Background. Since there is no national arthroplasty registry in the Russian Federation, the exact number of arthroplasty operations performed is unknown. Aim of the study to evaluate the epidemiology of primary, revision hip and knee arthroplasty and periprosthetic joint infection in Russian Federation. Materials and Methods. The inquires were made to 85 subjects, 73 federal state budget institutions and 30 private hospitals. Results. Answers were received from 76 subjects of Russian Federation, 41 federal and 18 private hospitals. The studied indicators revealed to be pretty much heterogenic. The decrease of operations number from 20% to 40% in subjects of Russian Federation due to SARS-CoV-2 pandemic forced us to make no analysis for these 2020 indicators in Russian Federation generally. 147 061 primary hip and knee arthroplasties were performed in 2019 in Russian Federaion. 7 770 revison hip and knee arthroplasties were done. 6 606 cases of severe orthopaedic implant-assosiated infection were cured including 4 282 cases post hip and knee arthroplasties that constitutes 2,91 % from primary arthroplasties. Conclusions. The frequency of periprosthetic joint infection in Russian Federation correlates to the world data. High complexity for patients routing with implant-assosiated infection and strong demand for Federal Center of implant-assosiated orthopaedic infection are revealed.

This publication is the official report describing all total hip arthroplasty procedures registered in the database from 01.01.2007 to 31.12.2020. During this period, 74762 operations were performed: 67019 (89.64%) primary and 7743 (10.36%) revision. The proportion of males and females underwent primary arthroplasty was 41.1% and 59.0%, respectively. The age of patients with primary arthroplasty was 57.8 years (95% CI from 57.7 to 57.9), with revision 59.3 years (95% CI from 59.0 to 59.6). The absolute number of primary hip arthroplasty procedures added into the database increased annually from 2007 to 2012. Since 2015, there has been a trend towards a decrease in the number of hip arthroplasty, due to the more intensive growth in the number of knee replacements performed. The number of revision hip arthroplasty operations varies from year to year with a clear tendency to increase, except 2020. The large proportion of revisions are accounted for by early revisions performed in the first years after primary hip arthroplasty, as well as early re-revisions. The main types of implants fixation on primary arthroplasty during the reporting period were cementless (50.89%) and hybrid (32.33%). In patients of older age groups, there is a significant decrease in the proportion of cementless fixation, while the proportion of hybrid, reverse hybrid and cemented structures is increasing. There are significant fluctuations in the ratio of different types of implants fixation in different years.

Prospective study of tranexamic acid use results (native preparation Tranexam) in primary total hip arthroplasty was performed during the period from March to October 2009. The study involved 159 patients (55 men, 104 women) with various hip joint pathology (79 patients - main group, 80 patients - control group). Mean age of patients made up 55.7 years (17 - 80 years). In patients from the main group 15 mg/kg Tranexam was injected just prior to operation with reinjection of the same dose in 6 hours. In control group etamsylate (750 mg 30 minutes prior to incision with reintroduction in 4 - 6 hours, daily dose up to 1500 mg) was applied. The results of the analysis showed reliable (p

Background. Conservative treatment options for hip dysplasia and hip dislocation in early childhood allow for good results in cases of a timely diagnosis. The preferred treatment option for patients with hip dislocation in adulthood is total hip joint replacement. The shortening osteotomy, proposed by T. Paavilainen, allows the surgeon to restore the difference in the lengths of the lower extremities during arthroplasty of the hip joint. However, according to the results of the Paavilainen technique, as presented by Russian orthopedic surgeons, the problem of nonunion of the greater trochanter fragment with the diaphysis of the femur remains unresolved, as evidenced by a massive group of clinical cases. Aim. The aim of this study was to identify factors affecting the consolidation of bone fragments after osteotomy of the greater trochanter, according to T. Paavilainen, during total hip arthroplasty and evaluate their significance after fixation with cerclage screws in comparison with a special trochanteric fork-plate. Materials and methods. The present study includes 208 cases that were treated at the Russian Scientific Research Institute of Traumatology and Orthopedics named after R.R. Vreden from 2003 to 2019 using various fixation techniques of the greater trochanter fragment. Patients were divided into two groups depending on their type of fixation. The quality of consolidation of a greater trochanter fragment with the femur was assessed during a follow-up period of six months or longer. The fragment of the greater trochanter was divided into the part that was not in contact with the diaphysis, or A, and the part that was in contact with the diaphysis, or B. We assessed the effect of the absolute value of the contact between fragments, the B/A ratio, the distance between the points of insertion of the screws into the diaphyseal part of the femur, the quality of the bone by the modified Barnet-Nordin index, and the history of previous surgical interventions on this joint on the consolidation. Results. When the part of the greater trochanter was in contact with the diaphysis of the femur (B) was less than 3.5 cm, the risk ratio of nonunion of the greater trochanter fragment with the diaphysis of the femur increased. Also, a significant factor is the index of the contact of the greater trochanter fragment (B/A less than 1) with the diaphysis of the femur using the T. Paavilainen technique. In addition, the presence of surgical intervention in the hip joint history significantly increases the relative risk (RR) of nonunion of the greater trochanter fragment with the diaphysis of the femur with this method of shortening osteotomy of the femur. Conclusion. In the absence of timely diagnosis and conservative treatment of children with hip dislocation, reconstructive-plastic techniques on the hip joint do not allow the achievement of proper results and increase the complexity of total hip arthroplasty. According to the results of this study, the absolute value of the contact between fragments (B), the index of the greater trochanter contact with the diaphysis of the femur, and the history of previous surgical intervention on this joint are objective tools for the prognostic assessment of the probability of fragment unions during total hip arthroplasty with the T. Paavilainen technique.