Knee X-Ray AP Weight-Bearing
Assessment of the femorotibial joint space under physiological loading conditions: quantification of cartilage reduction for osteoarthritis classification (Kellgren-Lawrence), measurement of the tibiofemoral axis and proximal HKA (Hip-Knee-Ankle) angle.
Medial and lateral femorotibial joint space measurable.
Femoral condyles and tibial plateau symmetrical.
Joint line centred at the inferior pole of the patella.
No limb rotation (fibula partially overlapping the tibia laterally).
Symmetrical bilateral loading.
Asymmetric loading (false joint space narrowing from unilateral loading).
Knee in flexion — overestimates joint space reduction.
Limb rotation — false joint space asymmetry.
Centring too high or too low relative to the joint line.
Paziente in piedi con peso equamente distribuito su entrambi gli arti. Ginocchio il più possibile esteso (0°). Rotule rivolte…
Full card in the app
Positioning, centring, DR/CR parameters and practical notes
