Guide for femoral neck osteotomy
First Claim
1. A guide for femoral neck osteotomy, comprising a longitudinal rod having attaching means at the lower end thereof for securing the longitudinal rod to a femur at the greater trochanter, a tranversely extending support arm secured to the longitudinal rod adjacent the lower end thereof, a guide bar connected to the support arm having at least one elongate planar surface downwardly and outwardly extending at an angle of 45°
- to the axis of the longitudinal rod, and a keyed connection between the support arm and the guide bar whereby the guide bar is free to slide laterally on the support arm toward and away from the longitudinal rod but is prevented from rotating relative to the support arm.
7 Assignments
0 Petitions
Accused Products
Abstract
A guide for femoral neck osteotomy comprises a longitudinal rod having attaching structure at the lower end thereof for securing the rod to a femur at the greater trochanter. A transversely extending support arm is secured to the rod adjacent the lower end thereof, and a guide bar is connected to the support arm. The guide bar has at least one elongate planar surface disposed at an angle of 45° to the axis of the rod. In use, the rod is aligned with the long shaft axis of the femur and attached to the femur at the greater trochanter. The rod is manipulated until the support arm and the long shaft axis of the tibia are disposed in the same plane. This procedure properly positions the elongate planar surface of the guide bar whereby an instrument in engagement with that surface traverses the femoral neck at an angle of 45° to the long shaft axis of the femur.
-
Citations
13 Claims
-
1. A guide for femoral neck osteotomy, comprising a longitudinal rod having attaching means at the lower end thereof for securing the longitudinal rod to a femur at the greater trochanter, a tranversely extending support arm secured to the longitudinal rod adjacent the lower end thereof, a guide bar connected to the support arm having at least one elongate planar surface downwardly and outwardly extending at an angle of 45°
- to the axis of the longitudinal rod, and a keyed connection between the support arm and the guide bar whereby the guide bar is free to slide laterally on the support arm toward and away from the longitudinal rod but is prevented from rotating relative to the support arm.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
11. A method for removal of the neck and head of a femur, comprising the steps of aligning the longitudinal axis of a rod with the long shaft axis of the femur;
- attaching the rod to the femur at the greater trochanter;
positioning a transverse support arm secured to the rod at the lower end portion thereof so that the axis of the support arm and the long shaft axis of the tibia are disposed in the same plane;
providing a guide bar on the support arm having an elongate planar surface downwardly and outwardly extending at an angle of 45°
to the longitudinal axis of the rod; and
guiding a cutting instrument against the femoral neck while the instrument is in engagement with the elongate planar surface on the guide bar, whereby the instrument traverses the femoral neck at an angle of 45°
to the long shaft axis of the femur. - View Dependent Claims (12)
- attaching the rod to the femur at the greater trochanter;
-
13. A guide for femoral neck osteotomy, comprising a longitudinal rod having attaching means at the lower end thereof for securing the longitudinal rod to a femur at the greater trochanter, a transversely extending support arm secured to the longitudinal rod adjacent the lower end thereof, and a guide bar connected to the support arm having at least one elongate planar surface downwardly and outwardly extending at an angle of 45°
- to the axis of the longitudinal rod, the lower end of the longitudinal rod including a transverse flat surface and the attaching means comprising a spike downwardly extending from the transverse flat surface and having a longitudinal axis aligned with the axis of the longitudinal rod.
Specification