Outstanding issues of modern osteosynthesis of humerus fractures


  • P.I. Bilinskyi Bogomolets National Medical University, Kyiv, Ukraine
  • Y.P. Tsiura Bogomolets National Medical University, Kyiv, Ukraine
  • V.R. Antoniv Bogomolets National Medical University, Kyiv, Ukraine




humerus fractures, problems of modern osteosynthesis of humerus fractures


Background. Over the past twenty years, there have been significant changes in the treatment of humerus fractures. Many high-tech tools have appeared in osteosynthesis. Numerous workshops and short-term courses do not sufficiently highlight vulnerabilities of osteosynthesis with fixators. Unfortunately, in many cases, the treatment results of humerus fractures could be better. The purpose of the work was the analysis of biomechanical aspects of modern fixators for humerus fractures osteosynthesis, causes for complications and unsatisfactory results in the application of fixators. Materials and methods. We have analyzed the available literature data, X-rays of interesting cases, patients’ histories with complications, and negative results of humerus fractures osteosynthesis by intramedullary blocking rods and LCP-plates. Results. The outcome of the humerus fracture treatment largely depends on the understanding of the process of reparative regeneration. There is a tendency for a mechanistic approach in the treatment of bone fractures and their consequences. In the case of surgical neck fractures, the curved LCP-plates are used. They require the placement of at least 4 blocking screws into the bone epiphyses. This often leads to the development of aseptic necrosis. The lack of the anatomical reposition of the fragments as well as the placement of 5–7 screws into the humerus head leads to deforming arthrosis of the shoulder joint. We have observed similar complications in 10 patients. The placement of a significant number of screws into the bone head can lead to complications when a fixator breaks at the point of the plate tension change. In complex cases of humerus fractures and complications of osteosynthesis with other fixators in 170 patients, we used a device for fixing bone fragments that has been developed by us. It is protected by the patent of Ukraine N 17502. The device eliminates harmful pressure of a plate on a bone, carries out a stable osteosynthesis using the shortest possible plate. Blocking screws in a plate with insufficiently reposed fragments cause the development of pseudoarthrosis. A common complication of LCP plates is the welding effect between the screw head and the plate. Against the background of osteoporosis of the bone, the LCP plate actually acts as a prosthesis, which exacerbates the effects of osteoporosis. Late LCP plate removal in such cases might cause humerus refraction. Conclusions. Osteosynthesis of humerus fractures using LCP plates has significant advantages over traditional contact plates. Complications and negative results of osteosynthesis may occur when they are used inappropriately and when the correct methods and techniques of surgical intervention and the appropriate postoperative care are not followed.


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Original Researches