A
Tibial spine
B
Fibular head
C
Anterolateral capsule from the lateral tibial plateau
D
Medial collateral ligament from the medial femoral epicondyle
Explanation:Correct Option: C. A Segond fracture is an avulsion of the anterolateral capsular structures (specifically the anterolateral ligament complex) from the lateral tibial plateau. It is highly pathognomonic for an anterior cruciate ligament (ACL) tear and indicates significant anterolateral rotatory instability. (Ref: Segond, Progres Medical, 1879; Claes et al., J Anat, 2013)