Patent ID: 8398719
Filing Date: 2013-03-19
Classification: A61B,A61F

Abstract:
1. A method for fixating a femoral prosthesis to a proximal end of a femur comprising; providing an implant body comprising: inserting the implant body into an open neck of a femur so that the implant body is substantially straight along the longitudinal axis of the femoral neck; pressing the implant body tightly into the femoral neck so that the shoulder wedges into the femoral neck and increases hoop stress at the femoral neck and the retentive effect of the shoulder in the neck and so that the wedge penetrates the spongiosa inside the femur to secure the implant body in the femur; positioning a neck sizing template on a resected surface of the femoral neck, the neck sizing template comprising: installing a first guide wire into the neck of the femur through one of the first aperture and the second aperture of the neck sizing template, the one of the first aperture and the second aperture to direct the position and angle of the first guide wire relative to the neck of the femur; forming a first channel in the femur around the first guide wire, the first channel formed using a cannulated tool, the method further comprising positioning the first guide wire through a cannula of the cannulated tool; installing a second guide wire into the neck of the femur through one of the first aperture and the second aperture of the neck sizing template, the one of the first aperture and the second aperture to direct the position and angle of the second guide wire relative to the neck of the femur; and forming a second channel in the femur around the second guide wire, the second channel formed using a cannulated tool, the method further comprising positioning the second guide wire through a cannula of the cannulated tool; wherein inserting the implant body into the open neck of the femur further comprises: positioning the first guide wire into one of the medial cannula and the lateral cannula of the implant body; positioning the second guide wire into the other of the medial cannula and the lateral cannula of the implant body; aligning the medial column with one of the first hole and the second hole and the lateral column with the other of the first hole and the second hole; and sliding the implant body along the first and second guide wires to guide the implant body into the femur.