Figure 7

According to the oblique triangle configuration, the position of the three screws on the cross-section of the femoral neck isthmus by the 3-Matic software. (a) The blue line was the contour of the femoral neck isthmus, and the yellow dashed line was the fitted ellipse of the femoral neck isthmus. (b) The configuration of the screws according to the cross-section of the FNI. (c) the OTC in anteroposterior view, (d) the OTC in lateral view.