Schöttle and colleagues’ radiographic landmark for femoral tunnel placement in medial patellofemoral ligament reconstruction. Two perpendicular lines to line 1 are drawn, intersecting the contact point of the medial condyle and posterior cortex (point 1, line 2) and intersecting the most posterior point of the Blumensaat line (point 2, line 3). For determination of vertical position, distance between line 2 and the lead ball center is measured as is the distance between line 2 and line 3. SEE TECHNIQUE 47.1.