shortening femoral osteotomy; M: Male; F: Female.