Table 5 Over view of relevant literature in the treatment of Crowe IV dysplasia combined with subtrochanteric femoral shortening osteotomy

Ozden et al. [4]

35 patients

45 hips

Crowe IV

Step-cut

10 (range, 7–14)

33 ± 25 (range, 0–75)

10 ± 6 (range, 0–25)

37 ± 14 (range, 21–47)

1

3.8 ± 0.7 (range 3–6)

3

4 stem

1 acetabular component

2 closed reduction

2 performed surgery

5

Kiliçoğlu et al. [5]

16 patients

20 hips

Crowe IV

Modified oblique femoral shortening

6.8 (range, 3.7–10.3)

45 ± 10 (range, 30–65)

10 (range, 0–30)

35 ± 17 (range, 0–58)

0

4 (range, 3–6)

1

1 stem

1 acetabular component

2 closed reduction

1 performed surgery

3

Li et al. [6]

18patients

22 hips

Crowe IV

Double chevron

6.5 (range, 5–10)

45 (range, 30–62

15 (range, 0–24)

38 (range, 25–60)

0

3 to 6 months

0

0

0

0

Zhu et al. [7]

20 patients

21 hips

Crowe IV

Transverse

3.3 (range, 2–5)

47 ± 11(range, 20 -70)

12 ± 4 (range, 0–20)

38 ± 9 (range, 30–55)

2

5 (range, 3–9)

1

1 stem

1 closed reduction

0

Charity et al. [8]

15 patients

18 hips

Crowe IV

Shortening derotational

9.5 (range, 4.3–14)

No details

No details

30 (range, 10–40)

1

No details

1

3 acetabular component

0

0

Yalcin et al. [21]

31 patients

44 hips

Crowe IV

Transverse

5.3 (range, 2–8

34 (range, 20–60)

22 (range, 10–32)

> 20, 6 patients

< 20, 25 patients

27 (range, 19–45)0

4 (range, 2.5–14)

5

1 acetabular component

2 closed reduction

0

Wang et al. [24]

49 patients 56 hips

Crowe Type-III or IV

Transverse

10 (range, 4.8–14.3)

42 (range, 21–65)

11 (range, 6–14)

27 (range, 19–45)

3

6 (range, 4–9)

1

1 acetabular component

2 closed reduction

1 performed surgery

4

Rollo et al. [26]

15 patients

17 hips

Crowe IV

Transversal and Z-shaped

7.3 (range, 5.3–11.1)

45 (range, 38–90)

12 (range, 9–16)

39 (range, 30–50)

2

2.9 (range, 2.3–3.5)

0

0

0

1

Ollivier et al. [27]

24 patients

28 hips

Crowe IV

Transverse and step-cut

10 (range, 0.8–14.5)

43 (range, 26–60

6 (range, 0–20)

40 (range, 20–80)

0

10 (range, 2–28)

0

3 stem

1 acetabular component

2 closed reduction

1 performed surgery

5

Yasgur et al. [28]

8 patients

9 hips

Crowe IV

Transverse

3.6 (range, 2–7)

50 (range, 30–70

15 (range, 5–30)

35 (range, 30–55)

0

5 (range, 3–9)

1

1 stem

1 closed reduction

0

Wang et al. [29]

62 patients

76 hips

Crowe IV

Transverse

10 (range, 6.6–13.2)

43 (range, 21–65)

10 (range, 6–17)

22 (range, 12–38)

2

6 (range, 4–8)

1

1 stem

1 acetabular component

3 closed reduction

4

Baz et al. [32]

15 patients

21 hips

Crowe IV

Transverse

4.9 (range, 3–8)

58.19 (47–72)

No details

31.95 (21–45)

1 permanent

No details

No details

3 stem

1 acetabular component

2 performed surgery

5

Present series

13 patients

13 hips

Crowe IV

Modified trochanteric

5.2 (range, 4.9–6.1)

53.4 (range, 42.1–68.5)

5.6 (range, 2.4–9.1)

47.4 (range, 33.6–67.2)

0

2.5 (range, 1.5–3.6)

0

0

1 closed reduction

0