Table 3.
Outcomes of OWHTO in literature.
| Author | No cases (mean age) | Technique | Implant | Follow-up | Outcomes |
|---|---|---|---|---|---|
| (Martin et al., 2014 (35) | 323 (46.3 y) | OWHTO | Tomofix® and Puddu® | 2 y | WOMAC: class 1 (76 at 6 months; 80 at 12 months; 80 at 24 months); Class 2 (76 at 6 months, 80 at 12 months, 76 at 24 months); Class 3 (56 at 6 months, 74 at 12 months, 82 at 24 months) |
| Floerkemeier et al., 2013 (14) | 386 | OWHTO | Tomofix® | 3.6 y | Mean Oxford Knee score 43 (range 8–48) |
| Saito et al., 2014 (63) | 78 (68 y) | OWHTO | - | 6.5 y | Knee Society Score from 49.6 (SD 11.4, 26 to 72) preoperatively to 88.1 (SD 12.5, 14 to 100) |
| Saragaglia et al., 2014 (64) | 83 (50.4 y) | 62 OWHTO; 21 double level osteotomies | - | 5.75 y | 85.5% of patients resumed sports activities, 79.5% at the same level as before surgery. Lysholm score increased from 62.5±15.53 points to 90.49±8.62 points. Tegner score and UCLA score did not decrease |
| Duivenvoorden et al., 2014 (57) | 92 (49.9y) | 47 CWHTO 45 OWHTO |
Puddu® | 7.3 y | HSS score for OWHTO increased one year after surgery (baseline 72.3±9.5; one year 80.9±13.5; six years 80.8±13.8) |
| Niemeyer et al., 2010 (65) | 69 (47y) | OWHTO | Tomofix® | 3 y | IKDC score increased from 47.2±18.71 to 72.7±17.15. Lysholm score increased from 54.2±20.76 to 79.1±16.633 |
| Harris et al., 2013 (51) | 4344 (69 meta-analysis studies) | 1625 OWHTO 2486 CWHTO |
- | 7.1 y | HSS increased from 71.2±9.7 to 91.3±6.4 at 7.5 years. Lysholm score increased from 60.5±14 to 83±13 at 7.5 years. MCS from 44.6±2.4 to 70.7±7.8 at 3 years. SF36 MCS from 75.8±15 to 83.0±15 at 2 years |
| Hernigou et al., 2010 (66) | 53 (60 y) | OWHTO + beta-TCP | Buttress plate | 10 y | Preop scores HHS no pain in 40, slight pain in 2; moderate/severe pain in 6; severe pain in 6. |
| DeMeo et al., 2010 (60) | 20 (49 y) | OWHTO | Puddu® | 8 y | Preop. scores: HHS 75.9 (range, 60–91); Lysholm 54.2 (range, 34–67); Postop scores: HHS 86.8 (range, 70–100), Lysholm 83 (range, 70–100) |
| Schröter et al., 2011 (67) | 71 (40 y) | OWHTO | HTO plate | 1 y | Preop scores: Lysholm 55.5±21.7; HHS 74.8±11.7; Tegner 2.6±0.9; IKDC 43±14.9. Postop (1 y) scores: Lysholm 73±23.9; HHS 87.8±11.0; Tegner 3.7±1.8; IKDC 66.1±21 |
| Laprade et al., 2012 (68) | 47 (40.5 y) | OWHTO | Puddu® | 3.6 y | MCS. Preop 42.9 (range, 8 to 63) Postop 65.1 (range, 10 to 100) |
| (Bode et al., 2015 (59) | 51 (47 y) | OWHTO | Tomofix® | 5 y | Preop scores: IKDC 44.6±17.8, Lysholm 52.1±20.8; Postop (5 y) scores: IKDC 69.4±18.6; Lysholm 76.6±20.5 |
| Bonasia et al., 2014 (9) | 99 (54 y) | OWHTO (1 autologous iliac bone graft + 60 HA-TCP substitute) | Puddu ® | 7.5 y | KSS increased from 135.6±33.9 to 160.5±26.3 at 5 years . WOMAC increased from 50.7±20.8 to 76.1±18.5 at 5 years |
OWHTO=open wedge high tibial osteotomy; CWHTO=close wedge high tibial osteotomy; WOMAC= Western Ontario and McMaster Universities Osteoarthritis Index; UCLA=University of California Los Angeles; HSS= Hospital for Special Surgery score; IKDC=International Knee Documentation Committee score; MCS=Modified Cincinnati score; TCP=tricalcium phosphate; HA=hydroxyapatite.