Traumatology and Orthopedics of RussiaTraumatology and Orthopedics of Russia2311-29052542-0933Vreden National Medical Research Center of Traumatology and Orthopedics73010.21823/2311-2905-2017-23-2-81-101EPIDEMIOLOGY OF PRIMARY HIP ARTHROPLASTY: REPORT FROM REGISTER OF VREDEN RUSSIAN RESEARCH INSTITUTE OF TRAUMATOLOGY AND ORTHOPEDICSShubnyakovI. I.<p class="MsoNormal"><span lang="EN-US">Igor I. Shubnyakov – Cand. Sci. (Med.), Chief Researcher.</span></p><p class="MsoNormal"><span lang="EN-US">8, ul. Akad. Baykova, St. Petersburg, 195427</span></p>shubnyakov@mail.ruTikhilovR. M.<p class="MsoNormal"><span lang="EN-US">Rashid M. Tikhilov – Dr. Sci. (Med.), Professor, Director RRITO; Professor NWSMU.</span></p><p class="MsoNormal"><span lang="EN-US">8, ul. Akad. Baykova, St. Petersburg, 195427; 41, Kirochnaya ul., St. Petersburg, 191015</span></p>fake@neicon.ruNikolaevN. S.<p class="MsoNormal"><span lang="EN-US">Nikolai S. Nikolaev – Dr. Sci. (Med.), Head Doctor.</span></p><p class="MsoNormal"><span lang="EN-US">33, ul. Fedora Gladkova, Cheboksary, 428020</span></p>fake@neicon.ruGrigorichevaL. G.<p class="MsoNormal"><span lang="EN-US">Lyudmila G. Grigoricheva – Cand. Sci. (Med.), Head Doctor.</span></p><p class="MsoNormal"><span lang="EN-US">1/3, ul. Lyapidevskogo, Barnaul, 656024</span></p>fake@neicon.ruOvsyankinA. V.<p class="MsoNormal"><span lang="EN-US">Anatolii V. Ovsyankin – Cand. Sci. (Med.), Head Doctor.</span></p><p class="MsoNormal"><span lang="EN-US">29, Pr. Stroiteley, Smolensk, 214019</span></p>fake@neicon.ruChernyA. Zh.<p class="MsoNormal"><span lang="EN-US">Andrey Zh. Cherny – Cand. Sci. (Med), Clinical Director RRITO; Associate Professor at the Department of Public Health, Economy and Health Care Management NWSMU.</span></p><p class="MsoNormal"><span lang="EN-US">8, ul. Akad. Baykova, St. Petersburg, 195427</span></p>fake@neicon.ruDrozdovaP. V.<p class="MsoNormal"><span lang="EN-US">Polina V. Drozdova – Cand. Sci. (Med), Esearcher of Hip Pathology Department.</span></p><p class="MsoNormal"><span lang="EN-US">8, ul. Akad. Baykova, St. Petersburg, 195427</span></p>fake@neicon.ruDenisovA. O.<p class="MsoNormal"><span lang="EN-US">Alexei O. Denisov – Cand. Sci. (Med), Academic Secretary, Head of Hip Pathology Department.</span></p><p class="MsoNormal"><span lang="EN-US">8, ul. Akad. Baykova, St. Petersburg, 195427</span></p>fake@neicon.ruVeberЕ. V.<p class="MsoNormal"><span lang="EN-US">Evgenii V. Veber – Assistant Researcher of Administration and guidance Department.</span></p><p class="MsoNormal"><span lang="EN-US">8, ul. Akad. Baykova, St. Petersburg, 195427</span></p>fake@neicon.ruKuz’minaI. V.<p class="MsoNormal"><span lang="EN-US">Iliya V. Kuz’mina – Student of the 4th year of the Faculty of Mathematics and Mechanics.</span></p><p class="MsoNormal"><span lang="EN-US">7-9, Universitetskaya nab., St. Petersburg, 199034</span></p>fake@neicon.ruVreden Russian Research Institute of Traumatology and OrthopedicsMechnikov North-Western State Medical UniversityFederal Center of Traumatology, Orthopedics and EndoprostheticsSt. Petersburg State University01072017232811010107201701072017Copyright © ,<p>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.</p><p>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.</p><p>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.</p><p>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.</p>hip osteoarthritistotal hip arthroplastyhemiarthroplasty hiparthroplasty registerкоксартрозтотальное эндопротезирование тазобедренного суставаоднополюсное эндопротезирование тазобедренного суставарегистр эндопротезирования[1. Загородний Н.В., Ломтатидзе Е.Ш., Батыгин Г.Г. Регистры по эндопротезированию тазобедренного сустава. Вестник РУДН. Серия: Медицина. 2012;(3):66-71.][2. Кавалерский Г.М., Середа А.П., Мурылев В.Ю., Рукин Я.А., Гаврилов А.В., Архипов И.В., Ятченко А.М., Бычков И.Ю. 2D-планирование эндопротезирования тазобедренного сустава. Травматология и ортопедия][3. Кегги К.Дж., Хуо М.Ш., Заторски Л.И. Передний доступ к тотальному замещению тазобедренного сустава. Материалы VI съезда травматологов ортопедов СНГ. Ярославль, 1993. С. 432-446.][4. Фоломеева О.М., Галушко Е.А., Эрдес Гу Ш.Ф. Распространенность ревматических заболеваний в популяциях взрослого населения России и США. Научно-практическая ревматология. 2008;(4):4-13. DOI:10.14412/1995-4484-2008-529.][5. Dreinhöfer K.E., Dieppe P., Stürmer T., Gröber-Grätz D., Flören M., Günther K.P., Puhl W., Brenner H. Indications for total hip replacement: comparison of assessments of orthopaedic surgeons and referring physicians. Ann Rheum Dis. 2006;65(10):1346-1350.][6. Havelin L.I., Fenstad A.M., Salomonsson R. et al. The Nordic Arthroplasty Register Association: a unique collaboration between 3 national hip arthroplasty registries with 280,201 THRs. Acta Orthop. 2009;80(4):393-401.][7. Keeney J.A., Nunley R.M., Baca G.R., Clohisy J.C. Are younger patients undergoing THA appropriately characterized as active? Clin Orthop Relat Res. 2015;473(3):1083-1092. DOI: 10.1007/s11999-014-3952-8.][8. Kusswetter w. Introduction. Noncemented total hip replacement. International Symposium Tubingen. Stuttgart; N.Y., 1991. рр. 1-3.][9. Loder R.T., Skopelja E.N. The epidemiology and demographics of hip dysplasia. ISRN Orthop. 2011;2011:238607. DOI: 10.5402/2011/238607.][10. Morscher E., Schmassmann A. Failures of total hip arhtroplasty and probable incidence of revision surgery in the future. Arch Orthop Trauma Surg. 1983;101(2):137-143.][11. Ostendorf M., Johnell O., Malchau H., Dhert W.J., Schrijvers A.J., Verbout A.J. The epidemiology of total hip replacement in The Netherlands and Sweden: present status and future needs. Acta Orthop Scand. 2002;73(3):282-286.][12. Pivec R., Johnson A.J., Mears S.C., Mont M.A. Hip arthroplasty. Lancet. 2012;380(9855):1768-1777. DOI: 10.1016/S0140-6736(12)60607-2.][13. Singh J.A., Schleck C., Harmsen S., Lewallen D. Clinically important improvement thresholds for Harris Hip Score and its ability to predict revision risk after primary total hip arthroplasty. BMC Musculoskelet Disord. 2016;17(1):256. DOI: 10.1186/s12891-016-1106-8.]