对侧皮质锁定技术治疗股骨远端骨折的研究近况

Recent development of far cortical locking technology for treatment of distal femur fractures

摘要:

传统锁定螺钉装置存在刚度较高、近钢板侧应力集中的缺陷。近年来，因为传统锁定螺钉装置治疗股骨远端骨折愈合率较低，对侧皮质锁定技术（FCL）逐渐受到重视。其能降低传统锁定螺钉装置80%的固定强度，且保留锁定螺钉装置整体固定强度，提供弹性固定和骨折断端的平行微动，骨折端的骨痂生长较多、对称。在治疗骨折的理论上，FCL有新突破。在动物实验和初步临床应用中，可以使传统锁定螺钉装置治疗股骨远端骨折的愈合率提高。

Abstract:

Traditional locking screw constructs have defects of high stiffness and strain concentration at the near cortex under the plate. Recently, a kind of far cortical locking technology motivated by a high rate of nonunion of distal femur fractures treated with traditional locking screw constructs has been gradually developed. It can reduce the stiffness of traditional locking screw constructs by 80% while retain the same strength as the locking screw constructs, provide flexible fixation and parallel micro-motion, and induce more and symmetrical callus formation. There is a new breakthrough in theory in far cortical locking technology for treatment of fractures. It has showed that far cortical locking technology may reduce the high rate of nonunion of distal femur fractures in animal experiment and primary clinical application.