The clinical evidence behind the current implants used for proximal femoral fractures is weak considering the number of implants used worldwide .
Sporadic evaluation is not sufficient to identify long term problems .
INTRODUCTION Evaluation of the long-term performance of  implants used in trauma surgery relies on post-marked clinical studies since no registry based implant assessment exists .
The purpose of this study was to evaluate the evidence of performance of implants  currently used for treating proximal femoral fractures ( PFF ) in Denmark .
Fixation of femoral neck fracture. A randomized 2-year follow-up study of hook pins and sliding screw plate in 222 patients.
We compared fixation with hook pins or sliding screw plate in a prospect i ve r and omized study of 222 patients with a cervical hip fracture . Radiographic evidence of early redisplacement , nonunion , or late segmental collapse was found in 43 of 122 patients operated on with two hook pins and in 40 of 100 patients operated on with the sliding screw plate . According to the actuarial method , the failure rate after 2 years was 38 % with hook pins and 46 % with screw plates , which not is a significant difference . Due to early redisplacement , reoperation with an endoprosthesis was performed within 0.5 ( 2 ) years in 11 ( 22 ) patients in the hook-pin group and in 4 ( 17 ) patients in the sliding-screw plate group
The clinical evidence behind the current implants used for proximal femoral fractures is weak considering the number of implants used worldwide .
Sporadic evaluation is not sufficient to identify long term problems .
INTRODUCTION Evaluation of the long-term performance of  implants used in trauma surgery relies on post-marked clinical studies since no registry based implant assessment exists .
The purpose of this study was to evaluate the evidence of performance of implants  currently used for treating proximal femoral fractures ( PFF ) in Denmark .