So-called anatomical stems hae a slight proximal posterior bow to reproduce the contour of the femoral endosteum, thereby predetermining the rotational alignment of the implant.

• 所谓的解剖型股骨柄近端有一略微向后的弓形，以重现股骨内部的轮廓，从而预先固定了假体的旋转方向。