Saratov JOURNAL of Medical and Scientific Research

Norkin I.A.

Saratov State Medical University n.a. V I. Razumovsky, Director of Scientific and Research Institute of Traumatology, Orthopedics and Neurosurgery, Head of Department of Traumatology and Orthopedics, Professor, Doctor of Medical Science

Justification of intramedullary fixation devices modification and first clinical experience of application of the SarNIITO nails for femur shaft osteosynthesis

Year: 2019, volume 15 Issue: №1 Pages: 52-57
Heading: Traumatology and Orthopedics Article type: Original article
Authors: Barabash А.Р., Norkin I.A., Barabash Yu.A., Ivanov D.V., Zuev P.P., Shpinyak S.P.
Organization:
Summary:

Objective: to estimate the changes of effective stresses (by Mises) at three types of loads (axial, lateral and twisting) for various types of intramedullary nails synthesizing modeled fractures of A1; A3; B2 types at the level of femur bone middle third. Material and Methods. To solve the preclinical tasks computer simulation of biomechanical systems bone-fixing pin and method of finite elements were employed. Results. The nails developed by SarNIITO excel ChM and Fixion rods in stress-deformed condition, fatigue strength and stability of fixation of the examined types of fractures parameters of 12- 23%. Conclusion. The mechanical characteristics of SarNIITO nails proved to be of clinical use and may be recommended for patients with femur bone diaphysis fractures.

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The methods of deep periprosthetic infection diagnostics in the area of knee joint

Year: 2018, volume 14 Issue: №3 Pages: 607-610
Heading: Traumatology and Orthopedics Article type: Review
Authors: Shpinyak S.P., Babushkina I.V., Maksyushina T.D., Galashina E.A., Chibrikova Yu.A., Bondarenko A.S., Norkin I.A.
Organization: Saratov State Medical University
Summary:

The data on the methods and promising areas of investigations potent to improve diagnostic tactics in patients with infectious complications after total knee replacement is presented.

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The history of the development of national traumatology on the example of medical and scientific activities of Saratov Research Institute of Traumatology and Orthopedics (SarNIITO) (1950-1980)

Year: 2018, volume 14 Issue: №3 Pages: 596-602
Heading: Traumatology and Orthopedics Article type: Short message
Authors: Ulyanov V.Yu., Grishin S.E., Puchinyan D.M., Fedonnikov A.S., Chibrikov G.l., Norkin I.A., Ilyina E.S., Skobelkina A.V.
Organization: Saratov Socio-Economic Institute of G. V. Plekhanov Russian University of Economics
Summary:

We outlined and described basic directions of national traumatology development at the period of 1950-1980 illustrated by the example of Saratov traumatological school, estimated the contribution of SarNIITO traumatologists into this development at the abovementioned period, depicted syna — one of the founders of acute trauma clinics.

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The epidemiology of spine and spinal cord injuries

Year: 2018, volume 14 Issue: №3 Pages: 592-595
Heading: Traumatology and Orthopedics Article type: Review
Authors: Tolkachev V.S., Bazhanov S.P., Ulyanov V.Yu., Fedonnikov A.S., Ninel V.G., Salikhu Kh., Norkin I.A.
Organization: Saratov State Medical University
Summary:

The article contains domestic and foreign data reflecting epidemiological peculiarities of traumatic injuries of spine and spinal cord, their character and incidence among various population groups with respect to gender and age parameters. The study outlines spine and spinal cord injury structure with regard to modern classification schemes, introduces injury incidence data, specifies indexes of lethality in spine and spinal cord injuries.

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The aspects of minimally invasive surgery of forefoot static deformities

Year: 2018, volume 14 Issue: №3 Pages: 540-545
Heading: Traumatology and Orthopedics Article type: Review
Authors: Imamov A.M., Norkin I.A., Voskresenskiy O.Yu., Emkuzhev O.L., Muradaliev K.M., Zotkin V.V., Zubavlenko R.A.
Organization:
Summary:

The review illustrates various approaches to the potential of minimally invasive surgery in forefoot static deformities treatment. We demonstrated that methods aimed at the performance of nonlocking wedge osteotomy of first metatarsal bone and of proximal phalanx of big toe with preservation of cortex wedge contralateral to the base as well as of central metatarsal, extending tenotomies of flexors without tendon suture are the base for minimally invasive correction of forefoot static deformities providing orthopedically correct orientation of metatarsal heads under the early full postoperative load on the foot and preventing excessive dislocation of tendon ends.

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Professor I.Ya. Livshits and his contribution to the development of national neurosurgery

Summary:

The article traces the professional path of Professor Lev Yakovlevich Livshits, assesses his scientific contribution to the development of national neurosurgery. The concept of minimally invasive surgical treatment of trigeminal nerve neuralgia, developed by L. Ya. Livshits, allowed developing an original method of puncture surgical treatment of pain syndrome by directed hydrothermal destruction of the sensitive trigeminal root. The concept of "growing radicalism" created by Professor L. Ya. Livshits allowed his students elaborating algorithms for treating severe chronic pain syndromes of any localization and etiology.

