Table 3
Radiological measurement of Alignment, Joint Line Obliquity and Knee Phenotypes.b
| No | Type of implant during surgery | Preop HKA angle | Postop HKA angle | Preop LDFA | Coronal alignment of femoral component (Post-op LDFA) | Preop MPTA | Coronal alignment of tibia component (Post-op MPTA) | JLOA preop | JLOA post op | JLO post op | JLO contralateral limb | CPAK Pre-op/Post-op | Tibial slope preop | Tibial slope postop | Intra-op patella maltracking |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | PS | 14.0 | 4.0 | 100.4 | 92.5 | 86.6 | 90.0 | 4.2 | 2.4 | AP | AP | Ⅶ/Ⅶ | 10.0 | 3.0 | Yes |
| 2 | PS | 15.9 | 3.3 | 77.8 | 87.5 | 92.6 | 91.0 | 4.9 | 5.1 | AD | AD | Ⅲ/Ⅲ | 11.0 | 2.0 | Yes |
| 3 | PS | 22.7 | 5.8 | 104.8 | 94.0 | 85.8 | 88.2 | −7.0 | −0.5 | AP | AP | Ⅶ/Ⅶ | 10.0 | 1.0 | Yes |
| 4 | PS | 19.5 | 5.9 | 100.1 | 92.9 | 83.0 | 86.9 | −6.3 | 0.0 | N | N | Ⅳ/Ⅳ | 10.0 | 3.0 | Yes |
| 5 | PS | 20.1 | 7.4 | 96.3 | 93.4 | 76.9 | 86.6 | 6.5 | 2.3 | AD | AD | Ⅰ/Ⅰ | 12.0 | 0.2 | Yes |
| 6 | PS | 26.1 | 1.6 | 80.8 | 89.1 | 93.7 | 91.7 | 10.1 | 1.0 | AD | AD | Ⅲ/Ⅲ | 6.7 | 3.3 | Yes |
| 7 | PS | 14.5 | 2.6 | 91.5 | 89.8 | 81.5 | 88.0 | 2.0 | 3.0 | AD | AD | Ⅰ/Ⅰ | 10.0 | 7.0 | No |
| 8 | CR/UC insert | 15.0 | 5.7 | 93.4 | 91.2 | 76.1 | 85.0 | 3.0 | 1.8 | AD | AD | Ⅰ/Ⅰ | 20.0 | 7.0 | No |
HKA angle = Hip-Knee-Ankle angle, LDFA = Lateral Distal Femoral Angle, MPTA = Medial Proximal Tibial Angle, JLOA = Joint Line Obliquity Angle, JLO = Joint Line Obliquity based on Coronal Plane Alignment Knee (CPAK) Classification, AP = Apex Proximal, AD = Apex Distal, N = Neutral, Roman numerals Ⅰ–Ⅸ represent knee phenotypes.
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