Table 5.
Studies reporting survival rate and predictors of failure
| Study | Number of hips | Age at surgery (years) (range) | Type of osteotomy | Followup (years) | End points | Survival | Predictive factors |
|---|---|---|---|---|---|---|---|
| Hartig-Andreasen et al. [11] | 401 | 34 (13–61) | PAO | 8 (4–12) | THA | 10 years: 75% | Age, OA, suboptimal achieved center-edge angle, reduced postoperative joint space width incongruence |
| Troelsen et al. [43] | 116 | 30 (14–57) | PAO | 7 (5–9) | THA | 5 years: 91% 9 years: 82% |
Severe dysplasia, presence of os acetabuli, OA, excessive lateral and proximal dislocation |
| Matheney et al. [21] | 135 | 27 (10–45) | PAO | 9 | WOMAC™ score ≥ 10 points, THA | 5 years: 96% 10 years: 84% |
Age > 35 years, poor congruency |
| Steppacher et al. [33] |
75 | 29 (13–56) | PAO | 20 (19–23) | THA | 10 years: 85% 20 years: 61% |
Age, preoperative Merle d’Aubigné-Postel score, positive impingement test, limb, OA grade, insufficient acetabular coverage |
| Kralj et al. [17] | 26 | 34 | PAO | 12 (7–15) | THA, OA Tönnis Grade 3, WOMAC™ > 20 points | 10 years: 54% | Postoperative normalized peak contact stress, preoperative WOMACTM score, preoperative Tönnis score |
| Hsieh et al. [14] | 46 | 31 (18–58) | Modified PAO | 4 (2–5) | Nonunion of osteotomy | 4 years: 100% | – |
| Naito et al. [24] | 128 | 35 (16–59) | Modified PAO | 4 (2–8) | Pubic nonunion | 4 years: 98% | – |
| van Hellemondt et al. [44] | 51 | 28 (15–46) | Triple | 15 (13–20) | THA, Merle d’Aubigné-Postel score | 15 years: 64% | Preoperative OA, preoperatively low Merle d’Aubigné-Postel score |
| de Kleuver et al. [4, 5] |
51 | 28 (14–46) | Triple | 10 (8–15) | THA, progression of OA, walking ability | 10 years: 73% | Reduced coverage of the posterolateral quadrant of the femoral head |
| Yanagimoto et al. [48] | 74 | 32 (6–64) | Chiari | 13 (10–20) | Decreased Japanese Orthopaedic Association hip score, THA | 13 years: 91% | Advanced DDH, spherical femoral head |
| Ohashi et al. [26] | 86 | 18 (6–48) | Chiari | 17 (4–37) | Progression of OA | 10 years: 84% | Severity of the preoperative OA, shape of the femoral head, the level of osteotomy |
| Current study | Group I: 43 | 28 (13–44) | PAO | 11 (10–14) | THA, progression of OA, Merle d’Aubigné-Postel score < 15 points | Group I: 10 years: 91% | Age > 30 years, preoperative Merle d’Aubigne-Postel score < 15, preoperative positive Trendelenburg sign, nonspherical head, preoperative OA ≥ Grade 1, Severin > Grade 3, excessive acetabular anteversion, acetabular retroversion, LCE < 22° (undercoverage), no offset correction in a nonspherical femoral head |
| Group II: 122 | 29 (12–55) | Group II: 10 years: 80% |
PAO = periacetabular osteotomy; OA = osteoarthritis; DDH = developmental dysplasia of the hip; LCE = lateral center-edge angle.