Epidemiology of Primary Hip Arthroplasty: Report From Register of Vreden Russian Research Institute of Traumatology and Orthopedics

Abstract

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.

The Role of Spondyloarthrosis in the Structure of Pain After Hip Arthroplasty

“…У структурі ускладнень больовий синдром, що не пов'язаний з інфекцією чи нестабільністю компонентів ендопротеза, залишається серйозною проблемою через труднощі діагностики та лікування. За даними Шведського та Канадського реєстрів, у 17-20% хворих залишаються больові відчуття, а у 32-35% з'являється біль іншої локалізації або дискомфорт у ділянці кульшового суглоба протягом 10 років піс-ля ендопротезування [15]. Причиною залишкового болю може бути наявність у хворого спондилоартрозу поперекового відділу хребта.…”

Bone and Soft Tissues Integration in Porous Titanium Implants (Experimental Research)

“…введение эндопротезирование (эп) в последние десятилетия стало распространенным и эффективным методом лечения патологии тазобедренного (ТБс) и коленного (кс) суставов. по данным ведущих ортопедических центров, в настоящее время отмечается повсеместный рост количества операций по замене суставов [1][2][3]. однако увеличение числа первичных операций эндопротезирования неизбежно приводит к увеличению ревизионных операций.…”

Mid-Term Results of Large-Diameter Ceramic-Bearing Monoblock Acetabular Components in THA.

“…In Russia, CoC friction pairs are not widely used. According to Vreden research center, more than 98% of all implanted endoprostheses used in tribological applications contain polyethylene components [13] . Тhe rate of modern ceramic component destruction is less than 1 case per 5000 arthroplasties [14], [15], [16] .…”