A New Method of Intraoperative Reposition and Holding of Bone Fragments with Ty-Raps

Abstract

Background. The quality of fractures reposition in open osteosynthesis is one of the important factors determining the outcome of treatment. Often, the reposition and fixation of bone fragments is not an easy task. The authors propose a method of reposition and temporary fixation of fragments using plastic ty-raps used in electrical work. The aim of the study is to demonstrate the possibilities of new method of intraoperative reposition and fixation of bone fragments using plastic ty-raps. Materials and Methods. Ty-raps were sterilized before the surgery in the modes intended for the preparation of polymer products. After the fragments were dissected, their reposition and fixation are carried out with the help of clamps and bone clamps. At this stage, there is a need for the use of ty-raps, since the bone clamps prevent the plate from laying on the bone. To do this, 3-4 plastic ty-raps were applied to the areas of bone free from bone clamps in the area of the fragments contact. In those places where an intact periosteum and muscles are attached to the fragment, narrow transverse channels in soft tissues are formed with the instrument to wrap the bone with a ty-rap. Then the free end of the ty-rap is passed through its lock and tightened as much as possible. After tightening all the ty-raps, the bone clamps are removed. The applied ty-raps reliably keep the bone fragments from any displacement, even when the segment rotates. A bone plate is placed on the bone surface with tightened ty-raps. Then the plate fixed to the bone with screws. The plate should be placed on the bone without strong pressing, which allows you to remove the ty-raps from under the plate at any stage of osteosynthesis. The ty-raps are removed by cutting them with a scalpel or snacking with wire cutter, then the plate is fixed to the bone with the remaining screws. Conclusion. Ty-raps have many positive properties: they are affordable, cheap, do not lose their mechanical properties after sterilization, allow you to securely hold bone fragments during reposition, X-ray negative. The method has demonstrated convenience and reliability.