Parmar Vinay, Kumar Shyam, Aster Aster, Harper William H
Department of Orthopaedic Surgery, University of Leicester, Clinical Sciences Building, Glenfield Hospital, Groby Road, Leicester LE3 9QP, United Kingdom.
Acta Orthop Belg. 2005 Jun;71(3):260-3.
This review considers methods used to quantify lag screw placement within the femoral head following proximal femoral fracture. Implants used for fixation of femoral neck fractures can lead to unwanted outcomes in some patients. Cutting out of the screw within the femoral head has been shown to be the commonest cause of failure and is related to lag screw placement within the femur. Until now, there have been two methods published which quantify lag screw position within the femoral head. These are the concepts of 'Tip Apex Distance' and Parker's ratio method of lag screw placement. We shall discuss each one in turn and their implications in terms of fracture fixation failure.
本综述探讨了用于量化股骨近端骨折后股骨头内拉力螺钉置入情况的方法。用于固定股骨颈骨折的植入物在某些患者中可能会导致不良后果。已表明股骨头内螺钉穿出是最常见的失败原因，且与股骨内拉力螺钉的置入有关。到目前为止，已发表了两种量化股骨头内拉力螺钉位置的方法。这些是“尖顶距”概念和拉力螺钉置入的帕克比率法。我们将依次讨论这两种方法及其在骨折固定失败方面的影响。
