A
Patellar maltracking and lateral subluxation
B
Medial collateral ligament tightness in mid-flexion
C
Symmetrical flexion gap widening
D
Cam-post impingement during terminal extension
Explanation:Correct Option: A. Internal rotation of the femoral component relative to the epicondylar axis medializes the trochlear groove. This effectively increases the Q-angle of the extensor mechanism, leading to lateral patellar tilt, maltracking, and potential subluxation or dislocation. (Ref: Berger et al., Clin Orthop Relat Res, 1998)