The chief source of blood supply to head and neck of femur is derived from

The head of the femur is paly supplied by a branch of obturator aery along the ligamentum teres.Main aerial supply is from retinacular aeries, branches of the medial femoral circumflex aery.These aeries get injured in intracapsular fracture of neck of femur, leading to avascular necrosis of the head.BDC 6th edition (Abdomen & lower limb) pg: 32