Table 3.
Alignment classification of healthy young adult population based on the CPAK classification system
| Side | Varus aHKA (n = 202) | Neutral aHKA (n = 235) | Valgus aHKA (n = 63) | |||
|---|---|---|---|---|---|---|
| Right | Left | Right | Left | Right | Left | |
| Number | 92 | 110 | 117 | 118 | 41 | 22 |
| mHKA | – 4.04 (2.71) | – 4 (2.76) | – 0.71 (1.78) | – 0.80 (1.79) | 2.70 (1.50) | 2.59 (1.70) |
| mLDFA | 90.56 (2.01) | 91.02 (2.61) | 87.76 (2.33) | 87.77 (2.53) | 85.58 (2.50) | 86.68 (3.07) |
| mMPTA | 85.54 (2.04) | 85.82 (2.50) | 87.21 (2.17) | 88.06 (2.37) | 89.65 (2.91) | 90.31 (2.98) |
| aHKA | – 5.02 (1.75) | – 5.2 (2.34) | – 0.54 (1.29) | – 0.18 (1.33) | 4.07 (1.60) | 3.63 (1.21) |
| JLO | 176.10 (3.66) | 176.85 (4.54) | 175.24 (5.19) | 176.32 (4.51) | 175.24 (5.19) | 177 (5.93) |
| CPAK phenotype assessment | |
|---|---|
| CPAK 1 | 106 (21.2%) |
| CPAK 2 | 128 (25.6%) |
| CPAK 3 | 30 (6%) |
| CPAK 4 | 84 (16.8%) |
| CPAK 5 | 98 (19.6%) |
| CPAK 6 | 29 (5.8%) |
| CPAK 7 | 12 (2.4%) |
| CPAK 8 | 9 (1.8%) |
| CPAK 9 | 4 (0.8%) |
mLDFA mechanical lateral distal femoral angle, mMPTA mechanical medial proximal tibial angle, aHKA arithmetic HKA