Table 2.
Patients treated by staged correction
| Preoperative | After first stage | Final | |
|---|---|---|---|
| MAD (range) (Lateral dev.) | 15 mm (1 mm to 25 mm) | 9.7 mm (3 mm to 14 mm) | 7 mm (4 mm to 9mm) |
| LDFA (range) | 86.7° (85° to 89°) | 86.7° (86° to 88°) | 86.7° (86° to 87°) |
| mMPTA (range) | 94.3° (89° to 101°) | 91.3° (90° to 92°) | 88.7° (88° to 89°) |
| aMPTA (range) | 79.3° (73° to 89°) | 85.0° (83° to 87°) | 85.7° (85° to 87°) |
| Compensatory varus | 15.0° (12° to 17°) | 6.3° (5° to 9°) | 3° (2° to 4°) |
| LDTA (range) | 58.0° (41° to 73°) | 78.7° (74° to 84°) | 73.7° (70° to 77°) |
| Shaft valgus (range) | 34° (31° to 38°) | 9.3° (2° to 20°) | 2.7° (2° to 3°) |
| Shaft recurvatum (range) | 31° (22° to 39°) | 0.7° (0° to 2°) | 0.7° (0° to 2°) |
aMPTA, anatomic medial proximal tibial angle; LDFA, lateral distal femoral angle; LDTA, lateral distal tibial angle; MAD, mechanical axis deviation; mMPTA, mechanical medial proximal tibial angle