Official Journal of the Italian Society of Orthopaedics and Traumatology
Table 2 Demographic and radiologic features of end-stage lateral knee osteoarthritis with differing alignment
Varus (n = 50) | Neutral (n = 30) | Valgus (n = 53) | p value | |
|---|---|---|---|---|
Mean age (range), years | 69.3 (57–80) | 69.3 (60–79) | 68.1 (57–83) | 0.60 |
Sex, M/F | 4/46 | 3/27 | 7/46 | 0.62 |
Body mass index, kg/m2 | 25.1 ± 3.3 | 26.2 ± 2.8 | 25.8 ± 3.2 | 0.44 |
Lateral compartment Kellgren–Lawrence grade at extension | 2.3 ± 0.7 | 2.5 ± 0.8 | 2.9 ± 0.8 | <0.01 |
Lateral compartment joint space width at extension, mm | 2.3 ± 0.8 | 1.9 ± 0.9 | 1.6 ± 0.8 | 0.03 |
Radiologic mismatch, % | 50.0 | 60.0 | 84.9 | <0.01 |
Medial compartment Kellgren–Lawrence grade at extension | 2.1 ± 0.4 | 2.0 ± 0.4 | 1.8 ± 0.5 | 0.03 |
Medial compartment joint space width at extension, mm | 3.1 ± 1.2 | 3.4 ± 1.0 | 4.3 ± 0.9 | 0.01 |
Tibia vara angle, ° | 4.6 ± 2.7 | 3.8 ± 2.3 | 2.7 ± 2.9 | <0.01 |
Tibial slope angle, ° | 9.7 ± 3.1 | 10.1 ± 2.8 | 9.8 ± 3.2 | 0.26 |