Retinacular Arteries (their formation)



- Discussion:
    - Ascending Cervical Branches travel proximally under the hip capsule and continue proximally along neck deep to synovial membrane toward the femoral head;
           - these arteries are known as retinacular arteries;
           - as cervical arteries traverse superficial surface of femoral neck, they send many small branches into metaphysis of femoral neck;
    - superior retinaculum vessels important for femoral head circulation;
         - derived from MFCA & LFCA (along w/ inferior gluteal & 1st profunda perforating;
         - 3 chief groups:
              - posterior inferior - posterior superior (from MFCA);
              - anterior (from LFCA); - two nutrient arteries:
              - from upper perforating arteriest of the profunda femoris;
              - they enter the femur close to the linea aspera and run up & down the marrow cavity;
    - close proximity of retinacular arteries puts them at risk of injury in any fracture of the femoral neck which may lead to AVN



Original Text by Clifford R. Wheeless, III, MD.

Last updated by Data Trace Staff on Thursday, September 13, 2012 4:06 pm