Department of Orthopaedics, Hamdard Institute of Medical Sciences and Research, New Delhi, India.
Shalby Hospital, Surat, Gujarat, India.
Eur J Orthop Surg Traumatol. 2020 Aug;30(6):1119-1123. doi: 10.1007/s00590-020-02667-6. Epub 2020 Apr 10.
A jammed screw is a well-known complication of locking plates. Noncompliance to the standard techniques, nonusage of torque limiting screwdrivers and manufacturer-specific instrumentations are the common causes of jammed locking screw heads. Previously, various techniques have been described for the retrieval of jammed locking screws by damaging the screw head, using conical reverse threaded drill bits and often cutting off the plates at jammed screw sites that often generate metal debris and cause bone and soft tissue damage of unknown extent. We present a simple technique and a novel device that does not damage the screw head or the plate, and therefore, no metal debris is generated. The threads on the terminal part of the screw are used to disengage the jammed locking screw head from its locking hole.
锁定板螺钉锁死是一种众所周知的并发症。不符合标准技术、不使用扭矩限制螺丝刀和制造商专用工具是锁定螺钉头锁死的常见原因。以前,已经描述了各种技术来通过损坏螺钉头、使用锥形反向螺纹钻头以及经常在锁定螺钉部位切断板来检索锁定螺钉,这些技术通常会产生金属碎片并导致骨和软组织损伤,其程度未知。我们提出了一种简单的技术和一种新颖的装置,它不会损坏螺钉头或板,因此不会产生金属碎片。螺钉末端的螺纹用于将锁定螺钉头从锁定孔中松开。