The bundles of trabeculae in proximal femur are:

• Primary compressive
• Primary tensile
• Secondary compressive
• Secondary tensile

Ward’s traingle is an area of the femoral neck formed by the intersection of 3 bundles of trabeculae

• primary compressive trabeculae medially
• primary tensile and secondary compressive trabeculae laterally

1. Ward’s Triangle
2. Femoral artery Doppler pattern
3. Looser’s zone
4. Cambium layer