Official Journal of the Italian Society of Orthopaedics and Traumatology
Table 3 Angles measured on the medial side with respect to the anteroposterior diaphyseal axis for the femoral (α) and tibial (β) components; posterior angles between the axis of the implant and the femoral (γ) and tibial (δ) diaphyseal axis according to the Knee Society Roentgenographic Evaluation System [11]
From: Cemented fixed-bearing PFC total knee arthroplasty: survival and failure analysis at 12–17 years
α angle | β angle | γ angle | δ angle | |
|---|---|---|---|---|
All implants | 94.4° (95% CI 93.9°–94.8°) | 89.1° (95% CI 88.7°–89.5°) | 3.6° (IC 95%:3.6°–3.9°) | 88.6° (95% CI 88.2°–88.9°) |
Revisioned implants | 93.5° (95% CI 91.5°–95.5°) | 87.9° (95% CI 86.2°–89.6°) | 3.7° (IC 95%:2.6°–4.8°) | 89.9° (95% CI 87.7°–90.1°) |
Nonrevisioned implants | 95.5° (95% CI 94.0°–95.1°) | 89.3° (95% CI 88.8°–89.8°) | 3.6° (IC 95%:3.1°–4.1°) | 88.8° (95% CI 88.4°–89.4°) |