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      Contribution of G.A. Ilizarov to bone reconstruction: historical achievements and state of the art

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          Abstract

          Methodological solutions of Prof. G.A. Ilizarov are the core stone of the contemporary bone lengthening and reconstruction surgery. They have been acknowledged in the orthopaedic world as one of the greatest contributions to treating bone pathologies. The Ilizarov method of transosseous compression–distraction osteosynthesis has been widely used for managing bone non-union and defects, bone infection, congenital and posttraumatic limb length discrepancies, hand and foot disorders. The optimal conditions for implementing distraction and compression osteogenesis were proven by numerous experimental studies that Prof. G.A. Ilizarov organized and supervised at a large orthopaedic research institute in Kurgan. The tension stress effect on regeneration and growth of tissues was thoroughly investigated with radiographic, histological and biochemical methods. The impact of the Ilizarov method on the progress of bone lengthening and reconstruction surgery could be called revolutionary.

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          The tension-stress effect on the genesis and growth of tissues: Part II. The influence of the rate and frequency of distraction.

          To assess the influence of both the rate and the frequency of distraction on osteogenesis during limb elongation, a canine tibia was used with various combinations of distraction rates (0.5 mm, 1.0 mm, or 2.0 mm per day) and distraction frequencies (one step per day, four steps per day, 60 steps per day). The distractions were performed after both open osteotomy and closed osteoclasis. Histomorphic and biochemical studies were conducted on the elongated osseous tissue, fascia, skeletal muscle, smooth muscle, blood vessels, nerves, and skin. It was determined that distraction at a rate of 0.5 mm per day often led to premature consolidation of the lengthening bone, while a distraction rate of 2.0 mm per day often resulted in undesirable changes within elongating tissues. A distraction rate of 1.0 mm per day led to the best results. It was also observed that the greater the distraction frequency, the better the outcome. With optimum preservation of periosseous tissues, bone marrow, and blood supply at the time of osteotomy, stability of external fixation, and 1.0 mm per day of distraction in four steps, osteogenesis within the distraction gap of an elongating bone takes place by the formation of a physislike structure, in which new bone forms in parallel columns extending in both directions from a central growth zone. The growth plate that forms under the influence of tension-stress has features of both physeal and intramembranous ossification, yet is neither; instead, the distraction regenerated bone is unique, providing numerous applications in clinical traumatology, orthopedics, and other medical disciplines.
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            The tension-stress effect on the genesis and growth of tissues. Part I. The influence of stability of fixation and soft-tissue preservation.

            To evaluate the optimum conditions for osteogenesis during limb lengthening and to study the changes in soft tissues undergoing elongation, a series of experiments were performed on the canine tibia. The experiments used the transfixion-wire, Ilizarov circular external skeletal fixator in configurations of differing stability of fixation in combination with a second variable, i.e., preservation of the periosteum, bone marrow, and medullary blood supply. Both increased fixator stability, and maximum preservation of the periosseous and intraosseous soft tissues enhanced bone formation during limb lengthening. To assess the role that the direction of the elongation vector plays in osteogenesis, canine tibiae were widened rather than lengthened in a second series of experiments using an Ilizarov apparatus modified for lateral distraction. The new bone formed parallel to the tension vector even when perpendicular to the bone's mechanical axis. As in longitudinal lengthening, damage to the bone marrow inhibits osteogenesis occurring by the influence of a lateral tension-stress vector. In a third series of experiments, half- and full-circumference cortical defects were created in canine tibiae to study the osteogenic potential of the marrow. New bone formed rapidly, even when the marrow was separated from the surrounding periosseous soft tissues by a sheet of polyvinyl chloride, attesting to the importance of marrow element preservation during osteotomy for limb lengthening.
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              A Systematic Review and Meta-Analysis of Ilizarov Methods in the Treatment of Infected Nonunion of Tibia and Femur

              Background Infected nonunion of tibia and femur are common in clinical practice, however, the treatment of these diseases has still been a challenge for orthopaedic surgeons. Ilizarov methods can eradicate infection, compensate bone defects and promote the bone union through progressive bone histogenesis. The objective of this systematic review was to review current available studies reporting on Ilizarov methods in the treatment of infected nonunion of tibia and femur, and to perform meta-analysis of bone and functional results and complications to evaluate the efficacy of Ilizarov methods. Methods A comprehensive literature search was performed from the SCI, PubMed, Cochrane Library; and Embase between January 1995 and August 2015. Some major data were statistically analyzed using weighted means based on the sample size in each study by SPSS 13.0, including number of patients, mean age, mean previous surgical procedures, mean bone defects, mean length of follow-up, bone union, complications per patient, external fixation time, and external fixation index(EFI). Bone results (excellent, good, fair and poor rate), functional results (excellent, good, fair and poor rate) and complications were analyzed by Stata 9.0. Findings A total of 590 patients from 24 studies were included in this systematic review. The average of bone union rate was 97.26% in all included studies. The poor rate in bone results and functional results was 8% (95%CI, 0.04–0.12; I2 = 44.1%, P = 0.065) and 10% (95%CI, 0.05–0.14; I2 = 34.7%, P = 0.121) in patients with infected nonunion of tibia and femur treated by Ilizarov methods. The rate of refracture, malunion, infectious recurrence, knee stiffness, amputation, limb edema and peroneal nerve palsy was respectively 4%, 7%, 5%, 12%, 4%, 13% and 13%. Conclusions Our systematic review showed that the patients with infected nonunion of tibia and femur treated by Ilizarov methods had a low rate of poor bone and functional results. Therefore, Ilizarov methods may be a good choice for the treatment of infected nonunion of tibia and femur.
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                Author and article information

                Contributors
                0073522454570 , tmalkova@mail.ru
                Journal
                Strategies Trauma Limb Reconstr
                Strategies Trauma Limb Reconstr
                Strategies in Trauma and Limb Reconstruction
                Springer Milan (Milan )
                1828-8936
                1828-8928
                18 July 2016
                18 July 2016
                November 2016
                : 11
                : 3
                : 145-152
                Affiliations
                Russian Ilizarov Scientific Center for Restorative Traumatology and Orthopaedics, 6, M. Ulianova Street, Kurgan, Russian Federation 640014
                Article
                261
                10.1007/s11751-016-0261-7
                5069200
                27432154
                de8efa85-c09d-4dfa-9373-f802c7261a86
                © The Author(s) 2016

                Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License ( http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

                History
                : 16 March 2016
                : 9 July 2016
                Categories
                Review
                Custom metadata
                © The Author(s) 2016

                Emergency medicine & Trauma
                ilizarov method,bone regeneration,distraction,compression,external fixation

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