BLOOD SUPPLY OF FEMORAL HEAD
- Intra osseous blood supply – Trueta and Harrison
- primary supply – terminal branches of Medial circumflex femoral artery (Trueta's lateral epiphyseal arteries) - >2/3rd of the femoral head – supra lateral head is exclusively supplied by this artery
- artery of ligamentum teres – br. Of Obturator artery – Trueta's medial epiphyseal artery – negligible to ½ of epiphysis
- Extra osseus blood supply – Crock and Chung
- extra capsular arterial ring – at base of NOF
- posteriorly by large branch of medial circumflex artery
- anteriorly by branch from lateral femoral circumflex artery
-
ascending cervical branches (retinacular vessels) - surface of femoral neck- anterior, posterior, medial and lateral groups
- lateral is the most important
- proximity to NOF makes vulnerable in #
- arteries of ligamentum teres
- subsynovial intra articular arterial ring – less distinct – epiphyseal arteries arise from this ring – most important is lateral epiphyseal artery
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