បយក: 髓内钉

Z-effect and Reverse Z-effect after Intramedullary Nails for Trochanteric Femur Fractures

The purpose of intramedullary nails with two lag screws was to increase bone purchase and rotational control inside the femoral head, preventing cutoff and eventual fixation failure. In comparison to an intramedullary nail with a single lag screw, a two lag screw design offers comparable rigidity and stability and has a noticeably higher failure strength. […]