EPIDEMIOLOGY OF PRIMARY HIP ARTHROPLASTY: REPORT FROM REGISTER OF VREDEN RUSSIAN RESEARCH INSTITUTE OF TRAUMATOLOGY AND ORTHOPEDICS

• Main Authors: I. I. Shubnyakov, R. M. Tikhilov, N. S. Nikolaev, L. G. Grigoricheva, A. V. Ovsyankin, A. Zh. Cherny, P. V. Drozdova, A. O. Denisov, Е. V. Veber, I. V. Kuz’mina
• Format: Article
• Language: Russian
• Published: Vreden Russian Research Institute of Traumatology and Orthopedics 2017-07-01
• Series: Travmatologiâ i Ortopediâ Rossii
• Subjects: hip osteoarthritis; total hip arthroplasty; hemiarthroplasty hip; arthroplasty register
• Online Access: https://journal.rniito.org/jour/article/view/730
• ISSN: 2311-2905; 2542-0933

The   paper   presents   data   analysis   of  the   Hip   Arthroplasty  Register   of  Vreden   Russian   Research   Institute of Traumatology and Orthopedics, namely information on 37373 primary THA performed at the Vreden Institute and at several other orthopedic centers and 1200 hip replacements at other hospitals of St. Petersburg.There were 1.5 times more women in the studied cohort than men. A significant predominance of women with dysplastic osteoarthritis (72.4%) and rheumatoid arthritis (82.1%) was reported. A male predominance was noted in patients with secondary osteoarthritis (53.1%), post-traumatic changes of hip (61.0%) and osteonecrosis of the femoral head (68.6 %). The mean age of patients was 58.0±12.9 years (95% CI from 57.9 to 58.1, median 59 years). Age data of the study revealed that  patients were 10-12 years younger than reported in the national  arthroplasty registers of other countries.Total  hip arthroplasty was performed  in the  absolute  majority  of patients – 37295  cases (99,8%).  Uncemented implants  were used in 59.3% of cases, hybrid – in 29.6%, cemented – in 10.2%, reverse-hybrid – in 0.9% of all patients. The  most  common  bearing  used  was metal  on  crosslink  polyethylene, which  was applied  in 50.1% of all cases of arthroplasty. The  type  of fixation  of the  implant,  and  the  use of different  bearings  varied  in different  age groups. The paper presents  not only the absolute  numbers  of the data, but also demonstrated the dynamics  of the changes in time starting from 2007.The  present  epidemiological  study  does not  claim the  absolute  completeness of the  presented data,  but  contains the  analysis of the  large number  of cases, comparable  with  follow-ups  of patients in some national  registers  of certain European countries. The authors  analyzed about  10% of all cases of hip replacements performed  on the territory of the Russian Federation in ten-year  period.