The implementation of the femoral neck surgical central axis guide pins to establish the stable implanting-screws spatial coordinate system

By utilizing the AC-FNB as a landmark, GPs-SCA could be successfully implanted within the allowable error ranges to facilitate building a reliable spatial rectangular coordinate system for controllable implanting screws. This coordinate system offers convenience in determining the directions of implanting screws, standardizing orthogonal fluoroscopies, registering X-rays and CT images, and converting X-ray data to axial coordinates.