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The estimation of biocompatibility of polycaprolactone matrices mineralized by vat-erite in subcutaneous implantation tests in white rats

Year: 2018, volume 14 Issue: №3 Pages: 451-456
Heading: Physiology and Pathophysiology Article type: Original article
Authors: Ivanov A.N., Kurtukova М.О., Kozadaev M.N., Tyapkina D.A., Kustodov S.V., Saveleva M.S., Bugaeva I.O., Parakhonsky B.V., Galashina E.A., Gladkova E.V., Norkin I.A.
Organization: Saratov National Research University n.a. N. G. Chernyshevsky
Summary:

Aim: to estimate biocompatibility of matrices produced from polycaprolactone (PCL) and mineralized by vaterite (CaC03) by studying local and systemic manifestations of inflammatory reaction in subcutaneous implantation tests in white rats. Material and Methods. The experiment was conducted on 40 rats divided into four equal groups: control, comparison (rats with imitation of implantation), negative control (rats with implanted non-biocompatible matrices) and experimental group, comprised of animals with implanted PCL/CaC03-matrices. Local inflammatory manifestations were analyzed by morphological assay of implantation area tissues. Systemic inflammatory manifestations were estimated by TNF-a concentration and interleukin-lp (IL-1) in blood serum by ELISA. Results. The changes in cellular population content demonstrate that a PCL/CaC03-matriceonthe21 day after the implantation to rats is evenly colonizing by fibroblast cells and vascularizing. This type of matrices does not provoke intense inflammatory reaction seen in negative control animals and accompanied by systemic manifestations such as statistically significant rise in TNF-a and IL-1 concentrations. Conclusion. The data obtained in the study proving the biocompatibility of PLC/CaC03-scaffolds experimentally substantiate the potential for their use in tissue engineering.

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Peculiarities of microcirculatory reactions after subcutaneous implantation of polycaprolactone matrices mineralized by vaterite

Year: 2018, volume 14 Issue: №1 Pages: 35-41
Heading: Physiology and Pathophysiology Article type: Original article
Authors: Norkin I.A., Ivanov A.N., Kurtukova M.O., Savelyeva M.S., Martyukova A.V., Gorin D.A., Parakhonsky B.V.
Organization: Saratov State Medical University, Saratov state university, Skolkovo Institute of Science and Technology
Summary:

The aim is to assess skin microcirculation changes arising during subcutaneous implantation of polycaprolactone scaffolds mineralized by vaterite. Material and Methods. The experiment was carried out on 30 albino rats divided into two groups: a negative control group and an experimental one. We implanted polycaprolactone scaffold with exhausted foreign protein subcutaneously into rats of the negative control group. We implanted polycaprolactone matrix mineralized by vaterite subcutaneously into the animals of the experimental group. Research methods include laser Doppler flowmetry and morphological examination of the tissues of the matrix implantation area. Results. Changes of skin microcirculation over the matrix allocation area correspond to the morphological pattern of tissue reactions. Biocompat-ibility disorders take the form of inflammation in the scaffold implantation area that is accompanied by stable perfusion rise associated with local bloodstream modulation changes. We did not observe inflammation signs in the surrounding scaffold tissues during implantation of polycaprolactone matrices mineralized by vaterite. Besides local microcircula-tory reactions possess a transient character disappearing completely by the 21st day after the implantation. Conclusion. Complex of the given functional and morphological studies allow us to ascertain high-grade biocompatibility of polycaprolactone matrices mineralized by vaterite thus giving rise to prospect of their use for tissue regeneration stimulation.

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Rehabilitation after hip and knee joints replacement: several results of medical and sociological monitoring

Year: 2017, volume 13 Issue: №4 Pages: 796-799
Heading: Health Service Organization Article type: Original article
Authors: Fedonnikov A.S., Andriyanova Е.А., Erugina M.V, Norkin I.A.
Organization: Saratov State Medical University
Summary:

Aim: research of rehabilitation process problem areas after hip and knee joints replacement. Material and Methods. Program of monitoring and evaluation of medical, organizational, social and psychological components of rehabilitation was developed. Sociological study of 1175 patients who have undergone in 2015-2016 total hip and knee joints replacement was conducted. Results. It was revealed an absence of real interaction between key parties of rehabilitation processes based on significant disproportion between high level (more than 80%) of patients' satisfaction of rehabilitation organizing and low activity of health managers (9.4%). Despite of declared patients' high rehabilitation quality permanent pain noted by 45% of respondents, move freely without additional support is available only for about 50% of patients. Conclusion. Rehabilitation management and its' quality are the key values for locomotor system functional recovery. Provided study has designated main problems of rehabilitation quality evaluation after hip and knee joints replacement.

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Medical and sociological issues of rehabilitation of patients after hip and knee joints replacement

Year: 2017, volume 13 Issue: №3 Pages: 761-764
Heading: Traumatology and Orthopedics Article type: Original article
Authors: Fedonnikov A.S., Erugina M.V., Andriyanova E.A., Norkin I.A.
Organization: Saratov State Medical University
Summary:

The aim: research of medical and social issues of rehabilitation after hip and knee joints replacement. Material and Methods. Sociological study of 1175 patients who have undergone in 2015-2016 total hip and knee joints replacement was conducted. Results. Within the scope of medical surveillance after the surgery 69.8% of patients made regular visits to orthopedic specialists after joint replacement, but only 9.4% of surveyed patients confirm the practice of active monitoring of rehabilitation on the part of health services. There had been determined a high level of declared patients satisfaction (more than 80%) with weak health managers activities argue considerable informational gap between the key parties of rehabilitation. Conclusion. Provided study has designated problem areas of patient and health system communication in rehabilitation after hip and knee joints replacement.

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