Avascular necrosis of the femor head

Question 1

What are the trochanteric anastomosis that supplies the head and neck of the femur?

Answer 1

superior and inferior gluteal AA medial and lateral femoral circumflex AA.

Question 2

What are the arteries that run up the neck of the femur below the zone of obicularis?

Answer 2

retnacular arteries

they are easily damaged andy may cause necrosis of the neck and head of femur if damaged