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Saturday, October 9, 2010

Why femoral neck fracture have a poor capacity of healing?

The femoral head obtains its blood supply from three sources:
1. Intramedullary vessels in the femoral neck

2. Ascending cervical branches of medial & lateral circumflex

3. Vessels of ligamentum artery
Why femoral neck fracture has high risk of avn?

Blood supply is interrupted due to tearing of capsular blood vessel




They have a poor capacity of healing because:

1. Main blood supply is interrupted due to tearing of capsular blood vessel

2. Difficult for callus formation à because intra- articular bone has only flimsy periosteum and has no contact with soft tissue

3. synovial fluid prevent blood clot for haematoma formation

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