Table 1.
Participant demographics for studies of rotational acetabular osteotomy
| Study | Study design, level of evidence | Bias | Hips/patients | Female: male | Followup (years) | Percent followup | Age (years) | Radiographic stage or unique features of cohort | Patient selection criteria |
|---|---|---|---|---|---|---|---|---|---|
| Nakamura et al. [35] (1998) | Retrospective case series, IV | NA | 145/131 | 120:11 | 13 (10–23) | 59% | 28 (11–52) | JOA Stage I; 63, II; 49, III; 21, IV; 12 |
1) Increasing hip pain; 2) dysplastic hip; 3) AP radiograph showing improved congruity in abduction |
| Takatori et al. [53] (2000) | Retrospective case series, IV | NA | 28/28 | 26:2 | 13 (10–18) | 74% | 33 (19–40) | JOA Stage III; 21, IV; 7 |
1) Significant hip pain; 2) dysplastic hip; 3) AP radiograph showing improved congruity in abduction |
| Takatori et al. [54] (2001) | Retrospective case series, IV | NA | 15/15 | 15:0 | 20 (15–22) | 68% | 24 (20–28) | JOA Stage II; 15 |
1) Significant hip pain; 2) dysplastic hip; 3) AP radiograph showing improved congruity in abduction |
| Nozawa et al. [41] (2002) | Retrospective case series, VI | NA | 50/49 | 46:3 | 11 (10–15) | 91% | 32 (13–53) | Tönnis Grade 0; 23, 1; 16, 2; 11 |
NA |
| Hasegawa et al. [15] (2002) | Retrospective case series, VI | NA | 132/126 | 119:7 | 7.5 (5–10) | 100% | 37 (15–59) | JOA Stage I; 18, II; 53, III; 61 |
1) CE angle < 10°; 2) unsuccessful conservative treatment; 3) age 15–60 years; 4) joint congruity and femoral head coverage in maximum abduction |
| Yasunaga et al. [65] (2003) | Retrospective case series, VI | NA | 26/24 (older) 63/60 (younger) |
21:3 53:7 |
8 (5–13) 8 (5–14) |
92% 100% |
51 (46–58) 34 (13–45) |
JOA Stage II; 26 Stage II; 63 |
1) CE angle < 20°; 2) progressive pain that interfered with daily activity; 3) AP radiograph showing improved joint congruity and femoral head coverage in abduction |
| Yasunaga et al. [63] (2004) | Retrospective case series, VI | NA | 61/54 | 48:6 | 11 (8–15) | 95% | 35 (13–58) | JOA Stage I; 12, II; 49 | Same as above |
| Yasunaga et al. [64] (2006] | Retrospective case series, VI | NA | 43/43 | 41:2 | 9 (2–16) | 90% | 44 (21–57) | JOA Stage III; 43 | Same as above |
| Ito et al. [20] (2007) | Retrospective case series, VI | NA | 110/101 | 88:13 | 8 (5–16) | 96% | 33 (14–56) | Tönnis Grade 0; 24, 1; 82, 2; 4 |
Hip dysplasia with moderate to severe hip pain |
| Okano et al. [42] (2008) | Retrospective case series, VI | NA | 49/48 | 43:5 | 13 (10–17) | 81% | 33 (13–54) | JOA Stage II; 49 | 1) CE angle < 20°; 2) improvement or no decrease in joint congruency on AP radiograph with hip in abduction |
| Okano et al. [43] (2008) | Retrospective case series, VI | NA | 44/42 | 40:2 | 12 (8–19) | 86% | 41 (13–54) | JOA Stage III; 44 | NA |
| Nozawa et al. [39] (2009) | Retrospective case series, VI | NA | 57/52 | 50:2 | 12 (2–21) | 83% | 45 (21–59) | JOA Stage III; 57 | Improved femoral head coverage, joint congruency and widening of the joint space on preoperative AP plain radiographs of the hip in abduction |
| Nozawa et al. [40] (2009) | Retrospective case series, VI | NA | 27/25 | 23:2 | 12 (3–12) | 100% | 27 (14–48) | All hips with previous surgical treatment | NA |
| Matsuo et al. [26] (2009) | Retrospective case series, VI | NA | 16/16 | 16:0 | 7 (5–9) | 94% | 48 (38–56) | JOA Stage III; 16 | Improvement of joint congruity and containment on AP radiograph with hip in abduction |
| Yamaguchi et al. [61] (2009) | Retrospective case series, IV | NA | 41/41 (older) 123/123 (younger) |
NA | 8.8 9.3 |
96% | 53 (50–59) | JOA Stage I or II | 1) CE angle less than 10°; 2) 30 minutes’ walk without rest dependent on hip pain; 3) unsuccessful nonoperative treatment for 6 months; 4) AP radiograph showing improved congruity in abduction |
| Hasegawa et al. [16] (2010) | Retrospective case series, IV | NA | 116/113 | NA | Minimum joint space | 100% | Minimum joint space < 3 mm | 1) unsuccessful conservative treatment; 2) age 15–60 years; 3) ROM; flexion 60°, abdudction.20°; 4) JOA stage 1, 2, 3 with better congruence was assessed by an abduction AP radiographic study |
|
| 18 | ≦ 1 mm; 10 | 40 | |||||||
| 49 | ≧1.1 but < 2 mm; 10 | 44 | |||||||
| 49 | ≧2.1 but < 3 mm; 10 | 43 | |||||||
| Fujii et al. [10] (2011) | Retrospective case series, VI | NA | 121/121 | NA | 10 (2–18) | 100% | 40 (13–64) | Kellgren-Lawrence Grade 1; 25, 2; 68, 3; 28 | 1) CE angle < 20°; 2) pain in the hip that interfered with daily activities; 3) improvement of joint congruity and containment on AP radiograph with hip in abduction |
| Ito et al. [21] (2011) | Retrospective case series, IV | NA | 41/41 (older) 117/117 (younger) |
34:7 100:17 |
11 (5–19) 11 (5–20) |
95% | 47 (40–56) 27 (12–39) |
Tönnis 0; 10, 1; 29, 2; 2 0; 30, 1; 83, 2; 4 |
1) CE angle less than 16°; 2) congruent hip joint with hip abduction |
NA = data not available; JOA = Japanese Orthopaedic Association; CE = center-edge