The arterial supply of the femoral head is mostly by medial circumflex femoral artery.
The blood supply of the femoral head is supplied by arterial ring (trochanteric anastomosis) around the neck of femur constituted by :-
• Medial and lateral circumflex femoral artery, which are the branches of profunda femoris artery .
• Superior and inferior gluteal vessels ( minor contributions ) .
In the fetus and early postnatal period the medial and lateral circumflex femoral artery supplies equally. Whereas in later life the supply of the lateral circumflex femoral artery diminishes .and it is mainly supplied by two main branches of the medial circumflex femoral artery.