Reproduce the normal anatomical centre of rotation
Restore femoral offset
Maintain equal leg lengths
Usually template off normal hip
1. LLD
2. Offset
3. Femoral component
4. Acetabular component
5. Osteotomy / femoral seating
The perpendicular distance from the centre of the femoral head to the long axis of the femur
Harris 1992
- aim for supra-physiologic offset
- avoid making offset less than original at all costs & makes longer if possible
Soft tissue balancing equals restoring femoral offset
1. Abductor lurch / Trendelenburg gait