Necks of femur - blood supply

Neck of femur - blood supply

1. Extra capsular arterial ring:

  • formed by medial and lateral circumflex femoral arteries.
  • chief blood supply of head & neck of femur, formed mainly by medial circumflex.
  • it gives retinacular vessels that supply 2/3 rd of head.

2. Artery of Ligamentum teres

  • foveal or medial epiphyseal arery.
  • branch of obturator artery.
  • forms main blood supply in < 8 year.

3. Intraosseous blood supply

  • via metaphysis