| 摘要 |
The present invention relates to an implant for fixation of bone fragments at femur fractures, preferably subtrochantary femur fractures, said implant comprising an elongated member (9) and integral therewith, a sleeve like member. The elongated member (9) has an inner side (14) and an outer side (15), said inner side 814) being adapted to engage the bone fragment (3) including the femoral shaft (1). The elongated member (9) of the implant (8) has elongated holes (16) for screws (11) having heads (18) with contact surfaces (19) which are adapted to engage contact surfaces (17) on the elongated member (9). Each contact surface (17) on the elongated member (9) is inclined relative to the inner side (14) of said elongated member (9) such that the distance (A) between said contact surface (17) at the rear portions (16a) of the elongated hole (16) and said inner side (14) is greater than the distance (B) between said contact surface (17) and said inner side (14) at front portions (16b) of the elongated hole (16), whereby each screw (11) can move in forward direction (F) in said elongated hole (16) without said movement being counteracted or substantially counteracted by the contact surface (17) of the elongated member (9).
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