The most likely reason for avascular necrosis in an 80-year-old woman following hip fracture is that the:
A) fracture included the head of the femur.
B) fracture split the neck of the femur longitudinally.
C) fracture included lacerating the transverse acetabular ligament.
D) retinacular branches of the medial femoral circumflex artery were severed by the fracture.
E) deep artery of the thigh was severed by the fracture.
Ans: D
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