Distal Tibia | |
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TiAL (mm) | Tibial arc length: distance between the most anterior (A) and posterior (B) points of the maximal arc of the tibial mortise in the sagittal plane |
TiSR (mm) | Tibial sagittal radius: radius of the AB arc |
APG (mm) | Anterio-posterior gap: longitudinal (Y-axis) component of the distance between A and B |
APA (deg) | Anterio-posterior inclination angle: inclination angle between the X-axis and the AB segment |
MTiTh (mm) | Maximal tibial thickness: The A/P distance from the most anterior (C) to the most posterior (D) point on the tibial profile in the sagittal plane |
MDA (mm) | Longitudinal (S/I) distance between A and C |
MDV (mm) | Longitudinal (S/I) distance between the most proximal vertex of the tibial mortise (V) and the point D |
TiW (mm) | Tibial width: M/L distance of the tibial mortise calculated using the two end-points of the anterior (TiWa) and posterior (TiWp) edges |
MalW (mm) | Malleolar width: M/L distance between the most lateral point of the fibula and the most medial point of the tibia |
MLATi (deg) | Angle in the frontal plane between the M/L axis and the line joining the most distal points of the fibula and tibia |
Talus | |
TaAL (mm) | Trochlea tali arc length: distance between the most anterior (F) and posterior (G) and proximal (H) points of the trochlea tali, as seen in the sagittal projection of the talus. The suffixes m, l and c indicate the corresponding medial, lateral and central arcs, respectively |
TaW (mm) | Trochlea tali width: width between medial and lateral crests of the talar dome. The suffix a, p and c indicates this width, respectively, in the most anterior, most posterior and central location along M/L axis, i.e., of Fm F l , G m G l and H m H l segments |
TaR (mm) | Trochlea tali radius: radius of the talar dome in the sagittal plane, as identified by the arc GF. The suffixes m, l and c indicate the corresponding medial, lateral and central arcs |
MLATa (deg) | Angle in the frontal plane between the M/L axis and the line joining the two most proximal vertices of the trochlea tali |