Study and reference | Year | Hips | Sex (boy) | Mean age (years) | Follow-up (year) | Open physis (%) | PAO | Previous hip surgery | Radiologic outcomes (before to after surgery) | Stulberg classification | Function | Hip ROM | Complications |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Ganz et al | 2011 | 14 (8 FHRO + PAO) | NR | NR | > 3 years | NR | PAO (n = 8) | NR | NR | NR | The motion was improved without significant pain for all patients | NR | Subsequent surgical procedures (n = 4): varus intertrochanteric osteotomy (n = 1) and PAOs (n = 3) |
Siebenrock et al | 2015 | 11 (4 had PAO + FHRO) | 7 (64%) | 13 | 5 | 1 (9.1%) | Triple (n = 2) PAO (n = 2) | Varus intertrochanteric osteotomy (n = 1) | Head sphericity:72 to 85% Extrusion index: 47 to 20% LCEA: 1 to 26° Shenton’s line: All intact (100%) Acetabular index: 17 to 7° Centrum–collum–diaphyseal angle: 133 to 139° Axial alpha angle: 40 to 42° | Before: V (n = 2) IV (n = 2) After: II (n = 5) III (n = 4) IV (n = 1) | Merle d’Aubigne´-Postel score: 14.5 to 15.7 | Flexion: 94 to 91 Internal rotation: 13 to 15 External rotation: 28 to 23 | Subsequent surgical procedures (n = 7): hardware removal (n = 2) and containment surgery (n = 5) Heterotopic ossification Brooker Grade II (n = 1) |
Clohisy et al | 2018 | 6 (5 with LCPD) | 0 | 13.6 | 3.3 | NR | n = 4 | NR | LCEA: 2.5° to 30.6° ACEA: 18. 2° to 35.2° Tönnis: 20.1° to 2.5° Extrusion index: 45.3 to 13.6% α angle (Dunn view): 68.5 to 40.2° α angle (frog lateral view): 65.7 to 32.7° | Before: IV (n = 6) | HHS: 53.5 to 83.4 WOMAC: 62.3 to 90.3 | NR | wound infection (n = 1) |
Present study | 2022 | 4 | 4 (100%) | 10 | 5 | 4 (100%) | Triple (n = 2) Ganz (n = 2) | Abductor tenotomy (n = 1) | LCEA: 2.8° to 32° ACEA: 13.8 to 30° Tönnis: 18° to 8° Sphericity index: 83.3 to 95% Extrusion index: 39.8 to 7% Shenton’s line: All non-disrupted | Before: V (n = 2) IV (n = 2) After: II (n = 3) III (n = 1) | HHS: 69 to 96.3 Merle d’Aubigne´-Postel score: 12.3 to 18 | Total: 222.5° to 267.5° Flexion: 122.5 to 122.5 Abduction: 26.3 to 38.8 Adduction: 17.5 to 30 Internal rotation: 13.8 to 31.3 External rotation: 42.5 to 45 | Heterotopic ossification (n = 3 grade II and n = 1 grade I) |